Replacement Bolt Size (300 I-6 and NP435)
 

Can anyone tell me what size bolts connect the bell housing of the I-6 to the transmission. In my case the
tranny is an NP435 (4 speed manual, granny low). Several of the bolts appear missing and I don't want to remove the one that I can find to measure it.

Thanks

Replacement Bolt Size (300 I-6 and NP435)
 

I have the same set up, I trying to remember it has been a while since I took em out. I think they were a 1/2 inch diameter shank about 2 or 2.5 inches long. Standard thread, hope this helps; oh don't be afraid to remove the bolts. The bellhousing has guidepins and the weight of the motor is pretty balanced so it isn't going anywhere. If it bothers you, you could support the front of the tranny with a floor jack when you take the bolts out.

Replacement Bolt Size (300 I-6 and NP435)
 

The top two are 1 1/2", other four are 2", all are 7/16 course thread.

Replacement Bolt Size (300 I-6 and NP435)
 

There you go, I couldn't remember right off, It's not very often that I have to work on my truck.

Replacement Bolt Size (300 I-6 and NP435)
 

Thank you :) I appreciate the help