Anyone tried PRC 237CC full aftermarket casting heads?
08-25-2012, 02:12 PM
#44
I was hoping that TSP would lend (supply) SUPER CHEVY some of their 250cc LS3 or 265cc LS7 heads since they supplied them the 418 LS3 stroker short block. The idiots
(still disappointed @ SC ) threw on MAST heads instead. Everyone knows MAST has killer heads.Jon@TSP. how about mentioning to the owners they are missing out on MAJOR opportunity to show everyone what killer products you bring to the marketplace.
08-27-2012, 04:17 PM
#46
Teching In
Join Date: Aug 2011
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
I am taking my car to Pat G on Sept. 14th to find out what she will do, I will post results after that.
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
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
08-31-2012, 09:18 PM
#47
TECH Apprentice
iTrader: (1)
Join Date: Dec 2006
Location: Michigan
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
i am taking my car to pat g on sept. 14th to find out what she will do, i will post results after that.
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
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
09-15-2012, 03:59 PM
#49
Teching In
Join Date: Aug 2011
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
the car had some first time start up issues that i am going to have to work on but it made 509/448 at the wheels not sure if it will go up much after i fix it...oh well i was hoping for 550 but dream big right? i was very conservative but i did play just a lil and the thing is a BEAST...............
02-01-2013, 01:32 PM
#50
11 Second Club
the car had some first time start up issues that i am going to have to work on but it made 509/448 at the wheels not sure if it will go up much after i fix it...oh well i was hoping for 550 but dream big right? i was very conservative but i did play just a lil and the thing is a BEAST...............
02-09-2013, 01:34 PM
#51
yeah he probably had someone reputable as hell mill those. he said they were 64cc vs his 62's. He probably did lose torque because of the cam choice. His cam is probably better suited for the 5.3 id imagine. Thats why you flow heads, then buy the cam. peanut butter jelly time.
02-18-2013, 09:02 PM
#52
Teching In
Join Date: Apr 2012
Location: quebec
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
i have to re install theses 237cc with 64cc chamber with 0.100ich heads gasket to achieve 9.3CR with a Vortech YSi supercharger @ 15lbs next week.. .. cant wait to see numbers..!!
02-18-2013, 09:08 PM
#53
Teching In
Join Date: Apr 2012
Location: quebec
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Prc237 i was wrong , i forgot to raise the compression ratio to 11.1:1 and have valves float issue at 5800rpm because of the roller rockers that i put on it , so probably theses heads are better than my PRC 2.5
i didnt see their power above 5800rpm where i ve could probably seen the gain..
im planning to re install theses next week with .100inch heads gaskets to achieve 9.3 CR with Vortech YSi supercharger@ 15lbs .. cant wait to see numbers..
now sure that i was wrong...
i didnt see their power above 5800rpm where i ve could probably seen the gain..
im planning to re install theses next week with .100inch heads gaskets to achieve 9.3 CR with Vortech YSi supercharger@ 15lbs .. cant wait to see numbers..
now sure that i was wrong...
I'd be very interested in knowing the rest of the story ^^! We've tested them on the engine dyno with virtually every camshaft combo we could find, back to back with all of our other heads and numerous competitor's heads as well....Not once did they ever lose HP or TQ like you state there vs the 5.3L heads (or LS6 for that matter)!
10-29-2013, 03:41 PM
#54
Teching In
Join Date: Jun 2011
Location: Wisconsin
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Has anyone put these heads on a stock LS2? I know it says for 370 CI and larger but anything with a 4.000" bore size and that is what the LS2 has does it not? I am looking to do a heads cam package on my LS2 this winter and I am searching for that perfect combo for 500plus at the wheels. Would there be a better choice of heads instead of these?
12-30-2013, 11:41 PM
#55
Registered User
Join Date: Dec 2013
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
I am in the process of using prc 237cc heads on my factory bore LS2,, martin@tick performance speced me a custom cam for the build..can't wait to get it all together and see what it does
06 vette
A6 with yank 3600 stall
Varaam
NW 102 TB
Fast 102
TSP long tubes
Bassani cat back
06 vette
A6 with yank 3600 stall
Varaam
NW 102 TB
Fast 102
TSP long tubes
Bassani cat back
Has anyone put these heads on a stock LS2? I know it says for 370 CI and larger but anything with a 4.000" bore size and that is what the LS2 has does it not? I am looking to do a heads cam package on my LS2 this winter and I am searching for that perfect combo for 500plus at the wheels. Would there be a better choice of heads instead of these?
06-15-2017, 06:25 PM
#56
Registered User
Join Date: Jun 2017
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
