1966 gmc s/w
 

Hi all
I got this 1966 s/w in Oklahoma just to haul off. its suppose
have run last year. after the 1st of the year I'm going to
apply for a texas bonded title, since all I have is a bill of
sale. then after I am done with the project I have going
now, I will start on it, that's when I will have a lot of questions

Re: 1966 gmc s/w
 

Nice find! Looks pretty straight and rust-free. Is that a 305 or a 351?

Re: 1966 gmc s/w
 

I don't know, i don't know nothing about
gmc engines. I was hopeing that the
picture of the engine, that someone tell
me

Re: 1966 gmc s/w
 

Check here Bobatwarsaw to see what you have! Welcome aboard.

http://6066gmcguy.com/EngineData.html

Re: 1966 gmc s/w
 

Besides the number stamped on top of the block in front of the passenger side cylinder head (which oftentimes is obscured by paint or grime), a quick way to tell is by the bolt pattern at the base of the carburetor. If it's rectangular, it's probably a 305. If it's trapezoidal, it's probably a 351.

Re: 1966 gmc s/w
 

Thanks everyone for the info

Re: 1966 gmc s/w
 

Nice find!

Re: 1966 gmc s/w
 

Judging by the exhaust manifolds and the ww carb it's appears to be a 305.

Re: 1966 gmc s/w
 

FYI, you also have a rare factory RPM gauge, DO NOT PART with that.

Re: 1966 gmc s/w
 

hi jbgroby
I am not doubting your word at all, but can you tell
me how you know that the tack is factory, so I can
start learning how to id the factory parts that was
offered
thanks bob

Re: 1966 gmc s/w
 

Bobatwarsaw; this link says the factory/accessory tach should be a 5K and not a 6K unit. So I don't think it's "correct" but still a nice addition especially if it does not require the transmitter box.

http://6066gmcguy.com/cluster.html


...and another link about the cluster I got off EBay. Look at the different fonts used and I think the 5K numbers have a slight green tint.

http://6066gmcclub.com/showthread.php?t=48609