And they might also maintain more compression ratio as well, especially if PTV clearance permits some milling.
LS2 build, heads choice??
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Instructor
Joined: Jul 2011
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From: KCMO
LS2 build, heads choice??
Looking into doing some heads on my M6 ls2, i have a cam, full boltons and dont know which way to go as far as heads choice. I thought of getting my stock 243 ported but as I read you may be able to get much more from different heads. So I guess my question is is there a $1000 set of heads out there worth getting, or port my stock ones?
I even read a GMperformance article on L92 heads with L76 intake putting out over 545hp with full bolt ons.
I even read a GMperformance article on L92 heads with L76 intake putting out over 545hp with full bolt ons.
Track Junky
Joined: Jun 2007
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From: Orlando Area
Tech Contributor
The LS3 heads breathe as good or better than ported 243 castings and they are relatively cheap. Only problem is that you would have to swap your springs and bump compression bvack up by milling or Cometic gaskets. Depending on your cam, you may run into PTV issues. I got my stock 243 heads ported at Advanced Induction and am very happy with the results. Their competitors include TEA, patriot and Livernois, all for about the same price.
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From: Raleigh / Rolesville NC
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From: Hudson WI
NCM Sinkhole Donor
I am doing LS3 heads with a cam and FAST intake. I had the heads CNC ported by Wegner engines.
If I had it to do over, I would get LSA heads. They are slightly less expensive and stronger.
If I had it to do over, I would get LSA heads. They are slightly less expensive and stronger.
Track Junky
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From: Orlando Area
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I think the heads are about $950-1000 for the pair (someone please correct me if I am wrong. I haven't looked up the price myself) and you could sell your 243's for $300-400. If your patient, you may be able to pick up a set of used LS3 heads for even cheaper.
Burning Brakes
Joined: Dec 2007
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From: Dyer IN
You are absolutely correct regarding air velocity. Let me rephrase... The LS3 heads are a good investment if you are looking for a high Hp setup on a budget due to their flow characteristics.
I think the heads are about $950-1000 for the pair (someone please correct me if I am wrong. I haven't looked up the price myself) and you could sell your 243's for $300-400. If your patient, you may be able to pick up a set of used LS3 heads for even cheaper.
I think the heads are about $950-1000 for the pair (someone please correct me if I am wrong. I haven't looked up the price myself) and you could sell your 243's for $300-400. If your patient, you may be able to pick up a set of used LS3 heads for even cheaper.
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From: Short Hills, NJ
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From: Hudson WI
NCM Sinkhole Donor
If you don't have them ported, you can do new heads for about that price with new springs.
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Thread Starter
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Joined: Jul 2011
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From: KCMO
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.
Feel more than happy to send links, post you dyno sheets anything to give me a better ideal of what power your heads made.
Burning Brakes
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From: Dyer IN
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The cam specs would be a determining factor in PTV clearance imo especially if you are going to be milling, running a thinner head gasket and not flycutting. PRC Stage 2.5 243 heads just picked up 35rwhp on an LS2 we just finished with a cam of similar size.