Mikee Gaga

i have finally decided on getting kooks headers for my SS, but have noticed that both the 1 and 3/4 and 1 and 7/8 headers are the same price...

somebody told me that by going w/ the bigger headers i would be losin upwards of 7-10 horsepower on a stock motor... i dont really understand why...

bigger displacement or nitrous or forced induction may be in my future, and i would like to only do this header install once, so i would really like the 1 7/8 headers...

is what he is saying true about the horsepower loss on a relatively stock motor?? i know we want "some" backpressure but would it actually hurt to have bigger headers??

thanks in advance for any feedback, i would really like to order these by the end of the week and this is the only thing stopping me...

Nasty N8

iTrader: (33)

Yes unless you have more cubes or more air flow than stick with 1 3/4" You won`t see any gain with bigger tubes, no back pressure. You will have them out again if you plan on more cubes anyway. Let us know if you have anymore questions or if we can help on the header order.

Nate

CamaroSS_2002

iTrader: (4)

I have basically the same issue. Which would be better for a procharger on a my current setup. 3/4 or 7/8?

Mikee Gaga

thanks for the feedback...

the only thing that gets me is that they are the same price... and down the road i will always be kicking myself for not gettin the 1 7/8's..

2000ws6transam

iTrader: (5)

i read in a lingefelter book unless your running 500-550+ plus h.p. they are a waste!

redz_02

iTrader: (4)

yeah, it usualy runs by hp, same with injector sizes. Stick with the 1 3/4, they are kooks and probably stainless, so if you want to go bigger later you can always sell them. The bigger primaries might loose some low end torque.

guadofreak

iTrader: (1)

I gained 20hp from my 1-7/8 headers on the STOCK motor...

Get what you want. Some people only speak what they hear. I was soo happy to prove EVERYONE wrong when the first set of 1-7/8 LT's was produced by grottyohan.

I also gained TQ through the ENTIRE powerband...

Nickn20

boost get the 1-7/8s

LS1x2

iTrader: (11)

Yea, I HEAR that you need big cubes to make use of the 1 7/8". I'd really like to see some dyno numbers.

Mikee Gaga

im not really worried about "not making use" of the 1 7/8 since they are the same price... i think im just going to go ahead and get them... i like to do things once and for all, and even if im losing 5-7 horsepower for now that is ok w/ me provided that once the heads/cam goes in I will reap the benefits...

thanks for all the feedback fellas...

Y2K2LS1

Was that 20 hp gain over the 1 3/4 grotts??



What would you guys say about the gains from a 1 7/8 on a big cam car, like the G5X2? And Heads? Still keeping the shortblock stock though.

Mikee Gaga

I just talked to the boys at East Side, they assured me that no top end would be lost, but some low end torque would be lost (which i expected)...

so i think im just gonna go w/ the 1 7/8 coated stepped headers....

i cant wait to hear those headers w/ high flow cats and magnaflow at WOT!!!

Y2K2LS1

FYI..

I believe that Kooks is a FULL 1 7/8 header not a 1 3/4 stepped up to 1 7/8 like others.

98 LPE SS

It sounds pretty mean

98 LPE SS

They actually offer both depending on what you want.

07BlueDevilZ06

iTrader: (8)

for those that dont know kooks makes 2 stepped headers 1 3/4-1 7/8 and 1 7/8-2 inch im going for the big ones on my personal car

O so was all the info we gave you helpfull Mike? you going to eastside for your headers ? there a good bunch of guys up there at eastside.

Matt @ TT Performance

George you've confused me.. lol...

From what I hear, East Side is a good group of guys.

- Matt

guadofreak

iTrader: (1)

20hp w/o LS1edit tuning from the stock manifolds to the 1-7/8 grotts.

StevieZ

iTrader: (3)

That's not really impressive but then your car's tuning is probably totally out of whack.