HP guestimates of new combo
03-01-2011, 12:32 PM
#1
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HP guestimates of new combo Im building a new motor for the season and wanted to see what the LS pros think.
NEW COMBO:
365ci (.005over) iron block
LS3 heads
12.5 to 1 compression
K1 rods
Victor JR single plane
Full length headers 1 3/4-1 7/8 stepped headers
cam specs in progress
Holley 1000HP carb
MSD-6010 ignition
NEW COMBO:
365ci (.005over) iron block
LS3 heads
12.5 to 1 compression
K1 rods
Victor JR single plane
Full length headers 1 3/4-1 7/8 stepped headers
cam specs in progress
Holley 1000HP carb
MSD-6010 ignition
Last edited by Kwikcad500; 03-31-2011 at 10:00 AM.
03-01-2011, 02:52 PM
#5
Assuming he is using a automatic with a large converter, the dyno readings are not what you would think, you cannot go by dyno numbers asides from tuning purposes.
The track is where you can find the power output. A friend with a LS3 with cam and the works made 460 through a stalled auto, and every dyno will read different, so hence the reason i say "give or take".
The track is where you can find the power output. A friend with a LS3 with cam and the works made 460 through a stalled auto, and every dyno will read different, so hence the reason i say "give or take".
03-01-2011, 02:53 PM
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Trans is a T400 but may be switching to a T350 this year, I was hoping for 500 to the wheels on a dynojet. The last combo was a junkyard LQ4 with untouched 243's, mild cam, headers with a Wegner single plane and made 400hp to the wheels with a badly slipping converter, T400 and 4.10 gears with Hoosier Quick Time Pro's D.O.T(slicks with grooves) on a Dyno Jet. I replace the converter with a 4000stall unit and the car picked up half a second in the 1/4 along with 1.56 60ft. Anyway back to my new combo...I Havent milled the heads yet but i am thinking about it. Ive got a custom cam coming from on of the sponsors(not sure if its ok to say who it is though). I do not have cam specs as of yet but it will be taylored to the combo.
03-01-2011, 03:00 PM
#7
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I use the chassis dyno for tuning purposes and finalize my tune at the track for different weather conditions. Ran a best of 11.53 last year with the junkyard combo in a 4000lb car and was very surprized it ran like it did. Probably going to an electric w/p this year to freeup some extra HP too.
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03-02-2011, 07:46 AM
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The 10" 4000 stall converter will probably not be able to be used. Im waiting on cam specs for that but it will probably be 5000+ and the combo will be on race gas for a while then E-85 or Methanol. Im gonna have the Jr flowed on a bench.
03-04-2011, 03:50 PM
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03-31-2011, 09:33 AM
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Decided to go more agressive on the cam selection. Compression will be bumped to 12.5 from 12 to 1. Its going to be around 250* @ .050 on a 110 or 112 LSA. Leaning towards the 112, I had great results with my Catherdal port LQ4 pump gas motor last season using a 112 LSA in my heavy Coupe Deville. I think average across the board HP and TQ numbers are more important in my combo than peak numbers. I need to get from point A to point B as quick as possibe.
03-31-2011, 09:55 AM
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I have yet to pull the trigger on the cam but i plan to spin it to 7500, the heads have enough air to go 8000+ but i dont want to spin it that high, ide like the motor to live for a while. I'll be using race gas but i plan on experimenting with E85/98. Ive been talking to a couple different cam guys but undecided at the moment. Its still a cast crank and im sticking with the stock rockers. The converter will be a 4700-5000 8". Will more than likely be an 8* split. Any input is welcome......
03-31-2011, 09:56 AM
#19
I have yet to pull the trigger on the cam but i plan to spin it to 7500, the heads have enough air to go 8000+ but i dont want to spin it than high, ide like the motor to live for a while. Ive been talking to a couple different cam guys but undecided at the moment. Its still a cast crank and im sticking with the stock rockers. The converter will be a 4700-5000 8". Will more than likely be an 8* split. Any input is welcome......
