Question on TSP Cylinder Heads Stage 2.5
05-10-2009, 08:07 PM
#1
Question on TSP Cylinder Heads Stage 2.5 Just curious if anyone has these heads, and what kind of rwhp gain did they get? Any info would be great... The car currently has MS3 Cam, Pacesetter long tubes, SLP air lid, and smooth bellow. Thanks!!!!
Item Detail
Name:
PRC LS6 Stage 2.5 CNC Ported Heads
Item#:
199-PRCLS6
Precision Race Components LS6 stage 2.5 CNC ported cylinder heads. Fully CNC ported LS6-based cylinder heads!
NEW GM 243 or 799 Cores
2.02"/1.575" Stainless Steel Valves
PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals
Completely Assembled & Setup To Your Specs!!
Options
Spring Kit:
PRC Double Spring Kit (.660"Lift) PRC .675" Lift EHT Spring Kit (Add $60.00)
Valve Options
2.02"/1.575" Valves
Your Price
Base Price/ea.
$1,499.99
$1,424.99
Your Price: (customized)
$1,424.99
Item Detail
Name:
PRC LS6 Stage 2.5 CNC Ported Heads
Item#:
199-PRCLS6
Precision Race Components LS6 stage 2.5 CNC ported cylinder heads. Fully CNC ported LS6-based cylinder heads!
NEW GM 243 or 799 Cores
2.02"/1.575" Stainless Steel Valves
PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals
Completely Assembled & Setup To Your Specs!!
Options
Spring Kit:
PRC Double Spring Kit (.660"Lift) PRC .675" Lift EHT Spring Kit (Add $60.00)
Valve Options
2.02"/1.575" Valves
Your Price
Base Price/ea.
$1,499.99
$1,424.99
Your Price: (customized)
$1,424.99
05-11-2009, 07:51 AM
#3
Do you already have aftermarket pistons in your short-block or are you planning to flycut? The MS3 will not fit with those heads on a true flat-top (like OE) piston. However, the Stage 2.5 5.3's and the PRC 215's will 
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
05-11-2009, 10:47 AM
#5
12 Second Club
iTrader: (4)
Join Date: Jan 2005
Location: Texas
Posts: 1,200
Likes: 0
Received 0 Likes
on
0 Posts
Im running these heads but with the older size valve-2.04 intake and 1.57 ex- but with a -4cc dish piston- the heads were 64cc and a stock gasket so it was nowhere near the compression I wanted to maximize this cam-MS3- but it still ran strong. The heads are being reworked for more compression, I am running a ported Fast 92/92- 1 7/8 headers and dual exhaust. The 5.3s have a smaller runner better suited for a 346 and will give you better PTV clearance. I was running a best of 8.0 in the 1/8 here in west texas on a 315-35-17 M/T dragradial full weight car. Before head work. Car still waiting to get heads back to reassemble.
05-11-2009, 12:11 PM
#7
Ok what kind of rwhp gain are you getting with these heads and are you running pumps gas?
PRC 215cc CNC Ported LS Cylinder Heads
OR PRC 220cc 5.3L Stage 2.5 CNC Ported Heads
Which would you go with with my cam and bolt ons etc...
thanks
http://www.texas-speed.com/shop/item...id=84&catid=40
http://www.texas-speed.com/shop/item...d=993&catid=40
PRC 215cc CNC Ported LS Cylinder Heads
OR PRC 220cc 5.3L Stage 2.5 CNC Ported Heads
Which would you go with with my cam and bolt ons etc...
thanks
http://www.texas-speed.com/shop/item...id=84&catid=40
http://www.texas-speed.com/shop/item...d=993&catid=40
