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What gains to expect from LS6 head swap only?

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Old 10-03-2011, 03:25 PM
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Originally Posted by IRONFIST
I did exactly what you want to do, LS6 heads on a stock bottom end / cam. HP went up but so did gas mileage! Which rocked...
However, it would have taken me only an hour or so to do a cam swap while doing the heads so I wish I had done that.
I'm doing that now, and ripping the heads off anyway so I should have done it all at once.
Good to hear. I may do the ls6 cam also all depends I I find one at a steal if not no biggie for now. When u did just the heads did it require tuning?
Old 10-03-2011, 05:46 PM
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It will add power but for the work involved I would have them worked first
Old 10-03-2011, 09:57 PM
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Originally Posted by MonmouthCtyLS7
It will add power but for the work involved I would have them worked first
Not a big deal, just doing it to freshen up the top end for now. Going to be putting a new bottom end in probably next year and go turbo, ill have them worked and get a nice cam to compliment them then.
Old 10-04-2011, 12:11 PM
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So can anyone tell me who has done this does it need to be tuned or no? Obviously a tune will help I am aware of that but seeing as its not really as drastic as putting in a monster cam and all. Should I expect any idle issues or lean/rich problems on the stock tune or should the sensors compensate enough?
Old 10-04-2011, 12:32 PM
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Originally Posted by drpokey
Please dont waste your time on this.... I did this many years ago, and with bolt ons and ported 243 heads dynoed 300 rwhp on a 2004 ls1 gto. About 4000 miles later, i put in a tsp 224r cam andvthe nextvtime itvwas dynoed, it put down 393.... the cam isvyour bang for the buck. NEVER heads before cam. Learn from my experience.
I agree with you to do a cam first but I dont believe that you gained 93 rwhp with a 224r cam.
Old 10-04-2011, 02:41 PM
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If you do just the heads I would atleats send them off to someone like A.I and have a good valve job done. You will benefit the most with the head swap and a really good valve job.
Old 10-04-2011, 03:17 PM
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Didn't the 243's come on some 2001 - 2002 camaros anyway? I know my 02 had 243's on it from the factory.
Old 10-04-2011, 03:44 PM
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Originally Posted by 2camaros6702
Didn't the 243's come on some 2001 - 2002 camaros anyway? I know my 02 had 243's on it from the factory.
Lucky you, my TA is 02 and it came with 241's, I read that only a couple of late 02 came with 243's but I'm not sure though.
Old 10-04-2011, 05:31 PM
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Originally Posted by 2camaros6702
Didn't the 243's come on some 2001 - 2002 camaros anyway? I know my 02 had 243's on it from the factory.
No I don't believe so. I know they had LS6 intakes and a few had LS6 blocks.
Old 10-04-2011, 09:08 PM
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ugh, 243s never came on a LS1. '00 - '04 got 241s
Old 10-04-2011, 09:12 PM
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I gained over 40hp going to an afr 205 head over a ported ls1 head. Buy some good heads and make better gains.
Old 10-04-2011, 09:34 PM
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I put stage 2.5 CNC Ls6 heads on my ls2 with cam and got 474 at the wheels.
Old 10-04-2011, 10:03 PM
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with hi mileage replace the complete valve train.do a DIY valve seat leak test.consider a thunder racing cam pkg,the tr224 is a great cam .get a cam swap kit from TSP with a ls2 chain.
Old 10-04-2011, 10:36 PM
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243's Never came on any fbody. The late model ones had 241 castings, thats probably what your thinking of. If you bought it with 243's someone installed them.
Old 10-04-2011, 10:44 PM
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Originally Posted by garygnu
with hi mileage replace the complete valve train.do a DIY valve seat leak test.consider a thunder racing cam pkg,the tr224 is a great cam .get a cam swap kit from TSP with a ls2 chain.
Why would I bother with that with my plans for next yr, and the heads im looking at are not high mileage. They have around 20k on them. If I buy a brand new cam it will be next year AFTER I do the turbo and would be after I work the heads IF I decide to bother with it. All depends on if im happy with the setup power wise with just the turbo. I'm pretty familiar with most the cams out there, the TR224 is great for a dd setup but wouldnt be best for the route im going.
Old 10-05-2011, 06:17 AM
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You are correct it had the 241's NOT the 243's. I had to get them off the shelf and take a look last night! I bought it new of the show room floor so everything that has ever been done has been done by myself!! Thank God!
Old 10-05-2011, 08:06 AM
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Originally Posted by HottLS1Z
Well if you read the thread closely it doesn't say anything about "should I?" It says I am and am wondering what kinda gains people experienced....never said I was undecided...
Your title asks if it is worth it... Which implies you are asking if it would be worth your time to do... Which implies you are undecided as to whether or not you are going to install said heads

Which brings me to my question... Who are you going to rope into installing these heads because anyone who knows you knows that you usually con somone into doing your labor for you

BTW... Did I mention

Old 10-05-2011, 09:32 AM
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Originally Posted by ryle
Your title asks if it is worth it... Which implies you are asking if it would be worth your time to do... Which implies you are undecided as to whether or not you are going to install said heads

Which brings me to my question... Who are you going to rope into installing these heads because anyone who knows you knows that you usually con somone into doing your labor for you

BTW... Did I mention

Does it ask that? I have Already decided just wondering ppl's experience with the swap as of late.

As for the install I'll do them myself this time. Didnt last time because had never done it, and it was kinda a DD so couldnt risk screwing it up, didnt want to be rebuilding it every yr like you are stuck doing
Now stop trolling my thread homo I have all winter to take my time and do it right
Old 10-05-2011, 09:38 AM
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I guess my next question would be If I do the 02-03 Z-06 Cam with the heads it as well, do I need to change the push rods to a different length as well and if so anyone know the size off hand for this combo? I seen when I was searching that when people do just that cam they need a longer pushrod because of the smaller base circle of the cam. Not sure if this applies to the 243 heads as well, have not had time to search around yet.
Old 10-05-2011, 12:09 PM
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Originally Posted by HottLS1Z
I guess my next question would be If I do the 02-03 Z-06 Cam with the heads it as well, do I need to change the push rods to a different length as well and if so anyone know the size off hand for this combo? I seen when I was searching that when people do just that cam they need a longer pushrod because of the smaller base circle of the cam. Not sure if this applies to the 243 heads as well, have not had time to search around yet.
the correct answer is maybe.


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