Budget LQ4 with 243 Heads...NOW WITH DYNO RESULTS!
03-07-2012, 10:54 PM
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Budget LQ4 with 243 Heads...NOW WITH DYNO RESULTS! I picked up a nice LQ4 with 80k miles to go in my 6-speed Z28. I'm not going to do a complete rebuild, as both oil pressure and compression are both good.
I'll be putting on some 243 heads that are being cleaned up by West Coast Cylinder Head...Basic resurface, valve job and some new guides but no CNC, as I'm on a budget. I'm also installing new lifters and an LS6 oil pump, but now I have to figure out what I'm going to do for a cam. I'm looking for something that will be more potent than the 359 RWHP I get from my LS1 (see sig for mods), but I don't want to totally destroy my highway gas mileage, nor do I want to replace springs every 20,000 miles. I'd like to get over the 400 RWHP barrier while still meeting the above requirements.
Any suggestions for a cam that will do this?
I'll be putting on some 243 heads that are being cleaned up by West Coast Cylinder Head...Basic resurface, valve job and some new guides but no CNC, as I'm on a budget. I'm also installing new lifters and an LS6 oil pump, but now I have to figure out what I'm going to do for a cam. I'm looking for something that will be more potent than the 359 RWHP I get from my LS1 (see sig for mods), but I don't want to totally destroy my highway gas mileage, nor do I want to replace springs every 20,000 miles. I'd like to get over the 400 RWHP barrier while still meeting the above requirements.
Any suggestions for a cam that will do this?
Last edited by LS1 Racing; 06-26-2012 at 03:42 PM.
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Homer_Simpson (12-25-2021)
03-08-2012, 12:18 PM
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Dodson probably has the cam you want, or something close to it...whatever cam you go with keep your lift under .600", the ramp rates will make your springs last longer.
Plus you can go a little longer duration with your bigger cubes and still have very good street manners.
Plus you can go a little longer duration with your bigger cubes and still have very good street manners.
03-08-2012, 12:46 PM
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I'm running a rebuilt LQ4, ls6 oil pump, ls6 intake, tsp stg 2.5 ls6 heads, and a tsp 228r (228/228 .588", 112lsa)
it's not in yet, but I'm hoping to be near or over 400whp with it. I'm dropping it off tomorrow to have it finished up a bit. Gonna be a while before it goes in tho.
I'm running a rebuilt LQ4, ls6 oil pump, ls6 intake, tsp stg 2.5 ls6 heads, and a tsp 228r (228/228 .588", 112lsa)
it's not in yet, but I'm hoping to be near or over 400whp with it. I'm dropping it off tomorrow to have it finished up a bit. Gonna be a while before it goes in tho.
03-08-2012, 12:54 PM
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Dodson probably has the cam you want, or something close to it...whatever cam you go with keep your lift under .600", the ramp rates will make your springs last longer.
Plus you can go a little longer duration with your bigger cubes and still have very good street manners.
Plus you can go a little longer duration with your bigger cubes and still have very good street manners.
03-08-2012, 12:55 PM
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I'm running a rebuilt LQ4, ls6 oil pump, ls6 intake, tsp stg 2.5 ls6 heads, and a tsp 228r (228/228 .588", 112lsa)
it's not in yet, but I'm hoping to be near or over 400whp with it. I'm dropping it off tomorrow to have it finished up a bit. Gonna be a while before it goes in tho.
I'm running a rebuilt LQ4, ls6 oil pump, ls6 intake, tsp stg 2.5 ls6 heads, and a tsp 228r (228/228 .588", 112lsa)
it's not in yet, but I'm hoping to be near or over 400whp with it. I'm dropping it off tomorrow to have it finished up a bit. Gonna be a while before it goes in tho.
03-08-2012, 12:58 PM
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Will do! It's behind an A4 tho, and to a 2.73 rear so my results will vary to yours, you already have a better setup than I do to drop into.
I'm debating if I should wait on an 80e swap or just run my 60e, that and some misc. odds and ends (you know.. couple grand of odds and ends
) are all that's holding it up.
I had the heads milled .030. I'm shooting for ~11:1 compression on this motor.
I'm debating if I should wait on an 80e swap or just run my 60e, that and some misc. odds and ends (you know.. couple grand of odds and ends
) are all that's holding it up. I had the heads milled .030. I'm shooting for ~11:1 compression on this motor.
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03-08-2012, 01:07 PM
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03-09-2012, 04:55 PM
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224s a pretty mild cam for the 6.0s, good numbers none the less tho.
Would love to hear what you hit with the new cam.
03-10-2012, 07:49 PM
#20
I had a LQ4 shortblock with TSP Stage 2.5 LS6 heads and LS6 intake in my old WS6. Pat G spec'd me a cam for it....238/242, .604/.605 lift on a 112+4. Very streetable, and rolled out. No dyno #s or track times, though...
Here's a clip. Cutout opens around 35 seconds in...
Here's a clip. Cutout opens around 35 seconds in...