408ci stroker + Procomp heads
Thread Starter
Racer
Joined: Mar 2011
Posts: 347
Likes: 15
408ci stroker + Procomp heads
Hi guys,
I'm planing of installing a 408ci stroker in my LS2 block and a set of Procomp CNC bare heads.
* Lunati Voodoo 4.00“ Stroker 4340 steel crankshaft
* Lunati Voodoo 6.125“ H-Beam connecting rods
* Mahle PowerPak Flat Top Pistons
* Mahle 1.5mm, 1.5mm, 3.0mm File Fit Piston Rings
* Clevite H-Series Main Bearings
* Clevite H-Series Rod Bearings
11.5:1 on a 64cc head.
The procomp heads are these ones:
Finished Part No: PC3017-64
Valve Angle: 15deg
Valve Springs: 2.02' / 1.55'
Intake Volume: 225cc
Chamber Volume: 64cc
Comp. Valvejob: No
Port Finish: CNC
Chamber Finish: CNC
Casting Material: Alum.
I allready have Comp XER273HR cam 224/230 581/588 114lsa, titanium retainers, double valve springs, and I want to transfer them on the Procomp heads.
Any thoughs ?
I'm planing of installing a 408ci stroker in my LS2 block and a set of Procomp CNC bare heads.
* Lunati Voodoo 4.00“ Stroker 4340 steel crankshaft
* Lunati Voodoo 6.125“ H-Beam connecting rods
* Mahle PowerPak Flat Top Pistons
* Mahle 1.5mm, 1.5mm, 3.0mm File Fit Piston Rings
* Clevite H-Series Main Bearings
* Clevite H-Series Rod Bearings
11.5:1 on a 64cc head.
The procomp heads are these ones:
Finished Part No: PC3017-64
Valve Angle: 15deg
Valve Springs: 2.02' / 1.55'
Intake Volume: 225cc
Chamber Volume: 64cc
Comp. Valvejob: No
Port Finish: CNC
Chamber Finish: CNC
Casting Material: Alum.
I allready have Comp XER273HR cam 224/230 581/588 114lsa, titanium retainers, double valve springs, and I want to transfer them on the Procomp heads.
Any thoughs ?
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Maybe someone can help me out... the OP says he is installing 4" stroker.. I'm also getting a 4" stroker and STOCK bore.. and was told my car would be 403 ci In fact I think I'm getting the same rods, and pistons...(same brand) maybe his are bigger if he has larger pistons ??
How does the OP get 408 ci. ??? I was told my motor would be 403 ci.
How does the OP get 408 ci. ??? I was told my motor would be 403 ci.
Le Mans Master
Joined: Apr 2011
Posts: 7,820
Likes: 411
From: Montreal
St. Jude Donor '13
He may be boring the block a bit. An LS2 with a 4.00 stroke and 6.125 rods is actually a 402 with a stock bore.
Some say 403 and some 402. depends if they count the stock bore, or 4.005 with honing I guess.
You can calculate here... http://www.wallaceracing.com/cid.php
Some say 403 and some 402. depends if they count the stock bore, or 4.005 with honing I guess.
You can calculate here... http://www.wallaceracing.com/cid.php
Last edited by realcanuk; Sep 4, 2013 at 12:44 PM.
Race Director
Joined: Dec 2006
Posts: 12,367
Likes: 2,900
From: Fort Worth, Texas
That cam is too small for a 408 and the DCR would be high that much static compression. I'd run a bigger cam with more lift to better take advantage of the ported heads. Feel free to give me a call if you'd like to discuss details.
Race Director
Joined: Dec 2006
Posts: 12,367
Likes: 2,900
From: Fort Worth, Texas
He may be boring the block a bit. An LS2 with a 4.00 stroke and 6.125 rods is actually a 402 with a stock bore.
Some say 403 and some 402. depends if they count the stock bore, or 4.005 with honing I guess.
You can calculate here... http://www.wallaceracing.com/cid.php
Some say 403 and some 402. depends if they count the stock bore, or 4.005 with honing I guess.
You can calculate here... http://www.wallaceracing.com/cid.php
Thread Starter
Racer
Joined: Mar 2011
Posts: 347
Likes: 15
I want a street setup with decent street maners
. What setup would you recomand ?
Thread Starter
Racer
Joined: Mar 2011
Posts: 347
Likes: 15
Doug Thorley Tri-Y LT and Procomp / Typhoon 96mm Intake with stock TB.
I want a street setup with low end torque. I can go with 95 fuel all the time, no problem.
I want a street setup with low end torque. I can go with 95 fuel all the time, no problem.
Last edited by ElSpa; Sep 5, 2013 at 07:36 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Le Mans Master
Joined: Apr 2011
Posts: 7,820
Likes: 411
From: Montreal
St. Jude Donor '13
Race Director
Joined: Dec 2006
Posts: 12,367
Likes: 2,900
From: Fort Worth, Texas
Those are 1.875" primaries? I'd go with a FAST 102 personally over that intake unless it's been ported. What's your planned max rpm? With that octane you could run that little cam and it would be a torque monster, just the power will fall off up top.
Last edited by PRE-Z06; Sep 5, 2013 at 03:44 PM.
Thread Starter
Racer
Joined: Mar 2011
Posts: 347
Likes: 15
1 7/8" primaries and 3" Collector .... maybe I'll go with FAST if the funds are there in the end....or I can have the Thyphoon ported, no problem.
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not
Last edited by ElSpa; Sep 6, 2013 at 05:47 AM.
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
1 7/8" primaries and 3" Collector .... maybe I'll go with FAST if the funds are there in the end....or I can have the Thyphoon ported, no problem.
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not
Thread Starter
Racer
Joined: Mar 2011
Posts: 347
Likes: 15
The FAST is a great intake for the LS2 - http://forums.corvetteforum.com/c6-t...st-intake.html
. Also very pricey
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Well, if you do, please take a look at these two items: http://store.katechengines.com/bille...sioner-p2.aspx & http://store.katechengines.com/ati-s...ts-v-p230.aspx They are not cheap, but they are the "BEST" IMO. 
Race Director
Joined: Dec 2006
Posts: 12,367
Likes: 2,900
From: Fort Worth, Texas
1 7/8" primaries and 3" Collector .... maybe I'll go with FAST if the funds are there in the end....or I can have the Thyphoon ported, no problem.
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not
Rev limit should be whatever is safe (I'm in the dark here), as I said I want a street setup with decent iddle / move around / parking / etc.
I don't neccesarly want to keep this cam, if I can get both low torque and decent power gains up top, then why not