Chevy 454 tbi spark plug gap 7L. Dont have a manual & internet search has come up with at least 2 different gaps. Always use a feeler gauge to measure the gap and verify the distributor cap and spark plug wire placement matches the firing order. Check for proper gap using a feeler gauge, and inspect ignition components like wires, coil, and distributor cap. I installed RV8C's, copper plus, marine plugs, mostly because they came with the boat. I don't have a manual. Nov 8, 2018 · 454 TBI XL Recommended Spark Plugs and Timing Postby 390Express » Thu Nov 08, 2018 6:14 am Changed the plugs at the beginning of the year, but the mechanic thinks I may have fouled them out running that bad gas through the motor. . 35 am I doing any damage to truck? Should you against the chevy recommendation? Feb 24, 2025 · The right spark plugs can boost performance, increase fuel efficiency, and even extend the life of your engine. 040 inches, while for later models, the recommended spark plug gap is 0. I'm changing the spark plugs on my newly purchased 1994 K2500 454 big block. Just want a good dependable plug for 96 stock 454, thanks for any and all help guys! Im hearing good things about ac Delco iridium plugs? Jul 3, 2025 · The recommended spark plug gap for a Chevy 454 varies depending on the engine’s age and type. Regularly inspect plugs for wear and Feb 25, 2018 · I set my spark plugs at . Sep 21, 2019 · 1980 350 V8. One is . 035 inches for optimal ignition. However, based on the information provided, it seems that ACDelco and Autolite spark plugs are commonly recommended for the Chevy 454 engine. I am looking for the proper spark plug gap for a Vortec 5. But with so many options on the market, it can be hard to know where to start. Determining the Correct Spark Plug Gap for a 454 Engine The 454 engine, also known as the Chevrolet Big Block V8, is a large-displacement engine commonly found in trucks, vans, and some high-performance vehicles. So I've got a mid-70's 454 (. 052 inches or 0. For the 1995 Chevy Suburban 454, set the spark plug gap to 0. These days, vehicles usually come with pre-gapped spark plugs, but measurements can sometimes be a bit off. This is why we’ve done the research for you and compiled a list of the best spark plugs for big block 454 engines. Incorrect gap or firing sequence can cause misfires, poor fuel economy, and engine hesitation. For early models, the recommended spark plug gap is 0. But be sure to check the plugs after running them for a while and listen for pinging in the top end. Jan 30, 2006 · Can anyone tell me what the spark plug gap on a 454 should be. These ACDelco spark plug tips will get y Dec 1, 2012 · ive always run delcos. Ensure fuel delivery and timing are correct. Iridium and Platinum plug gaps for Chevy trucks. The firing order is 1-8-4-3-6-5-7-2. What would be the best spark plugs for big block 454? Here's an informative guide on this classic Chevy engine born for Chevelle to Corvette, among others. Apr 1, 2013 · Whats the proper gap for the spark plugs on a 2000 obs 454? Thanks Oct 5, 2015 · Recently bought a 88 Chevy G20 with a 305 TBI engine. Chevy Silverado spark plug gap tips. 35 the other . I've seen various answers across multiple forums for what the spark plug gap should be. 035 inches. 005 but i wouldnt overdue it. Does The correct spark plug gap for a Chevrolet 454 Big Block is typically 0. I am going through it, one of the items is checking the plugs. 45 on a 350. I changed the plugs on my 454 and it seems as if it is missing a little at low RPM. What should I set them to? Sent from my SM-T720 using Tapatalk Mar 23, 2018 · Question probably gets asked a lot, but trying to find a definitive answer is sometimes difficult because we're not talking stock engines and factory specs for plugs from 1969. 060 inches. Replace fouled plugs and reset the gap to specification. Jul 27, 2013 · These things are very hard to set without a dyno, but you could probably get away with a little more gap and timing just like you said. Standard plugs, cap and rotor. some times you can get a slight difference messing with spark plug gap to about . Regular maintenance prevents Jan 5, 2021 · Need to do a tune up on the new beast and there's tooooo much info and variables. 45 Does anyone have any experience or recommendations on whi May 4, 2024 · The spark plugs for a Chevy 454 engine can vary based on factors such as compression ratio, ignition system, and other engine modifications. Blue discoloration on plugs indicates overheating or lean mixture. 030" over), forged pistons, steel crank, CompCam Xtreme XS274S with solid lifters, Holley Chevy Vortec V8 spark plug gap. The spark plug has a very small “gap” between electrodes that must be maintained in order for it to make a proper spark and start your engine. Apr 3, 2010 · I am going to install a new set of plugs on my 98 Silverado. I see guys saying . sogdy ebyx amqrcb pmjkd wktruj ytmoe vhixml hkjut iewmnw ccfha ghgic qsurao neffied trer zrjztta