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LY6 TSP 231/236 still low dyno number

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Old 12-13-2014, 12:10 AM
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Stock L92 injectors? They are only like 33lb. I'd say you need more fuel. Idk though. I'm not a expert. Although it's depressing me, I'm afraid when I get mine done, I will make under 400.

I've seen some guys make 370wheel with full bolt ons.
Old 12-13-2014, 11:16 AM
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Originally Posted by 81s
Ok Here's the rundown.

6.0 .015 over katech forged pistons and Arp rodbolts
823 heads lightly ported
Texas Speed 231/236 .641 .631 113lsa
Prc 650s spring 7.4 pushrods
L92 intake factory inj nw 92mm cable tb
Circle d 3600 stall 4l80e trans
4" cold air with ls7 maf
4.10 gear

I dynoed today at 381.9 rwhp. Though id be around 450whp.. any ideas?
Oh head3rs are schnoenfeld lts and 3" with dynomax bullets and ultraflows
compression?
what size headers?
fuel used?
what size wheels and tires on the rear?
Old 12-13-2014, 03:44 PM
  #23  
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Originally Posted by ScreamingL
compression?
what size headers?
fuel used?
what size wheels and tires on the rear?
I believe the compression is around 10. Its Ls3/l92 undecked.
93 octane
x275 pro mickeys
headers are schnoenfeld swap headers. 1 3/4 3inch collector
Old 12-13-2014, 03:47 PM
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Track results if I didnt post....
7.82@89.7 mph 1/8 mile
Old 12-13-2014, 06:31 PM
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Headers are small for that head/motor combo

On a 6.0 I did...we went from a ls6 intake and tb, 13/4 headers with 2.75 y pipe into single 3"

To fast 102/102, 1 7/8 headers with dual 3" into single 4"
Dual 4" air intake and gained 60/60 thru a 4000 stalled auto

410/350 to 470/410
Old 12-13-2014, 07:06 PM
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I've seen a 50% difference in power dyno to dyno...take all dyno numbers with a block of salt...
Old 12-15-2014, 08:03 AM
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Like said above, don't be too concerned over numbers.

Do you know the timing? AFR? Is the converter locked? How high were they turning it? With that cam and heads you should really have to turn it to peak out the power.
Old 12-16-2014, 11:59 AM
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380rw through a stalled 4L80e w/ 4.10s.....that's not bad for a cam only 6.0L with L92 heads.

Manual LS3 Cars make 460ish rwhp with that same cam and they have much more compression that you do, and much less drive-train loss. I think your numbers are where they should be considering what you have.

If the numbers mean that much to you, get it on another dyno. If it feels strong and runs the numbers at the track, I wouldn't be concerned.

Last edited by Sales4@Texas-Speed; 12-16-2014 at 02:19 PM.
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