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#1
05-15-2020, 12:06 PM
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the NHRA Pro Stock records are
1970 144.48 mph 1971 146.10 mph 1972 149.50 mph I put 700 hp and 3010 lbs in the calculator and came back with ... Your ET / MPH computed from your vehicle weight of 3010 pounds and HP of 700 is 9.47 seconds and MPH of 142.68 MPH. 
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#2
05-15-2020, 12:14 PM
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Quote:
Take a look at this MPH calculator its close. http://www.wallaceracing.com/et-hp-mph.php I get 707 HP for 145 MPH @ 3010, big power back in 1970! Last edited by Vortecpro; 05-15-2020 at 12:18 PM.
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#3
05-15-2020, 12:35 PM
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Joe and Mark, one main issue is that the MMPS and "Match races" were not at 3000+ lbs? They took the weights out, used bigger engines and ran them! This why the 1970 times were 9.90 or there abouts and the Match racers were around 9.40's.
Don't forget that most of the cars in 72 were small blocks and lighter, not the 3000+ lbs like the 70/71 years. So to use the 144+ MPH is NOT the 427430 inch motors? These were the match race 490/500+ inchers that ran light. Just putting the MPH/Weight ratio into prospective.
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#4
05-15-2020, 01:52 PM
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DragList shows numbers for "Pro Stock Classic" with a 430 cu in limit and "Pro Stock Mountain" with a 500 cu in limit
I was using the record numbers for PS Classic example for 1971 they show ... PS Classic 1971 Records: 1/4 Mile: 9.485 ET, 146.10 MPH PS Mountain 1971 Records: 1/4 Mile: 9.265 ET, 149.76 MPH
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#5
05-15-2020, 02:01 PM
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its difficult to keep track of all the rules as they changed them a few times
here is a one quote ... "In 1982, the NHRA did away with the weight break system and implemented a 2,350 pound minimum weight, 500 cubic inch maximum rule across the board, due to the popularity of the Mountain Motor IHRA Pro Stock cars, which have unlimited displacement." I remember reading that the engine displacement was well over 500 cu in with the tall deck blocks. At one time they called them "car blocks" and "truck blocks" and the tall deck blocks had to carry a 100 pound weight penalty in 1972 some people were still running 1969 Camaros as you can run a car up to 3 years old Last edited by JoeC; 05-15-2020 at 02:07 PM.
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