1966 GMC 305 V6 Service

[TommyDuncan]

Originally Posted by Rufton

Pre 2012:
305E loves 70+ mph cruise
3.07 dana 44
P235/75R 15 28.9"
Stromberg WW 280 CFM 2bbl
Main jets 0.055", 0.054"
Poor compression
high oil consumption
2" single exhaust pipe
quiet muffler
mix 8-9 mpg
70mph hwy 9-10mpg

2012 changes:
Main jets 0.050", .050"
70mph hwy 11-12 mpg


2013 changes:
Main jets 0.050", .050"
305E rebuilt
Good compression
Low oil consumption
mpg to be determined

thank you again!

There is a really clean long bed knee knocker that has been sitting for at least 5 years that I am slowly convincing the owner to sell to me. I wanna like the V6, I really do...
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