2 in kooks headers question

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Jan 24, 2015 | 01:51 PM

#41

dennis50nj

Race Director

Joined: Mar 2005

Posts: 11,549

Likes: 27

From: Southampton NJ

Quote:

Originally Posted by curtisb23

Rite I get that ,but I have been wanting to rev the car more because it kept making power from the old rmp limit ,if I can rev this car to 7k I'd have a nice power curve with the lil extra rpms

I would think if you have good valve springs and you rebuild the rockers since you have 60,000+ miles you can go to 7000 with no problem , mine is set at 7000 or 7100 i forget but it goes up as the trans gets hotter but my limiter is set at 7200 sometimes it hits the limiter then shifts, so far hasn't blown a lot of passes , i'm sure its pushing my luck

Jan 25, 2015 | 09:31 AM

#42

blown81bu

Safety Car

Joined: Aug 2007

Posts: 3,562

Likes: 233

Quote:

Originally Posted by winters97gt

I've got 2 inch headers on my C5 and they are not only a PITB but I know my car is down on power in the midrange running 27 pounds of boost. I'd run 1 7/8's for a blower car over 600-650rwhp all the way up to 1000-1100hp. Anything NA and I'd stick with the 1 3/4 like Dennis said.

thats why i would never go 2"..our cars on the street are rarely under boost and with lower comp i would think big headers kill it...i may try kooks 1 7/8 but if i hate them and dont make any more power up top under boost i will put the LGs right back on

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