305E transmission swap
 

Has anyone ever swapped an OD transmission behind their big block V6? Been looking at the ZF that came behind the 8.1 and Duramax, or the NV4500. Any info would be greatly appreciated.
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Re: 305E transmission swap
 

The ZF S6-650 6-speed is HUGE & expensive...Specs...http://www.zf.com/na/content/media/u...Spec_Sheet.pdf
The ZF S6-650 & Allison 1000 are so big GM had to raise the body 2" for them to fit.

The NV4500 is the most feasible option.
I know nothing about the 305E V6 other than the bellhousing bolt pattern is not the same as a traditional Chevy V8...But for now im going to assume it shares the same bellhousing "spacing" as a traditional Chevy V8.

Find a light duty Dodge V8 NV4500, DO NOT buy a V10/Diesel HD version .

This adapter bolts between the bellhousing & transmission. http://www.advanceadapters.com/products/pn-712550/

Your existing bellhousing center idex hole will need to be bored to 5.125”.

You will need a 1 1/8" X 10 spline clutch disc in whatever diameter your existing clutch disc is. Chevy clutches are already the right size.

Shorten the drive shaft, Run a Dodge output/slip yoke.

If you go through with this I will help with speedo gears.