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Old 08-28-2011, 01:23:48 PM   #1
pete389l
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ls head confusion

what head is better the cnc ported l92 #88958698 or the cnc ls3 #88958758 or scoggins #sd8801-1 going on a 6 liter whipple supercharger ,6 speed tremec ,1981 z28
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Old 08-28-2011, 05:19:47 PM   #2
usmcz28
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PRC heads are great from what I hear, but honestly what they charge for porting vs. improvement isn't worth it. The stock heads flow great and unless you are going all out with a forged build I wouldn't waste the money.
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Old 08-28-2011, 10:14:19 PM   #3
pete389l
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I will have forged pistons and H beam rods stock stroke do this heads flow close or are the cnc l92s the best of the three
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Old 08-29-2011, 12:32:29 AM   #4
Aceshigh
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LS1tech is probably a better resource to ask that question to be honest.

You're going to have many more LS enthusiasts at your disposal.
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Old 08-29-2011, 03:22:15 PM   #5
usmcz28
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Quote:
Originally Posted by Aceshigh
LS1tech is probably a better resource to ask that question to be honest.

You're going to have many more LS enthusiasts at your disposal.


Ahem, some of us do know LS engines here. But yes there is a wealth of knowledge over there about this.

The debate was wether or not it was worth the 20HP for $1000 port job. To me the gains just do not seem worth it as the only clear up a little but do not offer much in return. If I were to spend the money I'd rather put it into the transmission of suspension at that point. BUT it's not my money so I can only suggest.
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Old 08-29-2011, 06:47:28 PM   #6
70 gsconvt
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You can pick up cnc'd heads for not much more than unported ones. I just picked up a cnc'd pair with gold springs (.650 lift), titanium retainers for $1,100, shipped. You'll pay around $700 just for a pair of factory heads.
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Old 08-29-2011, 10:10:37 PM   #7
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Im kinda with usmc on this one, but you have to ask your self, is this going to be strictly a track car where ever bit of power is needed, or just a play toy that youre going to drive on the street. IMO, i dont think id pay 1100 dollars for 20 hp, unless i was putting a buttload of money into JUST the engine. The power to money ratio just isnt there. Aces is right though, hit up LS1Tech, i learned alot of stuff over there, and who knows, you might find a set of used heads for cheaper over there! Pics and timeslips when its finished! Happy building!
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Old 08-29-2011, 10:49:38 PM   #8
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I'm all about $$$$$$ to results scenerio with my wallet. If the money I spend doesn't make it handle better or go faster for a specific amount I see that as a loss. I know several of the vendors on LS1tech have CNC heads available as well as you sending yours in to get the work done. I'm just not convinced the money to HP ratio is there. I say turbo that pig and be done with it.



While I do inderstand some upgrades are just done to do them, kind of like flames form the exhaust. That one has always made me giddy like a school girl with no panties.
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Old 08-29-2011, 11:07:38 PM   #9
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I have probably read every post on ls1tech concerning L92 heads and the consensus is that porting these heads is not a good bang for the buck. They money is better spent on the valve train, intake system, headers, etc. They jury is still out on whether AFR or Trickflow heads are worth their high cost.
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Old 08-29-2011, 11:24:01 PM   #10
usmcz28
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Quote:
Originally Posted by mrvedit
I have probably read every post on ls1tech concerning L92 heads and the consensus is that porting these heads is not a good bang for the buck. They money is better spent on the valve train, intake system, headers, etc. They jury is still out on whether AFR or Trickflow heads are worth their high cost.


Thats why mine are stock excpet for the springs so I can run my new cam

I bought mine used for $650 shipped and they were off of and LS3 with less than 10k on them.
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Old 08-30-2011, 06:33:43 AM   #11
70 gsconvt
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Originally Posted by usmcz28
Thats why mine are stock excpet for the springs so I can run my new cam

I bought mine used for $650 shipped and they were off of and LS3 with less than 10k on them.


OK. So for $450 extra, you get the extra 20 hp. That's $22+- per hp. Not too bad. I've seen in plenty of car magazines and the shows on TV how they'll drop $1000+ and see 10-15hp gains and says that's a good deal.
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Old 08-30-2011, 01:19:15 PM   #12
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Quote:
Originally Posted by 70 gsconvt
I've seen in plenty of car magazines and the shows on TV how they'll drop $1000+ and see 10-15hp gains and says that's a good deal.

Magazines and TV shows have advertisers and the editors are sure to promote them in hopes of keeping them as advertisers. Its part of the game.
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Old 08-30-2011, 02:19:16 PM   #13
usmcz28
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Originally Posted by 70 gsconvt
OK. So for $450 extra, you get the extra 20 hp. That's $22+- per hp. Not too bad. I've seen in plenty of car magazines and the shows on TV how they'll drop $1000+ and see 10-15hp gains and says that's a good deal.


So that extra $450 helps me rebuild my front end suspension and I'll just go cheap later on and put some nitrous on it

My car has sat for so long I have to do so much to it on a budget. Future goals include a nice turbo set up and i'll need those few exra CC's in the combustion chamber. And honestly I just dont see spending that much when even the vendors say sometimes it's just not worth it. BUT to each his own, it's not my money so I say buy a few sets ans try them out to see which ones you like best
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Old 08-30-2011, 03:21:49 PM   #14
70 gsconvt
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As my wife says when she's shopping and I say "How much?" "It's only money. You can always make more!"
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Old 08-30-2011, 07:42:47 PM   #15
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Originally Posted by 70 gsconvt
As my wife says when she's shopping and I say "How much?" "It's only money. You can always make more!"


Priorities, especially with 2 kids and a wife working part time while going to school. I get to be a, whats the term she used "thrifty shopper" now.

I can always make more money but I like to spend it wisely.
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