aluminum vortech heads

[68_-c\10]

Does anyone know if an 04 5.3 litre aluminum heads will fit on a 70s 350 block

[towbar]

unfortunately they will not!

[68_-c\10]

Do you know what years of vortech aluminum heads will work?

[towbar]

never made a factory vortec head in aluminum that will fit a gen 1 sbc...that I'm aware of??? The LS series engines that have the heads I think your referring to share virtually nothing with the gen 1 engines. 96 up 350 vortec's that come in trucks and vans have iron heads that will bolt on a gen 1 sbc if you use a vortec specific intake manifold....have a set on my 84 350 and they work well but are limited in valve lift capability in stock configuration.

[b.eddy's72]

towbar is correct...............you can get the L31 Vortec heads off like a 96 chevy truck and they are bolt on however you have to get a Vortec style intake manifold. Scoggins Dickie as well as others offer them in a high lift option for bigger cams. The factory Vortec heads offer 30-40 hp right off the shelf. Retaining a older style engine and using these heads is a awsome way to get cheap power.

[GASoline71]

No modern LS based heads (4.8, 5.3, 6.0) will fit first or second generation SBC's.

Gary

[Husker]

The factory Vortec heads offer 30-40 hp right off the shelf. Retaining a older style engine and using these heads is a awsome way to get cheap power.

Any particular year or casting # to look for?
Thanks
Ron

[BigRed76]

I know JEGS offers an aluminum casting of the vortec heads...

http://www.jegs.com/i/GM+Performance...FUZgMgod_3QAhg

[b.eddy's72]

http://www.crankshaftcoalition.com/w..._cylinder_head

Check the WIKI at the link above and it will tell you all about them. If somebody has them they will know them as L31 Vortec. Or should I sometimes give to much credit.