Port/polish guinea pigs, flowbenched, guaranteed increased CFM

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12-28-2002, 09:52 AM

#21

NiceGuy

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By the way, what's the compression ratio on these motors?

Would anyone be interested in having increased CR? The combustion chamber could be altered for a bit more hp. I'd have to follow up on it, though.

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12-28-2002, 08:13 PM

#22

raceboy

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Quote:

Originally posted by NiceGuy
The heads on my Camaro were the best (stock) flowing heads ever made. The LS1 motor was equipped with cathedral-type intake ports that were so ahead of their time, nobody thought they would benefit.

Now, a simple LS1 motor can put 481 whp to the wheels with just exhaust, lid (intake), and a mild cam. Why do you think everyone with a LS1 motor goes "heads and cam"? Because they can easily put 550+ to the wheels with a simple cam and port work.

I'm making a very educated guess that the heads on the Z need a LOT of work.

Once again since you choose to ignore me; you promised the world once before. You swore you would offer proof and pics on the VQ35 Altima you did. I asked repeatedly and then you disappeared. Now you are back and that's cool, but still no proof from your supposed previous hard to believe gains.

I am no LS1 expert so I looked them up and found quite a bit of dyno charts and real great info. For anyone really interested read the first link below. Now from the dyno's I saw, most LS1 with a few bolt on's (intake, exhaust) were putting about 325hp to the wheels on average. In the link below, an LS1 with nearly everything you can do to it dyno'd at 405hp, a far cry from your claims. You are asking us to believe that you can get 481rwhp with just the cam over the bolt ons? That is a near 50% increase. I simply don't believe it. To get a 50% increase you need to flow 50% more air and fuel without any other internal mods. There is simply no way. You can't cheat physics my friend. Then you go on to make a further claim of 550+rwhp with cams and headwork? That is a 70% increase!!! I simply have to call B.S. on that one.

http://www.idavette.net/hib/ls1c.html Read the part about the heads

http://ls1.fbody.com/dynos.html

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12-29-2002, 11:47 AM

#23

Jsears8

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Yeah, were are you coming up with these LS1 numbers? You must not be talking about stock displacement motors! My heads/cam ls1 puts out 445rwhp, stock displacement, and that is on the higher end of the average. What shop does your grandfather run? Is your camaro running 9s on motor?

Thanks,
Justin
1998 Trans Am H/C

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12-31-2002, 11:35 PM

#24

raceboy

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Once again, Niceguy can't be found.

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01-01-2003, 11:08 AM

#25

ppw350Z

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niceguy is avoiding raceboy

"raceboy" thank you for taking the time to make us all aware of niceguys short commings. this guy seems to be avoiding your questions! i saw you posted earlier in the thread when it was new. he avoided you then and is doing it now. i just wanted to say i'm greatful there are people like you on this forum, who help all of us out. i was actually considering sending my heads out until i spoke with a friend about it, my buddy raised the flag on this.