Nice job.........would be nice to see under a budget ... what would it take to sneak another 100HP out of this bad boy .........
What vacuum does it pull at idle ??
Any work done to the Performer Manifold? I wonder how it would respond to a Performer RPM.
My friends 70 Duster makes almost the same power, we have driven it to the track with 3:55 gears and a 3000 stall and ran 13:20 on small drag radials, full weight car other than a fibreglass hood.This is good stuff, great work. More dyno! So now with what you see this motor putting out and how it does it, for a 3300+/- lb auto vehicle, what torque converter and gearing would you say (or others) would be ideal??
Good to know, I'm using a Howards cam similar to the Comp 270h, Isky 270 mega, with 1.6 rockers and a gasket matched Weiand Action, likely a Street Demon, ported EQ heads all else about the same (cubes, CR, etc).3300 lb A100 van w/3.73 gear, still need to settle on TC. Goal is high 12's. Great thread, jacked to get the ball really rolling on my build!My friends 70 Duster makes almost the same power, we have driven it to the track with 3:55 gears and a 3000 stall and ran 13:20 on small drag radials, full weight car other than a fibreglass hood.
Thank you J. Rob
13.2s are a PW of .080 at a race weight of 3300 that is 3300x .080=264 hp required. if you lost a half second due to chassis set-up, it would be .089, and .089x3300 =294 hpMy friends 70 Duster makes almost the same power, we have driven it to the track with 3:55 gears and a 3000 stall and ran 13:20 on small drag radials, full weight car other than a fibreglass hood.
13.2s are a PW of .080 at a race weight of 3300 that is 3300x .080=264 hp required. if you lost a half second due to chassis set-up, it would be .089, and .089x3300 =294 hp
Just saying
It's a street car not set up for drag racing, and it runs exactly what I would expect it to.13.2s are a PW of .080 at a race weight of 3300 that is 3300x .080=264 hp required. if you lost a half second due to chassis set-up, it would be .089, and .089x3300 =294 hp
Just saying
13.2s are a PW of .080 at a race weight of 3300 that is 3300x .080=264 hp required. if you lost a half second due to chassis set-up, it would be .089, and .089x3300 =294 hp
Just saying
At 400 hp, that is 400/3300= .121 pw, and should go 11.6 with unlimited chassis. Add a half second for street chassis and you get 12.1seconds
But ET is deceptive; better yardstick for power is the trap speed.
At 3300 pounds;400 hp should go 115 mph,294 should go 103,and 264 should go 99.
My 344 hp Dyno tested 340 went 12:20 in a Scamp set up for drag racing.....same engine went 13:30 in my 74 Challenger street car. The car set up is a huge factor....Years ago I had a dyno verified 381hp , 360 that I went 12.5's @ 3500lb F-body @ 108 mph. J.Rob
My retirement dream. After moving to Alabama.
I'm a little surprised with the torque as well. I figured 420-425 ft/lbs at peak and I would be happy. It should move the E-body just fine. J.Rob
Just remember the Dyno give you CORRECTED HP numbers.....corrected for perfect air.......Now where in the hell in this country does a racer find perfect air...so the actual HP is going to be less in the car....
Also the engine does not run down the track at PEAK HP rpm...it has to launch ,,,rpm has to come up...shift ..the rpm gets dragged down to converter stall or thereabouts...and the rpm must accelerate and shift again...so usually plugging in the peak hp will not give you a correct et or mph....Plugging in the peak hp will give you a Fantasy ET...
It's a street car not set up for drag racing, and it runs exactly what I would expect it to.
I personally wouldn't use et to calculate horsepower..... but everyone I know always asks the same thing.... how much horsepower does it take to run a certain etStop using ET to calculate HP.
MPH is HP and ET is HOOK. If an A body makes 400 HP I don't care if it hooks or not, it will run a MPH commensurate with its HP.
I personally wouldn't use et to calculate horsepower..... but everyone I know always asks the same thing.... how much horsepower does it take to run a certain et
This was a hot oil, cold water, clean cold air dyno pull. I love showing these types of pulls to the 383 Chev guys and tell them its a stock stroke 360. J.Rob
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You are right, it does take a certain HP to run a certain ET. I just don't use ET to verify HP. I use MPH. Then I look at ET to tell me how well it's hooking.
An example is a car that runs 12.46 at 109.87 MPH. It's making enough power to go low 12's or even dip into the 11's.
Car B runs 12.46 at 104.50. We can say car B is pretty well sorted out. It's ET and MPH match fairly close.
Car C runs 12.46 and 118.23 MPH. We know that pig didn't hook at all, and he needs to work on chassis.
ET and MPh go together but MPH is HP and ET is hook. Too many bracket racers have made HP obsolete in their minds. The best bracket racers pay attention to MPH.
Bring back MODIFIED Eliminator.
Hey! Be Nice! 'Cause when a Mopar guy builds his first pump gas 383 Chevy for a friends 4x4 truck, it just might make 484 LB-FT and 518 HP.
Hey, I got these numbers straight from the Direct Connection Bulletin #40. They were empirically collected and amassed by Chrysler engineers and racing teams in the 60s and early 70s. I don't question their data. Those guys were waaay smarter than me.