KOOKS NEW 2" RACE HEADER
#22
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Originally Posted by JDP
think the 2 inch would be a better choice than 1 7/8 on a 402 thats going to see a good amount of spray, or is it overkill on that small of a motor
#23
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It depends on what a good amount of spray is. LOL my car picked up from straight 1 7/8 to 1 7/8-2 " stepped. last year on the 400 shot. Im pretty sure these will pick up again. but if not i still have my stepped headers. But kooks have a great design and id bet as long as you have 400+ cubes and at least a 200 shot it will not hurt anything.
we put my headers on a 427 all motor car runs 10.0 @ 138 on the motor and it did not loose anywhere over the 1 7/8 straights so id bet add a 200 shot and theres enough exhaust need for the bigger tubes.
we put my headers on a 427 all motor car runs 10.0 @ 138 on the motor and it did not loose anywhere over the 1 7/8 straights so id bet add a 200 shot and theres enough exhaust need for the bigger tubes.
#24
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what about for n/a. I will have a 200 shot, but typically don't use it unless going to the track. Are 2" going to be overkill na on a dialy driver that occasionally goes to the track?
#25
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You'll need big cubes and alot of spray to back up a 2" header. I personally believe that a 2" would be a bit big in the 450 ci range N/A. I got the 1 7/8" stepped to 2" for my 454 n/a build. I'd stick with the stepped until it is a restriction just for the scavenging.
#27
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George,
Will Kooks have any offerings for headers purposed for the new Tall deck (GM-LSX and World Castings-Warhawk) blocks. What vehicle platforms will be produced first? Production timeframe estimates?
Will Kooks have any offerings for headers purposed for the new Tall deck (GM-LSX and World Castings-Warhawk) blocks. What vehicle platforms will be produced first? Production timeframe estimates?
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also interested for my 408(n/a currently, 200 shot later). its a daily driver and i know i need new LT's, i almost pulled the trigger on the 1-7/8" stepped to 2" set earlier this week and will now wait to hear some results of these especially for the smaller big cube motors.
#36
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Kooks 3" True Duals, Over Axle Exhaust
KOOKS provides top notch service at their facility to match their quality products.
Check out some of their custom work:
http://www.gmhightechperformance.com..._am/index.html
http://www.gmhightechperformance.com.../photo_03.html
..and one of the highest viewed posts in Generation III External Engine:
https://ls1tech.com/forums/generation-iii-external-engine/599926-kooks-3-true-duals-over-axle-exhaust.html
Check out some of their custom work:
http://www.gmhightechperformance.com..._am/index.html
http://www.gmhightechperformance.com.../photo_03.html
..and one of the highest viewed posts in Generation III External Engine:
https://ls1tech.com/forums/generation-iii-external-engine/599926-kooks-3-true-duals-over-axle-exhaust.html
#40
9 Second Club
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Well... I would say these headers work great!!
I picked up almost 2mph on my 370ci motor.
Check it out ....
https://ls1tech.com/forums/nitrous-oxide/815191-another-new-best-thanks-kooks-2-race-headers-another-broken-oil-pan.html
I picked up almost 2mph on my 370ci motor.
Check it out ....
https://ls1tech.com/forums/nitrous-oxide/815191-another-new-best-thanks-kooks-2-race-headers-another-broken-oil-pan.html