LS2 build, heads choice??
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
After my next tune i should be between 490-500 rwhp with ported 243's. I have Spin's 230/234 cam, cometic gaskets (11.4 CR), ported FAST 102, UD pulley, LG street series headers, borla touring exhaust.
I put down 476 on a Dynojet and 460 on a Mustang without the FAST (had a ported LS2 stock intake). Guys running a more aggressive cam and LG Pro's would easily be 10+ rwhp above me. So yes, the ported 243 casting can be a good budget build and still make good power.
I think I paid about $1200 for fully CNC'd 243's with springs. These were inspected, cleaned, new valve job, new springs, seat pressure QC'd and my cam was cam doctored to verify accuracy for free. Call Phil at Advanced Induction for more details. I think just the port work was about $1000.
I put down 476 on a Dynojet and 460 on a Mustang without the FAST (had a ported LS2 stock intake). Guys running a more aggressive cam and LG Pro's would easily be 10+ rwhp above me. So yes, the ported 243 casting can be a good budget build and still make good power.
I think I paid about $1200 for fully CNC'd 243's with springs. These were inspected, cleaned, new valve job, new springs, seat pressure QC'd and my cam was cam doctored to verify accuracy for free. Call Phil at Advanced Induction for more details. I think just the port work was about $1000.
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
I make 450-457rwtq on a Dynojet SAE.
Burning Brakes
Joined: Dec 2007
Posts: 1,249
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From: Dyer IN
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you're on a budget, watch the classifieds on this site and LS1tech. If in a hair on fire hurry, chances are less that you'll find a deal. A little patience can save you a bunch of $. You might even post a "want to buy" ad. I did and found a set of low mile Livernois stage 2 CNC'd 243's for about $800 shipped. Already had good valve springs too. I had them checked by my machine shop and bolted them on. You can sell your stock 243's with upgraded v'springs easily for +-$500. That's not too hard on the budget.
Last edited by old motorhead; Jul 26, 2011 at 05:58 PM.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
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Pro
Joined: Nov 2007
Posts: 555
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From: Celina TX
I'm wondering if I should buy a set of these or if I'd be better off getting my 243's worked?
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Like Dennis and Taken already said that is my tq. I put down 501-510rwhp consistently. Everyone knows we don't go anytime of the year and lay down exact numbers each time so that's why I shared a "window" of power. Summer to winter I fall right in between those numbers everytime.
Le Mans Master
Joined: Oct 2006
Posts: 5,078
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From: Cumming, GA
Thread Starter
Instructor
Joined: Jul 2011
Posts: 153
Likes: 1
From: KCMO
http://www.texas-speed.com/c-514-cylinder-heads.aspx
I'm wondering if I should buy a set of these or if I'd be better off getting my 243's worked?
I'm wondering if I should buy a set of these or if I'd be better off getting my 243's worked?
Thats exactly the crossroad for me right now
Drifting
Joined: Sep 2004
Posts: 1,912
Likes: 33
From: S.D. CA
Remember guys Im trying my hardest to stay under $1000. A few of you suggested RPm's 243, what difference are they from me porting my 243 heads?? What power gains did you get?
And just a reminder I already have a Manley hardened rods and Dual springs, and custom grind 230's 610's 112+4 lsa cam, just installed so I really dont want to buy more parts, I just want heads to work with what i just installed.
What are LSA Heads??
Feel more than happy to send links, post you dyno sheets anything to give me a better ideal of what power your heads made.
And just a reminder I already have a Manley hardened rods and Dual springs, and custom grind 230's 610's 112+4 lsa cam, just installed so I really dont want to buy more parts, I just want heads to work with what i just installed.
What are LSA Heads??
Feel more than happy to send links, post you dyno sheets anything to give me a better ideal of what power your heads made.
Save whatever money is necessary to get the results you want the 1st time around.
