'66 GMC BBW w/351E and Factory Buckets

[RockTonka]

Well...


That Holley we've been chasing turned out to not be the #4412 Holley 500 we wanted. Working with a friend that had what he thought was a 500 off of a boat and bought it sight unseen. My son picked it up today and looks like we have a 300 or so 2-barrel Holley...I need to do some more research.

But, it was freshly rebuilt so...

We went ahead and modified a #1937 Holley to Rochester adapter to work with the 351E's larger intake pattern and dropped the carb on.

Everything hooked up cleanly and other than a non-functioning electric choke, actually ran pretty well for not being dialed in...easily better than the Rochester. We'll tune it a bit over the weekend and decide if we still need the 500.

The chrome will go away when we have time to find something more appropriate.

[duallyjams]

All you need now is some plaid valve covers.

[RockTonka]

Originally Posted by duallyjams

All you need now is some plaid valve covers.

I wouldn't pass a set up!


Took the truck over to a buddy's shop to get it up on the lift and work through some of the leaks. The master was flowing pretty good, and we have leaks from the power steering, valve covers, and tranny pan.
Pulled the inspection cover...pump/front seals and rear main seals were good...new filter, gasket, and fluid and the tranny is good to go.
New valve cover gaskets and a master took care of the biggest leaks.
Asked a mechanic buddy to drop by and help with giving it a good once over...pleasantly surprised to not find any surprises. Everything looks pretty solid.

[duallyjams]

The inner fender is a built in work bench witch makes it nice because nothing rolls away.

[RockTonka]

Originally Posted by duallyjams

The inner fender is a built in work bench witch makes it nice because nothing rolls away.

That's the truth...plenty of space to stack crap! Nothing rolled away, but a 9/16 wrench managed to walk away.
It'll probably show up in a frame rail or something.

Well, we decided to go ahead and bring in a new 4412 Holley and I'm glad we did!! It really runs much better than either the Rochester or the 300/350? Holley we had to play with.
Set the initial timing to 5 UTC and tweaked the carb just a bit from factory settings...seems alright for now.
We are thinking about a couple 2.5" 50 series dumping in front of the rear tires out of some 3" slash cuts

[Matt's k5]

Originally Posted by RockTonka

Well...


That Holley we've been chasing turned out to not be the #4412 Holley 500 we wanted. Working with a friend that had what he thought was a 500 off of a boat and bought it sight unseen. My son picked it up today and looks like we have a 300 or so 2-barrel Holley...I need to do some more research.

But, it was freshly rebuilt so...

We went ahead and modified a #1937 Holley to Rochester adapter to work with the 351E's larger intake pattern and dropped the carb on.

Everything hooked up cleanly and other than a non-functioning electric choke, actually ran pretty well for not being dialed in...easily better than the Rochester. We'll tune it a bit over the weekend and decide if we still need the 500.

The chrome will go away when we have time to find something more appropriate.

can you give me more info on how you mounted the 1937 adapter to the larger manifold, I have a 351 and want to do this thanks

[Matt's k5]

cool truck by the way this is a older post would love to see what you have done recently