4x4 engine perch differences?

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green68250
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4x4 engine perch differences?

Post by green68250 »

Are there any differences between the engine perches for a 400 vs. a 390 in a '77 F-250 4x4?

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Corbin
Honestly, I really would rather push a Ford than drive a Chevy.

1969 F-100 4x4 Dana 44 w/ disk brakes and power steering conversion 390 c6 np205.
1970 F-250 97k original miles bone stock 390 np435 most original unmolested truck I have ever owned.
2001 F-250, Extra Cab, 4x4, 7.3 Direct Injected Turbo Diesel, Edge Programmer, Flowmaster 4" Turbo back Exhaust, 3" Leveling Kit with 33" Goodyear Wrangler DuraTracs, and has 250,000 miles and counting.
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averagef250
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Re: 4x4 engine perch differences?

Post by averagef250 »

there weren't 360/390 perches in a 77 f250 4x4. 76 was the last year of the FE. The frame rail hole locations changed from 76-77 for the new 351m/400 and the frame stands are about an inch shorter for the new engines.

If you find a pair of 67-76 FE/300 six frame stands you can put them on the frame in the right spot and about 3 of the 6 holes will bolt up. You will have to drill the other 3 holes on each side.
1970 F-250 4x4 original Willock swivel frame chassis '93 5.9 Cummins/Getrag/NP205/HP60/D70
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