L92 heads
08-21-2012, 01:44 PM
#7
I ran 11.90 with stock heads and a 224/228 cam.
I swapped to the L92 heads and intake and went 11.82............Awesome.
My dyno numbers did go up, IMO the problem with these heads is they are touchy as hell, just no telling how its going to run. It's like you just bolt them on, pick a cam with a blindfold and a donkey tail and see what you get.
I swapped to the L92 heads and intake and went 11.82............Awesome.
My dyno numbers did go up, IMO the problem with these heads is they are touchy as hell, just no telling how its going to run. It's like you just bolt them on, pick a cam with a blindfold and a donkey tail and see what you get.
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08-22-2012, 09:21 AM
#9
Stock LS2 heads and cam + bolt ons through 3.91 gears and stock clutch
Last edited by 409CISecondGen; 08-24-2012 at 03:29 PM.
08-22-2012, 01:09 PM
#10
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Have you even looked at ls1gto power listings for the l92 swap? Stock cam with l92 swap 415/407. Why wouldn't you do the swap? with the best putting out 486/435.
bottom of post #8
http://www.ls1gto.com/forums/showthread.php?t=286447
bottom of post #8
http://www.ls1gto.com/forums/showthread.php?t=286447
08-22-2012, 06:34 PM
#11
Dyno numbers just don't tell the whole story, that list you cited is VERY old.
Take what a stock LS3 puts down and consider that it is going to have more cubes, more cam, and bigger MAF than the LS2 swap. Also it isn't going to have valve shrouding like the 4" bore does.
You can count on one hand how many guys have surpassed 11.50-11.60 at the track with that swap, like I said these heads seem to be touchy and unpredictable.
Take what a stock LS3 puts down and consider that it is going to have more cubes, more cam, and bigger MAF than the LS2 swap. Also it isn't going to have valve shrouding like the 4" bore does.
You can count on one hand how many guys have surpassed 11.50-11.60 at the track with that swap, like I said these heads seem to be touchy and unpredictable.
08-22-2012, 06:39 PM
#12
I am not a fan of square port heads
I'll stick to unported 243s before I put L92 or LS3 heads on my car.
471/434 on untouched 243 heads
https://ls1tech.com/forums/multimedi...o-vid-ls2.html
I'll stick to unported 243s before I put L92 or LS3 heads on my car.
471/434 on untouched 243 heads
https://ls1tech.com/forums/multimedi...o-vid-ls2.html
08-23-2012, 06:13 AM
#15
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You will do fine with the right cam. I know Arthur J Guy has gone 11.2 with EDC cam/LS3 topend. The guy who I was kind of wanting to follow, has a 227/235 cam and a 3800 stall running 11.3. I like the fact you can get good number's running a smaller cam. I'm not oppossed to ported 243's either. I've actually had LS3 heads and intake, then sold them, thinking I wanted ported 243's. Either way, if you talk to EDC or one of the sponsors, they can get a good cam for you. LS3 swap is not for everyone, the main attraction of it, is you can make good power, at a great cost.
08-23-2012, 08:18 AM
#16
Dyno numbers just don't tell the whole story, that list you cited is VERY old.
Take what a stock LS3 puts down and consider that it is going to have more cubes, more cam, and bigger MAF than the LS2 swap. Also it isn't going to have valve shrouding like the 4" bore does.
You can count on one hand how many guys have surpassed 11.50-11.60 at the track with that swap, like I said these heads seem to be touchy and unpredictable.
Take what a stock LS3 puts down and consider that it is going to have more cubes, more cam, and bigger MAF than the LS2 swap. Also it isn't going to have valve shrouding like the 4" bore does.
You can count on one hand how many guys have surpassed 11.50-11.60 at the track with that swap, like I said these heads seem to be touchy and unpredictable.
08-23-2012, 03:42 PM
#17
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Ya I just spun a rod bearing so I'm rebuilding the motor, I think I have finally decided that I'm going with 402 stroker, LS3 top end and a Pat G custom cam. I'll just have to wait and see where ill be at.
08-23-2012, 06:07 PM
#18
For a budget build they work great, I still think a FAST/ AFR or Trick Flow head setup is going to outrun an LS3 topend pretty bad, of course it will cost more.
We have a guy with a FAST 102 and TFS heads on a stock LS2 short block running like 11.02@123.95 here in California. I don't think you could convince him to use a square port head.
I'm probably not the right guy to ask, like I said I gained 8 hundreths of a second with this swap. To this point it has proven to be a big waste of time.
The cam is just touchy as hell, what works on one car won't work on another, and what one builder tells you won't work, another one swears by.
08-23-2012, 06:28 PM
#20
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You have bigger than 4.000 bore there. No doubt that with the additional cubes and bigger bore of an LS3 they work awesome.
For a budget build they work great, I still think a FAST/ AFR or Trick Flow head setup is going to outrun an LS3 topend pretty bad, of course it will cost more.
We have a guy with a FAST 102 and TFS heads on a stock LS2 short block running like 11.02@123.95 here in California. I don't think you could convince him to use a square port head.
I'm probably not the right guy to ask, like I said I gained 8 hundreths of a second with this swap. To this point it has proven to be a big waste of time.
The cam is just touchy as hell, what works on one car won't work on another, and what one builder tells you won't work, another one swears by.
For a budget build they work great, I still think a FAST/ AFR or Trick Flow head setup is going to outrun an LS3 topend pretty bad, of course it will cost more.
We have a guy with a FAST 102 and TFS heads on a stock LS2 short block running like 11.02@123.95 here in California. I don't think you could convince him to use a square port head.
I'm probably not the right guy to ask, like I said I gained 8 hundreths of a second with this swap. To this point it has proven to be a big waste of time.
The cam is just touchy as hell, what works on one car won't work on another, and what one builder tells you won't work, another one swears by.
I do tend to agree. The LS3 swap is a good power/great cost swap. The Trickflow or AFR, intake swap, will undoubtedly return a good bit more power. Even the guys I mentioned running low 11's with the LS3 swap, are still in the high teens for trap (I think 119). I think even ported 243's/FAST will yield marginally better results, with DA differences/driver differences, some could argue they are close. Its basically a cost thing. You could have a couple hundred dollars in LS3 heads (after selling your 243's) which is a big advantage, especially for the average guy, hitting the track occasionally.