Top 10 RWHP Per Cubic Inch NA?
05-04-2012, 08:24 PM
#41
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427 makes 607 rwhp. 1.42 hp per cube "4L80e transmission." I have a post around here some where. You tube dyno videos also. It started out with only 543 rwhp. Had the heads angle milled to 13.5 to 1 comp, fixed the Fast LS7 port miss-match and reported the manifold correctly by LS2 Portworks. Changed to a flowmaster merge vice ARH merge, and added a 4 inch cutout vice 3 inch. That got me the 607. I have to redyno now that I have added a vacuum pump and higher flowing cat converters...
Single plain would probalby pick up 40 rwhp with the heads I have and kick up to 1.5 hp per cube... Still that's a mello combo compared to the biggg boys on here.....
You mentioned more loss with a locked auto.... That's no kidding I lost 20 rwhp going from a manual t56 to a 4l60 with a locked converter. I was only making 400 rwhp at the time with my LT1 396 combo. Brain Tolley lost 40 rwhp (I believe) after he converted to auto (4l60e now at locked 599 rwhp...)
None of this really means poop without track ET/Mile an hour to back it up. My old 401 LT1 made 452 locked and ran 11.3's 3700lb race weight, at pinks. I'm sure with more than 150 more rwhp, low 10's should not be a problem..
jimbob
Single plain would probalby pick up 40 rwhp with the heads I have and kick up to 1.5 hp per cube... Still that's a mello combo compared to the biggg boys on here.....
You mentioned more loss with a locked auto.... That's no kidding I lost 20 rwhp going from a manual t56 to a 4l60 with a locked converter. I was only making 400 rwhp at the time with my LT1 396 combo. Brain Tolley lost 40 rwhp (I believe) after he converted to auto (4l60e now at locked 599 rwhp...)
None of this really means poop without track ET/Mile an hour to back it up. My old 401 LT1 made 452 locked and ran 11.3's 3700lb race weight, at pinks. I'm sure with more than 150 more rwhp, low 10's should not be a problem..
jimbob
Last edited by jimbob; 05-04-2012 at 09:46 PM.
well back in........ **** i cannot remember 05-06? i built my 402 made 502 at the wheels M6 3.89 9in 
05-05-2012, 08:17 PM
#44
427 makes 607 rwhp. 1.42 hp per cube "4L80e transmission." ... That got me the 607.
I have to redyno now that I have added a vacuum pump and higher flowing cat converters...
You mentioned more loss with a locked auto.... That's no kidding I lost 20 rwhp going from a manual t56 to a 4l60 with a locked converter. I was only making 400 rwhp at the time with my LT1 396 combo. Brain Tolley lost 40 rwhp (I believe) after he converted to auto (4l60e now at locked 599 rwhp...)
jimbob
I have to redyno now that I have added a vacuum pump and higher flowing cat converters...
You mentioned more loss with a locked auto.... That's no kidding I lost 20 rwhp going from a manual t56 to a 4l60 with a locked converter. I was only making 400 rwhp at the time with my LT1 396 combo. Brain Tolley lost 40 rwhp (I believe) after he converted to auto (4l60e now at locked 599 rwhp...)
jimbob
Could you post a link to the build and Dyno?
05-06-2012, 09:49 AM
#45
05-06-2012, 04:18 PM
#46
N/A 6.0L, worked L92 heads, worked VicJr and a big carb
648.4hp @ 7500 1.78hp/ci
526.8tq @ 5400
Land and Sea engine dyno
This combo has not been run at the track yet, soon.......
EDIT-, added Build detail post link: https://ls1tech.com/forums/carburete...gine-dyno.html
and track results - 10.91 @130 @ 3425lbs race weight (may 20 2012)
648.4hp @ 7500 1.78hp/ci
526.8tq @ 5400
Land and Sea engine dyno
This combo has not been run at the track yet, soon.......
EDIT-, added Build detail post link: https://ls1tech.com/forums/carburete...gine-dyno.html
and track results - 10.91 @130 @ 3425lbs race weight (may 20 2012)
Last edited by 3pedals; 05-22-2012 at 10:47 PM.
05-08-2012, 12:40 PM
#49
05-17-2012, 03:16 PM
#55
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01 Z28 afr210v2 heads ported fast 102, jph custom ground cam, built 4l60e with 3200 yank stall and full bolt ons, 10.87:1 compression. I made 459RWHP and 410 rwtq. Dyno shee can be found in my galley. 1.33 hp/cu.in.
05-19-2012, 07:46 AM
#56
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05-22-2012, 01:29 PM
#58
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96' Impala LT1 stock stroke .045 over
11.8:1 CR Hyd Roller passes CA emmisions
edelbrock shorty smog legal headers
Factory Z28 heads and manifold ported
thru A4 4L60E Edge converter unlocked
431RWHP SAE Dynapack backed up on Dynojet 488
431 / 357 = 1.207 HPpCube
11.8:1 CR Hyd Roller passes CA emmisions
edelbrock shorty smog legal headers
Factory Z28 heads and manifold ported
thru A4 4L60E Edge converter unlocked
431RWHP SAE Dynapack backed up on Dynojet 488
431 / 357 = 1.207 HPpCube