Slowhawk

iTrader: (12)

I was wondering what gain I should expect with some good ported stage 1's with my setup listed below.

horist

which brand? Stage I just means that it's the first stage of porting by a company... but there's no standard stage I configuration...

Slowhawk

iTrader: (12)

A set that flows just as good as JPR's.Wish I could remember the flow #'s.

JS

iTrader: (4)

I would say somewhere in the 20 to 25 RWHP range for a set of good S1 heads on top of what u have now.

Good luck.....

JS

VINCE

iTrader: (1)

You will pick up more than I did..

AlonzoVersion 1.0

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JS:
<strong>I would say somewhere in the 20 to 25 RWHP range for a set of good S1 heads on top of what u have now.

Good luck.....

JS</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">yes and if you mill them then you will get more.

Slowhawk

iTrader: (12)

How much does milling them make a difference?

LS1derfull

Some good stage 1 heads flow 280 cfm at .500" lift on intake and around 200 cfm at same lift on exhaust. This is with small volume increase around 210cc total on intake port. Milling heads can be worth 10 hp, but it depends on how much cylinder pressure is lost in usable rpm range, from your cam choice. I went with 10.6 to 1 by cutting my heads .030" and very little chamber cleanup. I feel ultimately heads should be worth 35 t0 50 hp with all aspects of combination and tune factored in. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Spazeack

Well, I think JPR (Joe Prince Racing) has some of the best flowing heads out there right now with the stock valves. He is making some serouis power from his Stage 1... also without adding a cam and a set of headers you really won't see the true potential from any heads you buy.

Slowhawk

iTrader: (12)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Terry Burger:
<strong>Typical gain is .8</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">.8 would be excellent.(If that's track times,not HP <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> )

I already have a TR 220 cam and FLP's.

dand35th

I was thinking about a .5 second, with your mods. Which would make you in the lower 12's..maybe lower!!

Terry Burger

iTrader: (4)

Typical gain is .8

Viper

iTrader: (6)

SlowHawk, I'm a little surprised the TR220 only put you at 12.84's; I thought the power would be better? Or are the times before the cam?

Slowhawk

iTrader: (12)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Viper:
<strong>SlowHawk, I'm a little surprised the TR220 only put you at 12.84's; I thought the power would be better? Or are the times before the cam?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That was before the Cam <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> So far I've gained 3mph on the Cam and a few tenths.I'm waiting till cooler weather to get an absolute gain since my 12.84 was done on a 45 degree day and all my latest runs have been 85 deg. or higher.Also I'm running my stock tires which is not helping.