PILOT BUSHING 69 DODGE 318 NP 435

Slammin69 · Post by **Slammin69** » Wed Mar 29, 2006 7:15 pm

Hello I am converting my 69 dodge truck from an automatic transmission to a new process 435 manual. My queation is why is my pilot bushing too big for the crankshaft? The part number is the same everywhere i go but some how it is about 40 thousanddths of an inch too big. The motor is a 69 dodge 318 and the tranny is from an 81 pickup with the same motor ,thanks for your help ppl.

JAMESYBOY

Post by **FredM** » Wed Mar 29, 2006 8:49 pm

sounds like you have a engine that was built for an automatic trans
They didn't drill the crank for the auto so the hole is smaller.

the option is to get a bushing that fits in the back of the crank like the hub on a tork coverter.
bad part is that you will have to cut the end of the pilot shaft on the trans off by about 1" or drill out the crank some

Post by **Goldie** » Wed Mar 29, 2006 9:46 pm

I didn't know there were 2 different cranks for each eng. I learn something every time I log on. It does seem like a lot of fuss though. Goldie

digdoug · Post by **digdoug** » Wed Mar 29, 2006 11:05 pm

Get a good quality 29/32" bit and drill out the hole in the end of the crank. Be prepared to spend @ $20.00.Hold on and watch those knuckles.

Post by **FredM** » Wed Mar 29, 2006 11:19 pm

Goldie,
I had that learning experiance in about 69
with a 383 and 4spd in my 65 Cornet
did an engine swap and it wouldn't work
with an automatic built engine

Slammin69 · Post by **Slammin69** » Wed Mar 29, 2006 11:41 pm

Im really not too keen on drilling the crank for the fact that I might screw it up. Am I wrong to think i could machine down the bigger bushing and use it instead of changing the crank>? oh yeah i for got to ask how far in the crankshaft should the pilot bushing be? because the hole has two different inside diameters it seems to taper down further in the hole. Im getting further in the hole the more i pursue this tranny swap lol oh well.Your advice is really appreciated everyone ,thanks.

Post by **Hobcobble** » Thu Mar 30, 2006 7:55 am

I suppose you could knock .040 off the outside of
a pilot shaft bushing but I'd have to question its
longevity

. Maybe a good repair garage
or a reputable machine shop could steer you straight
on this.
John

Post by **FredM** » Thu Mar 30, 2006 8:16 am

any one have the part number for the pilot bushing that sets in the back of the crank where the hub to a tork converter sets?

with that you cut the end of the trans input shaft off (about 1")