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Aug 20, 2003 | 03:13 PM

Vernon

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Transmission

I have a 65 f100 with a 390, and i was wondering if it was possible to bolt a 351 c trans onto the 390 block. Also if anyone knew how to tell what kind of transmission it is. it came out of a 1973 mustang with the 351 c.

thanks,

Aug 20, 2003 | 09:08 PM

johnsalterego

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From: Dallas/Fort Worth

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Cleveland's use Windsor style tranny and motor mounts, it won't fit behind your 390. Is the case made of steel? if so it's probably an FMX; if the bellhousing and tranny are aluminum it's probably either a C4 or a C6 (C4 would be more likely...) The C4 is smaller and the bellhousing is a separate piece; C6's are pretty big overall and the bellhousing/case are all one piece.

Aug 21, 2003 | 01:15 AM

Vernon

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Thanks for the info. I believe it's an FMX. i also have an optional 460 auto trans. My current standard transmission works great except i was told that an automatic would be more efficient. thanks again, john

Aug 21, 2003 | 11:47 PM

jrsroadhauze

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As nice as the C6 is it will gobble up 60hp. C4's are less, like 20hp except it will cost you a bundle to get one for the FE motor.....keep the stick and be happy

Aug 22, 2003 | 01:49 AM

Vernon

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Alright i understand, I was wondering if the fmx trans would rob horsepower. Also i have a truck automatic transmission from a 460. If that won't work i was wondering what i can do to make the shifting on my standard trans more smooth or create a shorter throw. The gears are so low it's hard to get the type of performance i'm looking for. Thank you again,

Aug 22, 2003 | 08:07 AM

jrsroadhauze

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So, do you have the 4 spd with granny first or a 3 on the tree. Ford made a very strong 3 spd for the 390 trucks. A toploader like the T-1o 4 spd in the musle cars, I'm using this 3 spd behind a 406 in my model A with a hurst floor. Who needs a 4 spd. with 500 foot pounds of torque. Ford also made a 3spd with overdrive for its 390 powered cars of the 60s. If you dont like to shift use the C-6. I'm runnin one in my 76 F-250 supercab with a 390. It has the tow and go upgrade to the tranny. Nice firm shifts

Aug 25, 2003 | 09:13 PM

Vernon

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i posted a reply but it didn't show. I have a 4 speed with the granny gear. like i said before, i have an option to put a 3 spd automatic into it that was bolted onto a 460. how would i be able to tell what kind of trans it is? thank you.