Bbc head 241

Bbc head 241. #8 · Jan 20, 2007. Aluminum fits MKIV "C-port" also sold as a "solid" head. The difference being the chamber shape! They are about 126cc if they haven't been milled. 285 posts · Joined 2018. Are these heavy, cast-iron, rectangle-port BBC heads still the hot setup Aluminum fits MKIV "C-port" also sold as a "solid" head. motortrend. These 781 heads for sale are meticulously crafted by Chevrolet, ensuring they exceed OEM specifications. Part Number BRODIX is happy to introduce its new line of Race-Rite 24° cylinder heads. PLEASE GIVE US YOUR CASTING NUMBER. The big-block Chevy’s canted valve heads are largely responsible for the tremendous power capability of the Rat motor and its continued popularity. 4L 454 engines. single plane and a tuned 3310-2 750 Holley, (just to kill a schosh off the lowend is all), and 1. 4:1 compression, "Old School" hydraulic roller, stock port 781 heads with 2. 761 lift intake . 96-up. Thinking starting with the "112cc" nominal chamber and shaving them to say 108cc or there about could be fun with short dome 454 pistonsIF they have good flow potential. 290s are closed chamber, 049s open chamber. VP Motor sports 109 fuel Great motor sitting in the shop as a back-up. 65@125mph 406 with home ported Dart 215 heads. On paper, the specs on the BBC heads supplied for the test certainly looked impressive. Johnny O. Tight clearances are KEY in the movement of the valves in the guid Oct 2, 2008 · These heads featured CNC porting through the intake, exhaust, and combustion chamber, and the power numbers reflected the extra work. With a little unshrouding, and maybe bigger valves, they will work very nicely. Oct 14, 2015 · I used an Open chamber,241 casting bbc head, similar to 049/781 only they have a 113 cc chamber as opposed to 119,with a small dome(. Nov 18, 2004 · Phil, your basic gasket for BBC is 4. 4. 10@118mph 9-30-22. 70 gears. Dec 4, 2021 · scott foxwell. rect . 350 and bigger valves on a 4. Some people think there are only "oval" or "rectangular" ports, and some people don't understand the deal with "open" vs. 00. 250 stroke)Dart Big "M" 4 Bolt Race Prepped Block w/Splayed Caps, GM iron square port heads, solid roller camshaft (286@. I just got my Brezinski set up in a decided to flow as many heads BBC heads as possible. Big Block Chevy Merlin III Cast Iron Cylinder Head. 9" Ford w/ 3. 5 or higher Sep 16, 2019 · 1968 to 1982 C3 Corvette Casting Numbers for Blocks, Heads, Intakes and Exhaust Manifolds. 050 intake/292@. Oval Port Intake with volume of 253 cc: Exhaust 114 cc. I also agree on keeping the 4. Your cam choice should work OK, but with 227/241 duration and 107 LSA, want to keep compression ratio up at 10. 020 steel shim head gasket. 002 and . 590/. They flowed well with bigger valves, bowl work. ProMaxx Performance Big Block Chevy Aluminum Cylinder Heads. 244 @ . Cut for 2. If you have a 71 402 you probably have 820 heads, decent Apr 27, 2004 · bbc head casting number 292. 280 bore and 3. Estimated to ship direct from manufacturer on 05/29/24, pending manufacturer availability. Mar 2, 2022 · Does anyone know if the Straub STR BBC288-300-9 (Straub Technologies) is the same cam as the Claysmith HR-8800-9-CSR (HR-8800-9-CSR BBC 454 to 470 CID “Old School” OEM 049/781 heads to a max of 5700 RPM)? Specs are almost identical except the lift on the intake side is 0. I had a set of 188's looked the same as the 990's, did not need both sets so I sold the 188's. Blended ports and bowls For the hot ones I usually use a solid roller cam around . The BRODIX Head Hunter series represents the cutting edge of conventional big block technology. 598 Comp solid flat cam,dual plane and 750 holley Apr 21, 2015 · 241 196 0. The BP RR-3 XTRA O is designed to be the ultimate 100% CNC ported street/pro-street head available on the market today. 95. Instead, you should focus on proper usage parameters. 1969 Chevelle Malibu. Oct 30, 2014 · The heads appear to be similar to 049 and 781 open chambers, and in the past I have had to clearance the head outside of the Exh valve to clear 2287 pistons- Is this still the best way to achieve ~10:1 on a small bore BBC with open chamber heads? Still seems rather crude to me. #11 · Jan 1, 2009. However small chambers also can cause flow issues around the valves. L-29 461 BBC 11. A 2. , cast-iron Merlin large ovals, CC 282S solid cam on 110/110, Holley Strip Dom. 6 318 192 342 274 0. Bowtie Aluminum Signature Series fits MKIV Gen. ratio up if you're using a flat top piston. Hand porting job at a decent shop out here = $300-400. Best suited for +540 cubic inch large displacement racing engines, operating at or below 7600 RPM. Note: for '51 through '54 Chrysler, DeSoto water pump conversions, see timing covers. Chances are you have carbon build up or its the inprint from the header gasket. 600 with Straub. The answer is its a toss up. 554"/0. Stock GM heads should have no problem. AFR 290cc heads. Add to Sep 22, 2017 · 1668 posts · Joined 2009. From the info I get they are the standard oval port heads. Apr 18, 2024 · By Max Matza,BBC News. These BB-Chevy heads come in an As-Cast series or Full CNC-Ported series. Strong mid-range torque, great for heavier vehicles. Howards has several in this range that are very easy on parts. VI "raised runners" 2nd design. 50 and larger bore. 66Vette guys. We ran the 706/862 Dec 30, 2003 · Mismatched BBC heads 820 and 241 Jump to Latest Follow 3K views 5 replies 3 participants last post by pdq67 Jan 14, 2004 BBC Heads. Jul 8, 2014 · The Assault head is basically the best import casting, there are several American head porting specialists using this casting for their "econo-port" offering. Best Time: TBD. 100" of valve lift flows 71/52 cfm. Are there any hydraulic or mechanical flat tappet grinds that people know work with the race rite's? I was looking at the Lunati voodoo 10110704 - 233/241 Duration at . SKU: 19776199 Categories: Big Block Chevy , Heads , Pro1 Jan 17, 2007 · 20786 posts · Joined 1999. Aug 30, 2021 · I know rollers are nice but after splurging on the heads I don't have a enough coin left over for a roller setup. Comp custom hyd. Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head. 8000+ RPM, 500+ cubic inches. Complete Cylinder Heads Guide for Big-Block Chevy Engines. I usually run them with 2. At $1,986. 3500 stall W/ 3. 0. GM heads are usually 65-66 lbs and Aftermarket are 75-80 lbs which is too heavy. . 766 Stroke Pistons are +31CC Heads are the 188 Castings Rect Port GM Iron 2. Factory crank crossdrilled, crank scraper and windage tray, factory rods with L19 bolts, and TRW L2399 pistons with a compression ratio of 9. Engine is out and apart as I Mar 30, 2018 · 4907 posts · Joined 2005. 050 . 88 exhaust Stainless fasteners and gaskets included. May 29, 2004 · i found a set of bb chevy 241 heads. "Good people sleep peacefully in their beds at night only because rough men stand ready to do violence on their Aug 19, 2007 · J. 880'' Exh Valves. Sort by See all Aluminum Cylinder Heads. Flow rate at 28 inches of water, 4. 050 ex . So over time these valve angles changed to allow better flow in small chambers. WHICH HEADMAKES MORE? We compared the four most popular stock LS heads in a back to back shootout. 27" tires (want to eventually go to a 275) (Parts on the wish list) Hydraulic roller cam (somewhere in the 234/242 @ . 454C10. . 125 32 Visit BBC News for up-to-the-minute news, breaking news, video, audio and feature stories. 572" Valve Lift. 75" four tube long headers! Nothing fancy and per D2k should put out something like 551hp at 5500rpm and 579t at 4500rpm. Jan 4, 2012 · The 3904390 are a 427 ci closed chamber heads, you have to use closed chamber pistons for a 4. 241 = $100-125. Though ProMaxx offered both smaller, as-cast and larger CNC-ported heads featuring 370cc intake runners, we opted for the middle of the three available Nov 16, 2011 · The engine is a 454 BBC (no overbore). 16@118mph 461 BBC 8:1 compression with junk peanut port heads RECTANGULAR PORT - Valve size 2. 84-96. Columbia University's head has defended her institution's efforts to tackle antisemitism to members of Congress Jan 13, 2004 · 12-1 compression 565 BBC Shafiroff short block(4. what is the purpose of this? does it hurt the heads, or help them? do they flow worth a ****? i can get them for $250 buck's, are they worth that? any info would be grateful considering Chevrolet Big Block Heads were offered in many different variations within their 51 years of production. GM 7. I took a pair of the 820's and did some bowl work, blended short side, installed 2. Haven’t seen much info on the 72 heads for builds. 2 compression 4. I flowed all of these on a 4. 50 @ 117mph. Suitable for towing, the Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head was used on 1996-2000 GM trucks/vans/SUVs with 7. #5 · Oct 5, 2015 (Edited) I have built many 049/781 heads for 496 type engines. 650 Assembled 4. My all steel 66 Chevelle runs consistent 11. 550 Assembled Dart PRO1 325cc Port Head: Street, racing, marine. 115cc. '67 Chevrolet Biscayne- SS427 L-36/TH400, '67 Hell Camino-BB 427/TH400 , '66 300 Deluxe 2 door-230/PG. These heads are 100% CNC ported and utilize features such as raised, oval-shaped intake ports that flow an amazing 489 cfm and up and newly designed exhaust ports that flow 335 cfm with only a 1. 88 Installed the Cam straight up as instructed Crane Rollers Melling HV77 pump Apr 29, 2005 · About 9. Also Apr 24, 2023 · It was time to dig into the internals and make some power the old-fashioned way with a cam swap on our junkyard 454 engine. If it's on a domed piston, c/r will likely be 10. Worth looking at. The motor was done by 5300 RPM, by 5500 RPM the power fell like a brick. Apr 25, 2009 · I chose these heads because I need the small combustion chambers to have some decent compression. 500". Mar 9, 2022 · 72 454 with 241 heads 500 hp build suggestions. 300'' Int/1. V Gen. Bowtie Aluminum MkIV "raised runners" 1st design. Aug 11, 2020 · Now this one is a bit more open, " GTA 280-294 in a stock headed 402 BBC" so a stock head, so maybe headers, intake compression etc to get to the dyno'ed 485Hp @ 5900RPM. The closed chambers will get the comp. 5:1 compression ratio. The cam is a Comp Cams 292H hydraulic flat tappet . 600 boreX4. cam and stock rocker arms 11. We ran a Mr Gasket . 244/. Those 858s are worth a small fortune BTW. 110 Degree Lobe Separation Angle. 72" exhaust (also flat steel) at 0. Oct 5, 2015 · 9732 posts · Joined 2002. Aug 25, 2020 · L-29 461 BBC 11. Yes, a small dome and small chamber is conducive to better flame travel. 680" valve lift. Re: Big Chev 269cc Merlin oval iron vs 049/781/241. 60 a pair, they are great upgrade. BBC Water Pump Adapters. Bowtie Aluminum MkIV "raw" casting of "861" MKIV 1st design The Low Down On BBC Heads. Our largest and best flowing 24° big block chevy cylinders heads, these cylinder heads feature 100% CNC machined intake runners, exhaust ports and combustion chambers. ekitch. No, the peanut ports are smaller, according to my info, the standard ports are the standard size and not the small peanut port heads. I flowed the exhaust without an exhaust pipe attached and I only flowed the long port (the better flowing one). High performance street, stock converter ok, best with 2000+ converter & gears, choppy/thumping idle. Hot Hemi Heads Early Hemi Parts for Chrysler, Dodge and DeSoto. 90@113 MPH. My 1970 SS454 LS6 SuperCar certified stock appearing 11. In my experience the bigger valve has always made more power. May 15, 2024 · The reigning champions will head into the final day of the season top on goal difference and in pole position to retain their crown for a fifth successive year. 1964 Chevelle 4 Door 3475 lbs. 671” / . 030 over 427 BBC currently @ 9. Here are the numbers enjoy. 37" diameter. Mar 10, 2021 · Just started taking the springs and stuff of my 990's today, they are a pretty good head out of the box but with a little cleaning up in bowl area and adding a 2. With these heads and a 246/252-. 10 sec. 060 over 454 bore is 4. 88 valves, Stealth intake and an 850 carb. #8 · Mar 12, 2013. 5:1. #8 · Sep 23, 2017. Aug 4, 2020 · Here’s a list of parts we used: 454 4-bolt main block with main studs. 050; . 01. They have custom designed a head to meet the demands of the Big Block Chevy world, while keeping the quality high and the price reasonable. Jan 29, 2010 · BBC head flow including the new AFR 290cc. Thumpr 227/241 Hydraulic Roller Cam for Chevrolet Big Block 396-454. 80. 050 range) Probably stick with a RPM intake. 3L HEADS vs 241, 799/243 vs 317s. 73 gears on a 275 drag radial. 290 & 049 heads have oval ports. rally wrote: Had a good pair of 049 BB Chevy Ovals reworked. Small 99cc combustion chambers allow the compression ratio to be raised one full point over most stock 119cc Dec 1, 2019 · 706 5. 25 stroke with the standard deck. 25" intake and 1. Weingartner Racing LLC. Most likely go with an 850 Holley. roller (237/241 @. Like. Mar 22, 2016 · I have the latter cam in my 433" BBC it's a Chris Straub design The engine is 4 Bolt Block with Forged Crank, Rods, Pistons about 10. A . i don't know anything about these heads accept they are oval port heads that has been port matched to a square port intake. 400 lift when the 049 head will flow better at higher lifts because of less valve shrouding. 496 /th400/ford 9", 3. CNC porting from patriot = $600. 54" bore. #4 · Oct 16, 2018. 5/1 or higher. 7 results. by SupStk » Tue Feb 28, 2017 3:25 pm. PORT 335cc ALUMINUM HEADS BARE SET/PAIR. Bare Head, Sold Individually. 280 Bore x 3. 850 exhaust valve. 65 328 197 345 280 See All 15 Photos. We ran a 408 BBC 781's with manley under cut stems stock size, in a 64 Chevelle 3550lbs 11. 4 246 166 298 236 0. BBC PRO1 24° 325cc Cylinder Head – 1. "closed" chamber heads. Oct 16, 2018 · bracketchev1221. BBC PRO1 20° 451cc CNC Cylinder Head – 1. 15. When you are assembling an engine, one of the worst things you can do is focus on “less expensive” parts. 68 et. 31, so you still have room, just be sure it is OK for the heads. These 049 have the best exhaust port size. $522. Have done a lot of reading on the site and was looking for some old posts I’d read years ago where I believe kettbo and mr 4 speed gave some build ideas to folks but can’t seem to find what I was looking for. The original head design is often referred to as having a 26-degree valve angle, although this intake valve angle of inclination is only 385cc BBC Rectangle Port Cylinder Head. 19 1. 4L 454ci V8 Big Block - 781 Cylinder Head, a superior upgrade for your classic Chevy engine. They both flow similar numbers until . Available $829. A proper valve job, some fairly easy work with a grinder below the valves (after lots of research) can make the heads flow more than your 402 can reasonably use. 8 to 1 CR. 119cc Combustion Chambers. This article, taken from the book by Ed Dec 1, 2016 · After looking at the results of this test, the gang at ProMaxx might just have pulled off the hat trick. 19 intake valves are installed. This is an older thread, you may not receive a response, and could be reviving an old thread. what is the purpose of this? does it hurt the heads, or help them? do they flow worth anything? i can get them for $250 buck's, are they worth that? any info would be grateful May 29, 2004 · i found a set of bb chevy 241 heads. 4 BBC OHV 454 V8 CAST IRON CYLINDER HEAD. 050 Hyd Roller cam and dynoed 550ish HP?, just remembered he used Brodix Race Rite heads, OEM iron heads need what a 10* split between Int & Exh. Ports should be square. Stock Chevy casting number 3993820. he 292 head is very similar to the 781 and 049 head. 600 Bore Chamber Maximum competition, high torque, high compression – low dome. 105cc. The 565 is a nice combination. The 781 are open chamber head so you naturally would use an open chambered piston with the same bore and stroke because of the 396 crankshaft. I am at a little over 10. #5 · Dec 5, 2021. Yes the Merlin oval heads are nice. Oct 6, 2022 · L-29 461 BBC 11. I use a 2. 320cc Rectangular Intake Ports. Chamber Volume 113 cc. 243 = $400-500. 1579 posts · Joined 1998. Most port jobs will flow between 280-300cfm. ProMaxx heads have started a revolution in the performance world. 16142 posts · Joined 2010. 19 intake, 1. GM Production of the Chevy Big Block engine began in 1958 with the Mark I W Series and ended with the Gen VII in 2009. 918-520-3480. These new 24° heads are available in an oval or rectangular port. « on: January 29, 2008, 04:15:25 PM ». Our 781 big block Chevy heads are a perfect fit for your 7. years 1970 to 2000. Only the Edelbrock and AFR heads allowed the 468 to exceed 600 hp, as the Edelbrock-headed BBC produced 601 hp and 552 lb-ft of torque. 050". www. Forged crank and connecting rods (ARP rod bolts) Thumpr Nitrided 235/249 Hydraulic Flat Cam for Chevrolet Big Block 396-454. There seems to be some confusion about the different head types used on Chevy Rat motors. BBC News provides trusted World and UK news as well as local and regional perspectives. Find 1972 CHEVROLET CORVETTE Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Hex Head, Stock Style, Chevrolet, BBC, Kit. The next size up "off the shelf" gasket appears to be 4. 676” lift / 106 LSA) L2465-F Pistons, deck clearance between . Dec 1, 2008 · They will cost you $300-400 less, leaving that for the porting which will make them damned near even in terms of flow. 2. Bowtie Aluminum MkIV "raw" casting of "861" MKIV 1st design Apr 21, 2015 · 241 196 0. to make the heads perform best? Dec 22, 2022 · 68 Chevelle, All steel w/ full interior. 1 compression, mild cam 496. <7,000 RPM, <500ci. The only thing I'd do is maybe have the chambers softened depending on how much nitrous you're going to use. That is the one I use now, because my block is . Learn More. 0 to 1 if I recall correctly. 468 10. The precision designed 298 cc intake port flows well in the 390 cc range. 19/1. Introducing the Remanufactured 73-84 Chevy 7. $ 46. May 30, 2013 · Doing the valve guides correctly is the most important thing in the life of the valve job. However, in the aftermarket production of heads, blocks or complete engines continue till this day. 5 287 188 332 260 0. 310 bore and no exhaust pipe attached. Dec 29, 2020 · No dyno time but ET results. Jan 17, 2007 · 20786 posts · Joined 1999. Jan 25, 2023 · Didn't 65Cayne build a similar 460 using a Clay Smith/Straub 229/241 @ . Get all the latest news, live updates and content about the World from across the BBC. The BB3 cnc 366 is a good head with a really nice port. 06 Flat steel Intake, 1. 88" exhaust valves. #2 · Aug 19, 2007. com. Watch: Columbia University president answers on antisemitism. 290's are a 1970 casting. Jim. BBC CHEVY 496 540 572 BRAVO 335 REC. Description. 005; 10. 707 exhaust 109 LSA),Brodix single plane intake for a 4500 carb, Holley 1050 cfm dominator model # 9375, 2 inch primary Hooker super comp headers with 12 inch collector . 16@118mph 461 BBC 8:1 compression with junk peanut port heads Get all the latest news, live updates and content about the World from across the BBC. chevrolet suburban caprice impala truck. Jan 18, 2018 · These cylinder heads deliver great throttle response and power from 1,500 to 6,500 rpm. P/N 20701. Eric Weingartner. Get them looking nice and maybe you can fetch enough to buy some real race stuff. 590 with the Claysmith and 0. 8 to 1. May 2, 2010 · fyi, I had a big set of valves put in a set of 802's and got it to flow about 255 intake/199 exhaust at 0. Vortec 062's 406 w/hyd. Sep 25, 2020 · If the 292's are similar to the 820's, I'll vouch that they can make respectable power. Mar 6, 2013 · The only competitive advantage an aftermarket head would have on you is raised exhaust ports to flow a little better as the BBC is flow restricted on the exhaust side. 350 is as big as you can go with standard valve spacing without shrinking the exhaust valve. This is especially true when 2. 125" overbore. Posted on September 16, 2019 September 16, 2019 by Dino Behler Jr. TH350. I think the cam they used in this article, XM284HR, would have been a much better choice than what the OP picked. 760 stroke. 250) closed chamber piston,my compression was close to 10-1,you definitely want to go with the bigger valves and clean up the water jackets and do some bowl work/gasket match. Dec 30, 2009 · OK, anyone have any comments on the flow/performance differences between the 820 open chamber oval heads compared to the 049 and 781 heads? Thinking the runners are approximately the same size. 550/. really get a hardon for 858s - I see them sell junk for 1500. Reply Like. $1,123. #2 · Mar 30, 2018. FITS casting numbers 360 045 236 156 241 279 313 and 391 (last 3 digits). Nov 14, 2013 · Matthew, The STOCK BBC heads are a solid foundation. 125" fixture. TC Member # 4431. Dec 31, 2008 · 10470 posts · Joined 2006. 4L V8 engine from 1973 to 1984. 14044861. #10 · May 6, 2023. Are these heavy, cast-iron, rectangle-port BBC heads still the hot setup Mar 12, 2013 · 129 posts · Joined 2010. View Details. 25 intake valve the 990's become a great head. 10@118mph 9-30-22 10. 5 in the hole. Good as any other GM head. 11645 posts · Joined 2005. 88 valves, hardened exhaust seats and made 528 HP 566 TQ on a 9. 00 a pair. The new HH X offers a redesigned Nov 28, 2010 · I have flowed plenty of factory big block chevy heads, so here it goes. Lots of the heads out there are too big for a less-than-serious engine. 550. si dz et kl md hk nd ny lv ni