Headers for an odd pair...

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Jul 21, 2009 | 12:35 PM

clean76rideman

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Headers for an odd pair...

I have a 76 F-100 raised about 8 inches. It has a C-9 4x4 tranny with a, You ready?, 351 w. Yeah a 351 windsor. Completely rebuilt. (The way i got it....

) Problem is, the headers I have (dont know if they were bought for a 302 or a 351m) wont fit because if the starter on the tranny. Are their any long flow headers that will fit or am i forced to use shorties?

Jul 21, 2009 | 12:37 PM

Holiver31

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C9 transmission? You mean C6 right?

Jul 21, 2009 | 12:44 PM

clean76rideman

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The number on the case is c96391 with a little ak6 below it.

Last edited by clean76rideman; Jul 21, 2009 at 12:46 PM. Reason: additional info.

Jul 21, 2009 | 12:55 PM

Holiver31

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Never heard of a C9 before. I have heard of C4 variants being called C(insert number here). Anyone else know? sorry for the thread hijack. I'm just curious.

Jul 21, 2009 | 01:07 PM

Furyus1

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A quick search on C96391 came up with this being an NP435 4-speed, but I could be wrong...

Jul 21, 2009 | 01:22 PM

75F350

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That number comes up as an NP435 for me too:

C96391:

FORD NEW PROCESS NP435 4 SPEED:
The NP435 transmission can be identified by a case length of 10.875" and a case casting number of C95711, C96391, or
C13894. The aluminum shift cover has a casting number of C11240, C97233 or C994569.

Identification
This transmission is 10.8" long and features an aluminum top cover that is retained by eight bolts. The NP435 case is of cast iron.
The Ford NP435 has a 1-1/16" diameter, ten spline input shaft that has a stick-out of 6-1/2" from the front face of the transmission. The pilot tip of the transmission measures .668". The front bearing retainer flange measures 4.850" and the bearing retainer tube is 1.430" in diameter. The front bolt pattern is the symmetrical Ford "butterfly" pattern; roughly 8-1/2" wide by 6-5/16" tall. The input shaft stick-out length is 6-1/2".

Interestingly enough., we have to ask about the actual header clearance. How far, or how much of a problem is this? Super tight and there is no way to get a stater in there or would a small, "mini starter" provide the clearance you need?

Jul 21, 2009 | 02:19 PM

427 fordman

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Is it just one tube or more? If its just one or maybe 2 I'd just cut apart and re-route(being careful not to mess the length up). Been there, done that. Works good