Thanks guys

I was told by the po that he put a 308 behind a 400 sb and it appears to be a 420 tranny from what I can tell...I know it has a granny gear and I was thinking about some taller tires...
I have boats to pull but here in Florida it's mostly flat except for a few parts of cent & panhandle...I know you western guys are snickering... smile

at any rate I have had to take the po's word for most of what is in this truck but it does seem to run good...

he told me it was a 400 but not if it was a chev or pontiac and I haven't been able to catch up w/him and ask...still haven't found #"s on the eng to tell for sure