KrisR

iTrader: (2)

As the title says, I have PRC stage 2.5 5.3 heads, and a 228R/112 cam in my stock-bottom-end 2000 C5 FRC. I was thinking of upgrading these heads and cam to something more substantial. I'd like to keep the cam as driveable as possible.

I was thinking of the PRC as-cast 225cc heads ( http://www.texas-speed.com/p-3961-pr...m-package.aspx ) and maybe a Torquer cam, or whatever would work best with those heads to make nice driveable power. Seems to be a very cost-effective setup if it works.

I have a FAST 92 + LS2 90mm TB, longtubes, offroad x pipe, etc. Last dyno I made 421rwhp/391rwtq SAE corrected on a Dynojet.

I would like to make at least 450rwhp and 400rwtq with the 'next phase'.

Texas Speed guys (and others) feel free to give advice.

big dave

fwiw, I made around the same power with those same heads and t2 cam. It is a great budget combo but you should be able to reach your goals with better heads and a custom grind cam. I'm sure you can contact one of the cam guru's on this site for a better cam choice.

HCI2000SS

iTrader: (2)

Yep I have those same heads with a V2 Torquer cam, and it's a great bang for the buck combo

bestlude

iTrader: (4)

the v2 is a great cam but for your hp goals i would try a custom grind cam and after market casting heads..

Sales1@Texas-speed

KrisR give me a call Id be happy to walk you through some options and see what meets your needs and budget best. I can no doubt help you reach the power levels your looking for.

KrisR

iTrader: (2)

Thanks Aaron. I will try and give you a call sometime soon.

Sales1@Texas-speed

Awesome I look forward to it!

JakeFusion

iTrader: (7)

PRC 227 and MS4 if you want to deal with LSK lobes. That'll give you max power from a TSP package.

reeperz28

iTrader: (1)

Prc 215's and the torquer v.3 would be a deadly combo.

KrisR

iTrader: (2)

I would like an excellent midrange also. I drive this car a lot. Couple times a week to work in the summer which is a 60-mile roundtrip commute, plus playing on the weekends. I would like lobes that are easy on valvetrain also.

JakeFusion

iTrader: (7)

Then yeah, PRC 215 and V3. You'd probably find 20-25hp over your current setup. But that still has LSK lobes. TSP can put something together for you. Maybe do the Tv3 on LSL/LXL lobes for a little more longevity.

LS1T56FTW

iTrader: (3)

I bet with a lightweight flywheel/UD pulley you would get pretty close to those power goals. That would be my cheap chooch method before spending serious $ changing my setup.

Dickie-311

iTrader: (1)

i had PRC LS6 stg 2.5 heads and V3 cam in my 6.0 and it made good power thru an auto , car ran 10.82 @ 127 at 3300lbs

http://www.texas-speed.com/p-1161-pr...m-package.aspx

http://www.texas-speed.com/p-1161-pr...m-package.aspx

KrisR

iTrader: (2)

Thanks. I already have an UD pulley. I don't know what flywheel is in the car, I'm guessing a stock one.

I currently have a speed density tune in the car but the stock MAF is still in the intake tract, not sure how much restriction that would be at this point. The car has some kind of aftermarket catback on it, unknown brand, but it's pretty quiet, so there might be something hiding in there as well.

Honestly now I'm second-guessing my thought of changing it up. I guess if I can't get a solid 30-40rwhp+ gain with a different daily-driveable combo it's not worth it to me.

JakeFusion

iTrader: (7)

Unless you want to go with a bigger cam to really show off a set of good heads, you're not going to see 40hp. You might see 40HP out of the PRC 227/MS4 package.

TXZ28LS1

iTrader: (5)

The 228 is a good all around cam. I would upgrade the heads to like the PRC 227 or TFS.

KrisR

iTrader: (2)

I was thinking about that. Is the upgrade from the PRC 225s to the CNC'd 227s worth the $700 or whatever?

99T/AMAN

iTrader: (1)

I dont know that i would touch it, sounds like with the setup and you drive it alot during the summer that your setup now works for you. If you go with bigger cam and heads it may hurt your driveability like you said. Just my 2 cents.

KrisR

iTrader: (2)

I was considering just leaving it alone or maybe swapping the heads and leaving the cam, and adding a little bit of spray. I've had many power adder cars but never a nitrous car.

99T/AMAN

iTrader: (1)

I would put the money towards a turbo kit or building a 370ci engine set up that would be good for FI later down the road. If you like the driveability of the car right now i guess nitrous would be a good way to go but i want to have that power there all the time so i would go with the FI or bigger cube engine