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Looking at getting LS1 Long Block, help?

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Old 02-19-2012, 08:54 PM
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Originally Posted by jrmchevyman
I would have bought it for that too, if I had the money at the time. I have seen them go around here for the same price.

For an off the shelf cam a 220 or 224 like stated would be good. Or a custom 22x/22x like a 222/22x, 220/22x, etc..

I like ls1 motors, kinda glad you did that instead of going to the 6.0 like 95% of the guys.
I was thinking something like a 222/226ish with something like a lift somewhere around the .570 area. I'm running a 3k stall currently.

I've looked into the 6.0 route, around here you can't get one with less than 150,000 miles without spending $1200-1500.

I don't know if I want to use the stock heads and mill them a hair for a bit of a compression boost. The 243's on my 5.3 are 60cc chambers, but I think that'll be too much compression, either I'll mill the 241's, or swap them out with the 243's and run thicker gaskets to offset the smaller chambers.
Old 02-20-2012, 12:21 AM
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60cc head on a ls1 is 11.27 to 1 with stock head gaskets
Dont be scared people run 5.3 heads all the time on ls1 motors.
yours vs stock 61.15cc 5.3 heads is only a small gain in compression

or you could run a thick gasket or -4cc dish pistons to lower compression.
-4cc dish piston would be 10.7 to 1

Last edited by grey matter 04; 02-20-2012 at 12:27 AM.
Old 02-20-2012, 02:25 AM
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I ran a set of milled down 5.3 heads on my ls1 in my old camaro with stock gaskets.... dont be a baby!
Old 02-20-2012, 08:11 AM
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243 heads with 60cc chambers? Must have been really milled, stock they are 64.5cc
Old 02-20-2012, 09:14 AM
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Originally Posted by TXSZ66AVLANCHE
243 heads with 60cc chambers? Must have been really milled, stock they are 64.5cc
Milled .030

Originally Posted by gasmachine85
I ran a set of milled down 5.3 heads on my ls1 in my old camaro with stock gaskets.... dont be a baby!
I guess even running around 11.25 CR... the cam will bleed some off too. I was just concerned running such a high CR if it starts to use oil. This is a DD truck. I think when I get the motor I'll run it up to the machine shop, have them put a fresh crosshatch in it, put the rotating assembly together, and new bearings.

Last edited by dmelvin; 02-20-2012 at 09:20 AM.
Old 02-20-2012, 08:19 PM
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54-418-11 - XFI RPM Hydraulic Roller Camshafts

I think this cam with 1.8 rockers is close to what I'm looking for. I'm on the fence about getting a Pat G cam. Not because I don't think he knows his stuff, but just because of how busy he is and the wait time.
Old 02-20-2012, 08:43 PM
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man idk that 222/226 has proven its self very well
Many guys on ls1 tech have broke 400hp easy with that cam
Have you seen the dyno sheets ? I was very impressed
Old 02-20-2012, 09:06 PM
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Originally Posted by grey matter 04
man idk that 222/226 has proven its self very well
Many guys on ls1 tech have broke 400hp easy with that cam
Have you seen the dyno sheets ? I was very impressed
No, I haven't seen them. I haven't really looked at many cams yet.

The 222/226 is an EPS lobe isn't it?

Nevermind... Found it. I'm thinking about going with beehive springs since this is a DD, or am I better off with getting a set of duals?

Last edited by dmelvin; 02-20-2012 at 09:20 PM.
Old 02-20-2012, 09:42 PM
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yes EPS
i would run duals with that cam
Old 02-21-2012, 12:24 AM
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Another vote for dual springs. You'll be pulling some high rpm with that cam.


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