1970 mopar 440-375

GTX JOHN · 12-30-2015, 08:13 PM

For that several years NHRA has factored the body style and individual engine
together rather than just the engine in general. They feel performance is linked
to chassis and aerodynamics and well as engine output.

This has made for some interesting changes = My Aspen Wagon rerated to
a FULL 19 More horsepower than a 2 Door sedan with the same 360. ( Try carrying
230 Lbs. more than all the guys next to you in Class Elims. with same combo.....You
will look like a Idiot!)

Who would of guessed that the long roof / longer wheelbase / Big roof rack
would have generated that much more power and give me SUCH a Advantage!

After pushing our Wagon to the back of shop....We put the running gear in a Dodge Pickup at 39 LESS Horsepower
with a much bigger cam and more compression if we had chosen to use it ( we did not use it).

We set the National Record the first time out and ran 1.30 plus in bracket mode with the worse worn out engine we owned
instead of being a bottom feeder on the ladder and first round class runner up.

We went from Idiots to Experts with a single broad stroke of the NHRA pencil !! = In class we could wait for the green and beat
guys who had worked their butts off for years to get their combinations to work.

Not particularly proud of myself..........Unfortunately, That is how to game is played the last few years AND that is the new reality!

Irving Family Racing

N/SA 1/8 and 1/4 National Record Holders 2009 - 2010

O/SA 1/8 and 1/4 National Record Holders 2010 - 2012

GTX JOHN · 12-30-2015, 08:34 PM

To answer your original question: Challenger and Coronet:

Challenger is 1/2 foot shorter Wheelbase than Coronet

Challenger has a glass off hood compared to steel.

Challenger has a good ram Air Scoop over Carb.
(Coronet has useless cosmetic scoops)

Challenger has much smaller frontal area
and better windshield angle.

Both car exact same suspension front and back.

Hum: Challenger should be 13 less horsepower!

Melvin: Makes perfect sense to you now?

impstocker · 12-30-2015, 09:13 PM

I have been running the Chevy 396/325HP in Impala's (1968 now 1965) NHRA factored at 325. Just found out same motor, same heads, intake, carb ect is rated at only 320 HP in 1966-1969 Chevelle's? Bigger engine bay in my car maybe worth that 5 HP added? oh, but the Carmaro's 1967-1969 rated at 325 too!

I am asking for the reduction , worth 60 lbs in my Impala. I would then go from 4070 lbs to 4010 in I/SA

Will Lamprecht I/SA 65 Imp in progress debut 2016 Div 1

12-30-2015, 08:13 PM	#1
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,736 Likes: 2,808 Liked 2,488 Times in 698 Posts	Re: 1970 mopar 440-375 For that several years NHRA has factored the body style and individual engine together rather than just the engine in general. They feel performance is linked to chassis and aerodynamics and well as engine output. This has made for some interesting changes = My Aspen Wagon rerated to a FULL 19 More horsepower than a 2 Door sedan with the same 360. ( Try carrying 230 Lbs. more than all the guys next to you in Class Elims. with same combo.....You will look like a Idiot!) Who would of guessed that the long roof / longer wheelbase / Big roof rack would have generated that much more power and give me SUCH a Advantage! After pushing our Wagon to the back of shop....We put the running gear in a Dodge Pickup at 39 LESS Horsepower with a much bigger cam and more compression if we had chosen to use it ( we did not use it). We set the National Record the first time out and ran 1.30 plus in bracket mode with the worse worn out engine we owned instead of being a bottom feeder on the ladder and first round class runner up. We went from Idiots to Experts with a single broad stroke of the NHRA pencil !! = In class we could wait for the green and beat guys who had worked their butts off for years to get their combinations to work. Not particularly proud of myself..........Unfortunately, That is how to game is played the last few years AND that is the new reality! Irving Family Racing N/SA 1/8 and 1/4 National Record Holders 2009 - 2010 O/SA 1/8 and 1/4 National Record Holders 2010 - 2012 __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 12-30-2015 at 08:51 PM.

12-30-2015, 08:34 PM	#2
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,736 Likes: 2,808 Liked 2,488 Times in 698 Posts	Re: 1970 mopar 440-375 To answer your original question: Challenger and Coronet: Challenger is 1/2 foot shorter Wheelbase than Coronet Challenger has a glass off hood compared to steel. Challenger has a good ram Air Scoop over Carb. (Coronet has useless cosmetic scoops) Challenger has much smaller frontal area and better windshield angle. Both car exact same suspension front and back. Hum: Challenger should be 13 less horsepower! Melvin: Makes perfect sense to you now? __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 12-30-2015 at 08:57 PM.

12-30-2015, 09:13 PM	#3
impstocker Member Join Date: Dec 2008 Location: Wingdale, NY Posts: 302 Likes: 27 Liked 53 Times in 16 Posts	Re: 1970 mopar 440-375 I have been running the Chevy 396/325HP in Impala's (1968 now 1965) NHRA factored at 325. Just found out same motor, same heads, intake, carb ect is rated at only 320 HP in 1966-1969 Chevelle's? Bigger engine bay in my car maybe worth that 5 HP added? oh, but the Carmaro's 1967-1969 rated at 325 too! I am asking for the reduction , worth 60 lbs in my Impala. I would then go from 4070 lbs to 4010 in I/SA Will Lamprecht I/SA 65 Imp in progress debut 2016 Div 1

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