Which Heads and Cam
Pro
Joined: Jan 2005
Posts: 559
Likes: 1
From: Lenexa Kansas
You sure can, but not if you are really picky about your idle and lope... 
There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
Supporting Tuner
Joined: Mar 2006
Posts: 1,311
Likes: 0
From: Houston TX
Cruise-In VIII Veteran
St. Jude Donor '06-'07
You sure can, but not if you are really picky about your idle and lope... There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
Brian whimped out though. Shoulda gone with a G5X3.
Sissy....
Retired Admin
Joined: Apr 2002
Posts: 46,405
Likes: 34
Founder St. Jude Fundraiser
You sure can, but not if you are really picky about your idle and lope... There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
There are lots of guys getting that kind of rwhp through stock heads. I imagine it will typically take a cam in the 230's. Like LG's G5X2. Cobra4B has that cam on his Z06 and he's hitting 436whp through stock heads. The G5X2 is a 232/240 .595/.608 on a 112 or 114.
Race Director
Joined: Aug 2004
Posts: 14,639
Likes: 39
From: Winston-Salem North Carolina
St. Jude Donor '08-'09
My car is his older brother, without the fast 90. ECS cam only, stock untouched ls6 heads. Ask for the George Z Cam. 430 rwhp, a 70 rwhp gain.
Last edited by GeorgeZNJ; Oct 19, 2007 at 08:18 PM.
Racer
Joined: Jun 2007
Posts: 468
Likes: 15
From: Jupiter FL
Well I am kind of jumping in on this thread but I have been thinking about the same thing.
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
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Instructor
Joined: Jun 2006
Posts: 215
Likes: 0
From: Houston Texas
Well I am kind of jumping in on this thread but I have been thinking about the same thing.
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
So 420 can be done with a mild cam and headers
Safety Car
Joined: Sep 2005
Posts: 4,501
Likes: 1
From: TAMPA BAY FL.
A head and cam swap can be done with the engine in the car, just need to remove the radiator, water pump, steering rack and alternator to make room. Its not bad at all LS1howto.com has a great write-up, I just finished mine with ported ls6 heads and the G5X3, LG Pro headers and 25% pulley and made 450/411.
So 420 can be done with a mild cam and headers
So 420 can be done with a mild cam and headers
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Give us a call: 813-628-0080 and JP can go over all the options, pro's/con's, etc. We have some specials going on now that you can get in on. You can also test drive a car or 2 here with heads/cam to see if it is what you want.
Cruising
Joined: Oct 2007
Posts: 13
Likes: 0
From: Edmond Oklahoma
Well I am kind of jumping in on this thread but I have been thinking about the same thing.
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
My goal is 425 RWHP,Because my 03Cobra made 448rwhp and was heaver so at 425 things should be equal.
I have an 00FRC. Could I make my hp goal with stock heads, aftermarket cam, headers Xpipe decent cat backs, and I guess an ls6 intake.
Then next question. Can the cam be installed with the engine in the car?
And you guys getting high HP from stock heads are the heads ported etc?
you could prolly have 395rwhp or so and it would be pretty good race against an 03 cobra with 445rwhp.
Instructor
Joined: Jun 2006
Posts: 215
Likes: 0
From: Houston Texas
For my complete setup and dyno graph http://forums.corvetteforum.com/show....php?t=1841461 I highly recommend this cam, or maybe the X2 if its to much
Good luck with your setup
Pro
Joined: Jan 2005
Posts: 559
Likes: 1
From: Lenexa Kansas
if you make 425rwhp compared to 445rwhp in an 03 cobra, the corvette will pull the crap out of the cobra. the corvettes are like minimum 500lbs lighter. my friends 03 cobra weighed 3700+lbs. hardtop/6speed. and 445rwhp is around what my friends made as well.
you could prolly have 395rwhp or so and it would be pretty good race against an 03 cobra with 445rwhp.
you could prolly have 395rwhp or so and it would be pretty good race against an 03 cobra with 445rwhp.
110%I was just at the track with my 410whp 99 FRC, and I was pulling the same 1/4 time, but 7mph faster than a 440whp '03 Cobra with DR's. He was running 12.40's at 110mph. MPH seems a little slow to me... I'm a little skeptical of his whp #'s, but he said it was pullied with a full exhaust, which my experience says should be making at least 440.
At 410whp, I have 7.68#'s/hp. At 475whp, an '03 Cobra would have 7.71#'s/hp. The weight of the Vette is such a BEAUTIFUL thing!
Edit: P.S. I only got one run in with this car ever, so no badmouthing my wussy 12.40 @ 117.4. I know she has a lot faster time waiting in there; I bogged the crap out of the launch.
Racer
Joined: Jun 2007
Posts: 468
Likes: 15
From: Jupiter FL
A head and cam swap can be done with the engine in the car, just need to remove the radiator, water pump, steering rack and alternator to make room. Its not bad at all LS1howto.com has a great write-up, I just finished mine with ported ls6 heads and the G5X3, LG Pro headers and 25% pulley and made 450/411.
So 420 can be done with a mild cam and headers
So 420 can be done with a mild cam and headers
Seems the work to pull the engine is not much more work. So I was thinking maybe I would pull the engine and swap for a crate motor or a locally built ls1.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Thanks,Matt
Last edited by madmatt9471; Oct 28, 2007 at 06:16 PM. Reason: add sound clip
