well guys i just did a H/C swap on my 99 trans am that has over 75k on the clock.. Guess my question is what is a lot of miles for this motor?
i have been pretty hard on it since i have owned it but didnt do a single mod to it till feb of this year.... Now i have a set of 6.0ltr heads GTP 220 cam (had it laying around) FLP long tubes ford 9" LS6 intake... It feels like the swap really gave it a kick in the pants almost like it ran on the 100 shot of gas... but i still dont pull on people like i think i should... any ideas? What makes some just GO like mad and other just seem normal... A friend of mine just did a dyno of his 02 Z with only a lid and FLP long tubes with open Y and he pulled 350/360 and he had some issues at the time????

 

There are a lot of factors in your question:

Head Porter - Who did your heads
Cam - I bet it drives well. If it is power you seek, a larger cam would probably live better behind a set of FLP's and ported heads.
Tuning - A tune would work some magic for you.

Stock vs stock, a 02Z will pull harder than a 99Z. He has a leg-up on you already.

Good Luck <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

is anyone getting good numbers with a gtp220 cam? also the heads have 2.055/1.60 valves so i suppose a large cam would really wake these up..

 

The 9inch did not help you in the HP department bro.You are probably losing a good 15-20 hp through that.Also how much does your car weigh and what kind of cars are you running against.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by L4m3r:
<strong>is anyone getting good numbers with a gtp220 cam? also the heads have 2.055/1.60 valves so i suppose a large cam would really wake these up..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes a larger cam will wake them up.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Alonzo:
<strong>The 9inch did not help you in the HP department bro.You are probably losing a good 15-20 hp through that.Also how much does your car weigh and what kind of cars are you running against.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">how do you figure you lose that much or lose any at all?

 

Why do you say that a stock 02 will pull on a stock 99?? What is the diffrence??? Thanks

 

I'd take her to a dyno for a current baseline, then do some tuning.

 

02's and i believe 01's have the LS6 intake and manifolds stock (I hate you guys <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ). So they do dyno better stock. BUT, a '98 say will pick up more hp with a header upgrade than an '01-02 because they have the better stock stuff(the LS6 guys). in the end i'm guessing a '02 vs say a '98 with the same mods would post about the same #'s.

<small>[ August 01, 2002, 06:47 AM: Message edited by: 2QuikTA ]</small>