LittleBoyBlu99

I ordered the Kooks Lt Stainless header with the hi flo cats & off road X pipe but can't decide on the 1 3/4 or 1 7/8 . MTi said the 1 7/8" would be fine with a small Tq lost and a slight Hp gain on top . Some guys on Corvette Forum that use these bad azz headers say go with the 1 3/4 with my H/C package if I don't plan to run some type of power adder in the future like S/C or Nos. What do you think!

Jagrmaister

I second some feedback. I, too, may soon be running heads and cam on a Z06 and am strongly considering the Kooks'.

travisnd

iTrader: (21)

I ordered QTP headers 1 3/4 b/c I dont plan on adding any power adders.

STRIPSTAR

iTrader: (4)

From what I have heard is that the 1 3/4 are the best unless you are big cube or power adder.

KJ

iTrader: (1)

1 3/4 is realy the best way to go, unless you plan to have BIG cubic inch, a power adder, or plan to turn the alot of RPM. 1 3/4 is a good all around primary & is not small at all! If any one has any questions on part #'s or pricing PM, or e-mail me...
kjones@sdpc2000.com

SouthFL.02.SS

What about stepped? That's an option.

LittleBoyBlu99

The 1 3/4" are looking better every day! Thanks guys !

UnbelievabLS1

iTrader: (5)

On an LS1, you'll lose no power by going to a 1-7/8" on stock cubes. Granted, there might be a lil torque lost, but you'll have the bigger headers when and if you ever decide to go bigger. Also, the stepped 1-3/4" to 1-7/8" are a great choice also for a stock cubed LS1.

Edge Hawk

Well, I have the Kooks 1 7/8".

I will have the dyno graph soon (they didn't have paper)

pre-headers
330 rwhp / 348 rwtq (330 was a spike, mostly 325-327) locked
dropped off after 5400
best 12.02 @ 111.12

headers
first good hooking day, 11.86@114.12 (also 11.88,11.90,11.93)

Then I strapped it on the dyno on tuesday.
335 rwhp / tq was about the same, but it was 335 from 5200-6000 AWESOME


I'll be going H&C soon, so that's why I went with 1 7/8"

LittleBoyBlu99

Nice times1

ZL1camaro

i would go with the 1 7/8 its not so much youll lose torque you will but youll make it farther up the rpm band and itll respond better to future upgrades.

LittleBoyBlu99

This choice gets harder by the day!