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01-10-2023, 12:47 AM
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#1 |
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VIP Member
Join Date: Jun 2009
Location: Boulder City, Nevada 89005
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Re: 78 440 mopar
Same 440 engine in 73/74 is now 325 HP. (Factory 280)
We have a fresh ready to go engine 440/330HP on engine stand and will be trying it this year if we race. Basically 40 more CI and 31 more HP rated than our 400 now in our 73 400 Roadrunner that runs 1.00 + quite a bit more when we need to. Same Cam and heads etc. The compression is the problem in both of the combos but plenty of piston to valve clearance. We raced the 73/440 combo many years ago.
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John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 01-10-2023 at 10:28 PM. |
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01-10-2023, 08:27 PM
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#2 |
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Location: Black Creek, BC Canada
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Re: 78 440 mopar
I saw a 78 New Yorker for sale cheap with a pretty decent body so was curious. I see the factory HP was 195, NHRA factored to 345. I can see 345 being an issue, not much less than the earlier 440's with a decent compression ratio.
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Jim Mantle U/V/SA 6632 |
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01-10-2023, 10:30 PM
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#3 |
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Re: 78 440 mopar
Better combo is 73/73 B body440 @ 325 or 400 @ 294.
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John Irving 741 Stock 741 Super Stock |
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01-11-2023, 05:30 AM
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#4 | |
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Re: 78 440 mopar
Quote:
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01-11-2023, 09:30 PM
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#5 |
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Re: 78 440 mopar
Coronets are B Bodies.
1973 440 @ 325 would be OK
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John Irving 741 Stock 741 Super Stock |
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