65 S6 to LA keeping 3 on the tree.

[swing69]

Car: 65 Belvedere S6, 3 spd. manual on the tree. Everything workd perfectly...but the weezy 1 brl. S6 has a little trouble moving the beast around. Mileage is great! but, I'd like to be able to pull a small trailer with eventually...

I like the 3 spd. manual on the tree and would like to keep it. Anyone know what trial / tribulations I'll get into trying to swap in a later 318-340-360 onto the original trans????

What is needed...how much do you think the swap would cost??

 

[66aCUDA]

Super six the slant and mill the head. Install 1.70/1.44 valves from Enginebuilder. Still get better gas mileage 90% of the time (except when towing the trailer) Have more power and better gas mileage. Problem solved
Frank