Tainted

iTrader: (9)

Looking for people running the PRC 237 heads and their results and combos.
Did a lot of searching, but a lot of the threads are older and still very little info to be found.

So having said that these will be going on a 408 stroker

Also, if TSP chimes in what would the PRC 237 heads cost WITHOUT valvesprings?

Tainted

iTrader: (9)

bump for a new day?

Herkaleez

this is from the 1st start up dyno. I had a collapsed exhaust lifter and some other small issues..going back to Pat G in Jan for some refining, bet it makes a lil more..
1998 camaro M6: Car was built to DD and pass emissions

TSP 408 Forged Rotating Assembly
PRC 237cc heads 66cc with .675 springs
PAT G spec’d cam 243/251 .627/.632" 113LSA +4
Morel link bar lifters
Yella Terra 1.7:1 Ratio
Racetronix 48# Fuel Injectors
FAST 102/102 w/ billet fuel rails
TSP 1 7/8 headers/catted Y

Herkaleez

onyx_rock

iTrader: (8)

I run em. See sig for setup. Dyno done after about 1500 miles on the new 408. Results through an unlocked convertor.

Tainted

iTrader: (9)

looking like some decent results!!

I'll be running 11.11:1 compression using -10cc reliefs and a cometic .041 gasket along with a FAST 102/102 Pat G spec'd cam


So how are yalls street manners? power delivery etc? I'm looknig for any info I can get!

Tainted

iTrader: (9)

been 3 days TTT for any info!!! About ready to pull the trigger but still have some doubts

JakeFusion

iTrader: (7)

Get the TFS heads with turned down LS3 valves. End of story.

If you've followed any of Chrs1313 on his quest for 520rwhp stock 346, you know he picked up like 20rwhp going to the LS3 valves in his TFS 215s.

JakeFusion

iTrader: (7)

That exhaust is holding that car back pretty bad. I know PatG can dial it in a bit more, but I bet if you went with true duals you'd pick up close to 20/15 across the board. Then that'd look better for the parts you have (~530/470).

Tainted

iTrader: (9)

I just got done talking to Matt @ TSP and we believe with me only turning 6600 tops the stock valves should be fine and I can use the prc .650 springs I already have, saving me quite a few $$'s over the TFS.

Also I hope with a lot more cubes (408) im hoping for 500/500+

I'd like to think here that ive got a very well rounded thought out setup and should be capable of doing more than my goal, or at least I sure hope so!

blue99fbody

iTrader: (5)

I did 522/465 with them and over 800whp on nitrous on my 11.7:1 404