408 Dyno Tune Results
#1
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408 Dyno Tune Results
TSP 408ci 11.5:1
PRC LS3 heads
TSP LS7S cam
Stock LS3 intake
SLP u/d pulley
1 7/8 long tubes with TSP x-pipe
Stock 10 bolt
6 speed
SAE corrected on a dynojet at Arizona Dyno Chip
Speed Density Tune by Nic D
PRC LS3 heads
TSP LS7S cam
Stock LS3 intake
SLP u/d pulley
1 7/8 long tubes with TSP x-pipe
Stock 10 bolt
6 speed
SAE corrected on a dynojet at Arizona Dyno Chip
Speed Density Tune by Nic D
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#10
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up my 418 levels off at about 6200 and 540 is a bit high for a 408 most I see dyno around 500 even.
it is also about the car setup and the type of car. the GTO I pulled my motor out of put down 505 but in my car it will do about 535 or more. one reason is I hav a lighter than stock flywheel but that is countered with a 9 inch. anything near or at 500 or over is a good build for a 408
it is also about the car setup and the type of car. the GTO I pulled my motor out of put down 505 but in my car it will do about 535 or more. one reason is I hav a lighter than stock flywheel but that is countered with a 9 inch. anything near or at 500 or over is a good build for a 408
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up my 418 levels off at about 6200 and 540 is a bit high for a 408 most I see dyno around 500 even.
it is also about the car setup and the type of car. the GTO I pulled my motor out of put down 505 but in my car it will do about 535 or more. one reason is I hav a lighter than stock flywheel but that is countered with a 9 inch. anything near or at 500 or over is a good build for a 408
it is also about the car setup and the type of car. the GTO I pulled my motor out of put down 505 but in my car it will do about 535 or more. one reason is I hav a lighter than stock flywheel but that is countered with a 9 inch. anything near or at 500 or over is a good build for a 408
Looking at the graph, I wonder if the intake or some restriction is holding you back. Your curve is flat at the end, seems like it needs a little something to peak at the end.
Last edited by ExceSSive; 01-18-2012 at 06:58 AM.
#14
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The results are good. I had the same first build on my 402ci. ls3/l92 head,ect. I went to the trickflow 235 head wich took my compression from 11.7 to 11.5. I gained 20hp under the curve,10hp on peak and 15 tq from start to finish. I then had mammo port my 102mm and went with a pat g cam and gained 15hp again. The cam pat did was a lil smaller in duration but more lift. just from a out of the box fast and the 235 heads i gained 3 tenths at the track with a worse 60foot. from 1.42 to a 1.54 with tfs heads (slicks were worn bad) my 402ci had 545hp and runs mid 10,s n/a in a car i can daily with power everything still in it. I also have a 12bolt and steel shaft w/4.11's m6 car.
Last edited by mike c.; 01-19-2012 at 08:24 PM.
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Injectors are stock LS3 42 pounders. And pretty happy with the numbers seeing the fact that the throttle body is only opening up 90%. I'm having issues with the SLP bracket for the throttle body cable. Come summer time I'll swap to a bigger injector and switch over to E-85 and see how she does.
Last edited by 02CETA1850; 01-22-2012 at 01:41 AM.