So its a 1974 chevy shortbox 4x4 I had a 402 in it prety much stock til we pulled it the other day and found 1 broken piston and 1 or 2 pistons w/ broken rings...we were gona rebild it til today my dad herd of a 70's pickup with a 454 so i mite go take a look at that soon and maybe put it in my '74...if that 454 just has regular exhaust manifolds should i use them or my headers??
Lots of variables, around town just crooozin you probably wouldn't notice anything except maybe the sound. Headers, and I mean GOOD long tube headers really make a difference performance wise at higher RPM. In a dyno application I've read where headers make as much as 30 or more HP......but again that's at higher rpm.
Take the time to use wire looms and separators to keep the wires neat and tidy and away from headers. If the wires get close to a header pipe the put heat socks over the ends of the wires.
In 1970, GM pushed the performance bar higher with the introduction of the Chevy 454 V8. Unlike the popular Chevy 427 that was used in a wide variety of automobiles, the 454 was used only in high performance cars like the Chevy Camaro, Corvette and Chevelle. There were 3 different variations of the 454 that came onto the drawing board at GM during the 70s; the LS5, the LS6, and the LS7 which was designed but not produced for the general public most likely due to the massive smog restrictions that started lurking about in the early 70s. . Although the LS7 454 never made its way into any cars sold to the public, it was sold as a crate engine available through Chevrolet and claimed to produce around 500 horsepower.
Also used in vans ,pickup ,surburburban ,& motorhomes ,boats and other vehicles , also ls1 ls2 ls3 rated as low as 155 hp ..never saw 454 Factory in a Camaro.
Its a breath of fresh air to see a young man on here that actually puts his age down :thumbup: And is willing to learn!!!!!! I'd like to shake your hand young man:thumbup: But a hardy welcome :welcome: Is owed you!!
In case you read by my edit!! the 396 was actually only put in 68 and 69 trucks, after 1969 they didn't make any more 396 big blocks, they were all 402s marketed as 400s in trucks and 396s in cars!
cheyboy97, I think that the light trucks had the 402 in them until 1972. In 1973 the light trucks were offered with 454 ci engines. These gen IV 454 engines have been in trucks until 1990. In 1991-1995 the Gen V 454 was used and in 1996 the Gen VI came out. Doesn't matter whether it was a Chevy or GMC.
chevyboy97, If you want to try a set of headers check these from Summit Racing. In case you don't like them the price isn't that bad. $129.95 1974 CHEVROLET C10 PICKUP Summit Racing® Headers SUM-G9011 - SummitRacing.com. The Hooker headers are 1 7/8" tubing but are $469.95 1974 CHEVROLET C10 PICKUP Hooker Super Competition Headers 2826HKR - SummitRacing.com. Compare both sets of headers I believe I would buy the Summit Racing headers. Whatever set you buy I would get some VHT Ceramic paint silver or black. If you have a way to sand blast them before painting would work better. After painting heat the headers with a propane torch. Don't put the flame directly on them about 6" away. If some paint pops off spray it again while hot. I know Advance Auto and Oriley's carry the VHT Ceramic paint. Flat black SP102 and flat silver SP106. If you know somebody that has a oven to bake them in would be super.
chevyboy97, If you want to try a set of headers check these from Summit Racing. In case you don't like them the price isn't that bad. $129.95 1974 CHEVROLET C10 PICKUP Summit Racing® Headers SUM-G9011 - SummitRacing.com. The Hooker headers are 1 7/8" tubing but are $469.95 1974 CHEVROLET C10 PICKUP Hooker Super Competition Headers 2826HKR - SummitRacing.com. Compare both sets of headers I believe I would buy the Summit Racing headers. Whatever set you buy I would get some VHT Ceramic paint silver or black. If you have a way to sand blast them before painting would work better. After painting heat the headers with a propane torch. Don't put the flame directly on them about 6" away. If some paint pops off spray it again while hot. I know Advance Auto and Oriley's carry the VHT Ceramic paint. Flat black SP102 and flat silver SP106. If you know somebody that has a oven to bake them in would be super.
mine are Hooker headers not sure about the size tho
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