Looking for ls2 243 head porting!
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
Looking for ls2 243 head porting!
Is there any vendors on here that you would recommend for head porting and polishing. I have a btr stage 4 cam with headers and Cai, and super damper! I have seen guy putting down 500whp with the ls2 and I'm only at 425 with current mods. Any suggestions would be awesome.. I am running 4.11 gears so I don't mint the big camm.. much appreciated
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
Awesome just info I needed. I just got a ls3 intake Givin to me for wrapping a guys hood so now I just need to find some heads! This sounds like the route I will go! I wonder if I will run into valve clearance with ls3 heads with this stage 4 cam thow? Do you think I would need to flycut pistons?
Pro
Joined: Jul 2012
Posts: 635
Likes: 54
From: Phoenix Arizona
Awesome just info I needed. I just got a ls3 intake Givin to me for wrapping a guys hood so now I just need to find some heads! This sounds like the route I will go! I wonder if I will run into valve clearance with ls3 heads with this stage 4 cam thow? Do you think I would need to flycut pistons?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Premium Supporting Vendor
Joined: Dec 2008
Posts: 137
Likes: 100
We can get you taken care of.
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
We can get you taken care of.
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
https://shop.katechengines.com/produ...er-heads-pair/
Pro
Joined: Jul 2012
Posts: 635
Likes: 54
From: Phoenix Arizona
https://www.texas-speed.com/p-1388-p...head%20porting
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,684
From: Southeast TX
You're kinda all over the place. Nothing wrong with that. It's just difficult to help you not know which direction you're going.
If you do go with LS3 heads on a stock short block LS2, your static CR will go down quite a bit. 65cc chamber volume heads for the LS2 (243, 799 heads) vs 70cc for the LS3 (821,823 heads). You're shooting yourself in the foot if you don't mill the LS3 heads along with employing a .040 head gasket. I would imagine you'll need to fly cut your pistons with any sort of big duration/high lift cam. If you're unable or unwilling to do the fly cutting, you're better off just having your 243 heads worked or going with aftermarket catty port heads.
If you do go with LS3 heads on a stock short block LS2, your static CR will go down quite a bit. 65cc chamber volume heads for the LS2 (243, 799 heads) vs 70cc for the LS3 (821,823 heads). You're shooting yourself in the foot if you don't mill the LS3 heads along with employing a .040 head gasket. I would imagine you'll need to fly cut your pistons with any sort of big duration/high lift cam. If you're unable or unwilling to do the fly cutting, you're better off just having your 243 heads worked or going with aftermarket catty port heads.
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
You're kinda all over the place. Nothing wrong with that. It's just difficult to help you not know which direction you're going.
If you do go with LS3 heads on a stock short block LS2, your static CR will go down quite a bit. 65cc chamber volume heads for the LS2 (243, 799 heads) vs 70cc for the LS3 (821,823 heads). You're shooting yourself in the foot if you don't mill the LS3 heads along with employing a .040 head gasket. I would imagine you'll need to fly cut your pistons with any sort of big duration/high lift cam. If you're unable or unwilling to do the fly cutting, you're better off just having your 243 heads worked or going with aftermarket catty port heads.
If you do go with LS3 heads on a stock short block LS2, your static CR will go down quite a bit. 65cc chamber volume heads for the LS2 (243, 799 heads) vs 70cc for the LS3 (821,823 heads). You're shooting yourself in the foot if you don't mill the LS3 heads along with employing a .040 head gasket. I would imagine you'll need to fly cut your pistons with any sort of big duration/high lift cam. If you're unable or unwilling to do the fly cutting, you're better off just having your 243 heads worked or going with aftermarket catty port heads.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,684
From: Southeast TX
You might also consider having your intake manifold ported and rod modded. A ported throttle body could help some too. That's if you're staying n/a. If you're going to throw nitrous at it, you can just add a little more juice for less money.
I used Tx Speed to port my heads for my LS3 build. Also had them milled .010 and used Cometic MLS .040 head gaskets. No PTV clearance issues with a custom Cam Motion 226/234 115+4 with .620 lift on both sides. Pretty much a baby cam compared to what you're using. I think the static CR worked out to about 11.3:1. It touched 500/454 at the wheels which was 10 or 15 hp more than I thought it would make.
Tx Speed will disassemble, clean, CNC port, do a competition valve job, mill as much as you want, and assemble with your valve spring of choice. About $800. You get back a new looking set of cylinder heads ready to bolt on. Hell of a deal.
I used Tx Speed to port my heads for my LS3 build. Also had them milled .010 and used Cometic MLS .040 head gaskets. No PTV clearance issues with a custom Cam Motion 226/234 115+4 with .620 lift on both sides. Pretty much a baby cam compared to what you're using. I think the static CR worked out to about 11.3:1. It touched 500/454 at the wheels which was 10 or 15 hp more than I thought it would make.
Tx Speed will disassemble, clean, CNC port, do a competition valve job, mill as much as you want, and assemble with your valve spring of choice. About $800. You get back a new looking set of cylinder heads ready to bolt on. Hell of a deal.
Last edited by old motorhead; Sep 20, 2022 at 05:19 PM.
Thread Starter
Cruising
Joined: Sep 2022
Posts: 10
Likes: 0
You might also consider having your intake manifold ported and rod modded. A ported throttle body could help some too. That's if you're staying n/a. If you're going to throw nitrous at it, you can just add a little more juice for less money.
I used Tx Speed to port my heads for my LS3 build. Also had them milled .010 and used Cometic MLS .040 head gaskets. No PTV clearance issues with a custom Cam Motion 226/234 115+4 with .620 lift on both sides. Pretty much a baby cam compared to what you're using. I think the static CR worked out to about 11.3:1. It touched 500/454 at the wheels which was 10 or 15 hp more than I thought it would make.
Tx Speed will disassemble, clean, CNC port, do a competition valve job, mill as much as you want, and assemble with your valve spring of choice. About $800. You get back a new looking set of cylinder heads ready to bolt on. Hell of a deal.
I used Tx Speed to port my heads for my LS3 build. Also had them milled .010 and used Cometic MLS .040 head gaskets. No PTV clearance issues with a custom Cam Motion 226/234 115+4 with .620 lift on both sides. Pretty much a baby cam compared to what you're using. I think the static CR worked out to about 11.3:1. It touched 500/454 at the wheels which was 10 or 15 hp more than I thought it would make.
Tx Speed will disassemble, clean, CNC port, do a competition valve job, mill as much as you want, and assemble with your valve spring of choice. About $800. You get back a new looking set of cylinder heads ready to bolt on. Hell of a deal.