N/A 370ci dyno results.......sorta
09-11-2009, 09:22 AM
#1
N/A 370ci dyno results.......sorta The dyno's weather station wasn't working at all and wouldn't SAE correct the pulls, so all I have are uncorrected numbers. Weather was 83*F, 30.01" barom, 68% humidity. The dyno totally puked and quit reading entirely before I had a chance to spray it so had to quit early. Will try again when it gets fixed, and actually get some graphs.
Best uncorrected pull was 473hp/426tq.....SAE corrected (based on my math since dyno died) is 495hp/446tq. Can anyone verify I did the correction right for the given weather conditions? This is on a dynojet dyno if it matters. Don't know how much faith to put in the #s with all the problems the dyno was having, but I think it *should* be pretty close based on my race weight and corrected trap speeds (3900lbs, 120mph in 2700ft DA). Pulls were from 2500-7000rpm.
Engine:
370ci (12:1 scr, 8.7:1 dcr)
prc 5.3 heads
custom cam
ported Fast 92/92, direct port nitrous 200 shot
1 3/4" pacesetters, 3" duals, 1 chamber flowmasters
asp crank pulley
Drivetrain:
stock flywheel, spec 3 clutch
built t56
3" strange steel drive shaft
moser 9", 35 spline axles, 4.33 gears, detroit locker
15x10" prostars, 325/50/15 MT radials
http://s85.photobucket.com/albums/k5...rrent=dyno.flv
Best uncorrected pull was 473hp/426tq.....SAE corrected (based on my math since dyno died) is 495hp/446tq. Can anyone verify I did the correction right for the given weather conditions? This is on a dynojet dyno if it matters. Don't know how much faith to put in the #s with all the problems the dyno was having, but I think it *should* be pretty close based on my race weight and corrected trap speeds (3900lbs, 120mph in 2700ft DA). Pulls were from 2500-7000rpm.
Engine:
370ci (12:1 scr, 8.7:1 dcr)
prc 5.3 heads
custom cam
ported Fast 92/92, direct port nitrous 200 shot
1 3/4" pacesetters, 3" duals, 1 chamber flowmasters
asp crank pulley
Drivetrain:
stock flywheel, spec 3 clutch
built t56
3" strange steel drive shaft
moser 9", 35 spline axles, 4.33 gears, detroit locker
15x10" prostars, 325/50/15 MT radials
http://s85.photobucket.com/albums/k5...rrent=dyno.flv
What are you hoping it will run? 
09-12-2009, 06:43 PM
#7
Yeah I figure it'd be pretty quick at a decent race weight, but this car is too nice to cut/gut just to go a lil faster.......that's what the nitrous if for.
Thanks! I'm in Topeka.
It's a full weight '98 car (steel gas tank). Only things removed are ABS, EGR, AIR, windshield washer tank and spare tire/jack. Only real weight reduction is wheels/tires. Things added:
-iron block
-6pt cage, mild steel
-spohn sfc's, full length adj tq arm, lca's, phb, ds loop.....all mild steel
-moser 9", nodular iron center, 35 spline, detroit locker
-3" steel drive shaft
-nitrous system
-standalone fuel system for nitrous
-I weigh 215lbs
-3900lb was with me and half tank of fuel
Thanks! I'm in Topeka.
It's a full weight '98 car (steel gas tank). Only things removed are ABS, EGR, AIR, windshield washer tank and spare tire/jack. Only real weight reduction is wheels/tires. Things added:
-iron block
-6pt cage, mild steel
-spohn sfc's, full length adj tq arm, lca's, phb, ds loop.....all mild steel
-moser 9", nodular iron center, 35 spline, detroit locker
-3" steel drive shaft
-nitrous system
-standalone fuel system for nitrous
-I weigh 215lbs
-3900lb was with me and half tank of fuel
Last edited by jmm98LS1; 09-12-2009 at 06:49 PM.
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09-12-2009, 07:14 PM
#8
Yeah I figure it'd be pretty quick at a decent race weight, but this car is too nice to cut/gut just to go a lil faster.......that's what the nitrous if for.
Thanks! I'm in Topeka.
It's a full weight '98 car (steel gas tank). Only things removed are ABS, EGR, AIR, windshield washer tank and spare tire/jack. Only real weight reduction is wheels/tires. Things added:
-iron block
-6pt cage, mild steel
-spohn sfc's, full length adj tq arm, lca's, phb, ds loop.....all mild steel
-moser 9", nodular iron center, 35 spline, detroit locker
-3" steel drive shaft
-nitrous system
-standalone fuel system for nitrous
-I weigh 215lbs
-3900lb was with me and half tank of fuel
Thanks! I'm in Topeka.
It's a full weight '98 car (steel gas tank). Only things removed are ABS, EGR, AIR, windshield washer tank and spare tire/jack. Only real weight reduction is wheels/tires. Things added:
-iron block
-6pt cage, mild steel
-spohn sfc's, full length adj tq arm, lca's, phb, ds loop.....all mild steel
-moser 9", nodular iron center, 35 spline, detroit locker
-3" steel drive shaft
-nitrous system
-standalone fuel system for nitrous
-I weigh 215lbs
-3900lb was with me and half tank of fuel
thats not bad sell me your moser and buy an aluminum one
09-13-2009, 06:04 PM
#10
Cam is upper 240's intake / mid 250's exhaust with under .625" lift on both sides. Cut on 110lsa, 107icl. It peaked at 6500rpm and carried flat to ~6800 before it fell off. Idles at 1000rpm, video of it in my sig. Once I get back on for some nitrous pulls I'll get some graphs to post up.
09-14-2009, 11:05 AM
#13
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Your SAE correction looks spot on.
Quick calculation shows 496/447. But, I dropped a few decimal points..so your numbers look accurate.
Good work!
..WeathermanShawn..
Quick calculation shows 496/447. But, I dropped a few decimal points..so your numbers look accurate.
Good work!
..WeathermanShawn..
09-14-2009, 01:16 PM
#15
I can't wait to see numbers from that thing when you spray it.
Oh, and side-note, i'm going to have to flycut my pistons. With a .052 gasket, my intake ptv is .035 . Minus the .012 for the .040 cometics, and I'm left with .023 intake PTV.
You don't know anyone with a cutter tool do you? or maybe a ~2.05 valve I could use to make a tool?
Oh, and side-note, i'm going to have to flycut my pistons. With a .052 gasket, my intake ptv is .035 . Minus the .012 for the .040 cometics, and I'm left with .023 intake PTV. You don't know anyone with a cutter tool do you? or maybe a ~2.05 valve I could use to make a tool?
