4.8 l v8
02-06-2007, 02:56 PM
#13
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I say since you have a the short stroke motor, stick the GM grand am cam in there:
http://www.sdpc2000.com/catalog/1981...g-Camshaft.htm
While you are at it, put in some katech rod bolts and let the thing fly!
Or you could do like others and swap in a 6.0L, but where is the originality in that?
http://www.sdpc2000.com/catalog/1981...g-Camshaft.htm
While you are at it, put in some katech rod bolts and let the thing fly!
Or you could do like others and swap in a 6.0L, but where is the originality in that?
02-06-2007, 05:12 PM
#14
Originally Posted by Keith
I say since you have a the short stroke motor, stick the GM grand am cam in there:
http://www.sdpc2000.com/catalog/1981...g-Camshaft.htm
While you are at it, put in some katech rod bolts and let the thing fly!
Or you could do like others and swap in a 6.0L, but where is the originality in that?
http://www.sdpc2000.com/catalog/1981...g-Camshaft.htm
While you are at it, put in some katech rod bolts and let the thing fly!
Or you could do like others and swap in a 6.0L, but where is the originality in that?
02-06-2007, 11:16 PM
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Originally Posted by RandomHero
Are you serious or was that a joke? Do you realize how huge of a cam that is. Many wouldn't put that in a 6.0 much less a 4.8L. He'd need like a 4k stall to make it worth while.
02-07-2007, 12:07 AM
#16
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Originally Posted by TXsilverado
which dyno did you go to?
Dyno sheet before 4:10's, Straight Pipe and Wheatley tune.
http://i110.photobucket.com/albums/n...tor/05GMC4.jpg
02-07-2007, 05:53 AM
#17
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Originally Posted by GMC_DUDE
I have the same setup, except I bought it new in 2003. I agree with most posters here. If you don't want to go FI, then a 6.0L would be the best choice. I went the Radix route and am pleased with it, but if my truck were to disappear, I would give serious thought to going the 6.0L route for its replacement. The only fly in the ointment could be: Although you say you are currently in Hawaii and are from Tennessee, I can't help noticing the "California" in your name. Correct me if I'm wrong but I believe CA disallows the installation of engines larger than what was available from the factory for that particular year, make and model. Apparently they do not currently check but they may some day in the future. However, you can get Radix, Whipple and I think STS setups that are officially CARB approved. Again it may not be a problem, just something to think about.
02-07-2007, 06:00 AM
#18
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[QUOTE=introligator]Comp Cam, LS6 Heads and Wheatley tune and I am making over 325 RWHP[/QUOTE
how is the 4:10 s on the highway. i either want 3:73 or 4:10, dont want to go to hight though.
how is the 4:10 s on the highway. i either want 3:73 or 4:10, dont want to go to hight though.
02-07-2007, 06:42 AM
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Originally Posted by introligator
Comp Cam, LS6 Heads and Wheatley tune and I am making over 325 RWHP
02-07-2007, 08:40 AM
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Originally Posted by nathancalifornia
whats the diff. between the ls6 heads and the stock 4.8l heads. does the ls6 heads have a biger bore, or port than the 4.8l. i could go and have mine machined. would that be just as good as ls6 heads
First is the combustion chamber shape and size LS6 heads have 64.45cc & the 4.8/5.3 head sports 61.15cc …So given that if you use the LS6 head without milling them you will lose compression (not good) If you use them have your machine shop mill them .030” to .035”.
Secondly and most importantly the lS6 head will out flow the 4.8/5.3 head .
Don’t spend too much money building up a set of lS6 heads…
Here is the mistake I made:
New 05 GTO heads $500
Comp Valve $300
Milling & ccing $200
Raduis under seat area $200
Patrriot Performance sprgs & ret $285
Total $1485.00
After spending that much money I could had saved just a little more and had a nice set of after market CNC heads