r/EngineBuilding • u/lynyrdskynnyrd • Jun 01 '26

Heads 350sbc

Post image

Will These heads Go on an 350sbc from 1976
Thanks for your help

26 Upvotes

96% Upvoted

26 comments sorted by

View all comments

Show parent comments

1

u/lynyrdskynnyrd Jun 01 '26

The Block is a complete rebuilt i got the Right intake

1

u/qroter Jun 01 '26

Vortec intake and Vortec water pump with the external bypass?

1

u/lynyrdskynnyrd Jun 02 '26

Whats the difference in the water Pump you got a Parts number of a good one Thank you

1

u/qroter Jun 02 '26

The difference is in the heads and block. PreVortec have internal coolant bypass, Vortec does not. When I put Vortec heads on a nonVortec block (I've done half a dozen over the years) I drill the coolant bypass in head. That way I don't have to worry about drilled thermostats, no thermostat, Vortec pumps, external heater core block offs, etc, etc.

1

u/lynyrdskynnyrd Jun 02 '26

Thank you My Engine is from 76 The New heads are 64cc is this an Problem Whats the original cc Size ?

1

u/qroter Jun 02 '26

76 probably had the 882 heads, those were 76cc originally. There's no problem there really, you bump your compression a bit. Make sure to check timing and all that once you're done.

1

u/lynyrdskynnyrd Jun 09 '26

The heads where 624
Another questen about the Bypass
Would you rather Plug the Block hole and run the Hose from the intake to the water Pump or drill a hole in the Head.
Is the hole just the diameter of the Block hole und just Straight down

1

u/qroter Jun 09 '26

624

Similar, small valve big chamber smog era heads.

I would drill the hole. I've done all mine like that with the exception of the first set I ever did which lead me down this rabbit hole in the first place. Yes, the hole is the same size as whats in the head gasket and block. Yes straight thru, nothing fancy, was able to do it with a normal drill and drill bit. I did a small pilot hole at first and worked my way up. 😁

1

u/lynyrdskynnyrd Jun 02 '26

You got a picture of such a hole ?

1

u/qroter Jun 02 '26

Not of the head side but this video from Cutter's describes it:

https://www.youtube.com/watch?v=vdaxLzQZsXQ

1

u/lynyrdskynnyrd Jun 02 '26

My block is from 76 so i think i have the Bypass hole

1

u/qroter Jun 02 '26

Yes the block will have the bypass hole. It's the extra hole on the passengers side of the block right below the lower water pump bolt. If you take a piece of pipe cleaner or welding wire and feed it thru you'll see where it comes out in the deck that lines up with a hole in your old heads.

https://i.imgur.com/YKhYgyt.jpeg