Can 94 lt1 heads be used on a vortec block with a diffrent intake of course. Just wondering if the heads have to be reversed flow. Thanks

 

No-- The heads ARE reverse flow the block is NOT.

 

the heads require welding and drilling but for the 100.00 you will pay for the work and the 200.00 for the heads do it go here to see how its done www.thirdgen.org inside go to TPI there is a sticky

 

Ya could use conventional SBC heads and they are a dime a dozen out there. The LT1 head is not the best flowing head by a long shot and to re do them back to conventional SBC is a waste of money and time IMO.

 

Just us the L31 iron Vortec heads, they're very very similar to the iron LT1 heads but for a conventional SBC. They outflow the Aluminum LT1 heads by a fair bit stock. If you're running a hot cam with over about .470 lift you will want some better vavle springs and a quick clearance job on the valve guides though.

But anyway you'll likely make more power w/ Vortecs than you would w/ the stock AL LT1s... You can get a set on ebay for about what LT1 heads go for.


I was running box stock Vortecs on the 350 in my 87Z, w/ a 218/224 cam, edelbrock headers, etc. There is no doubt it would annihilate my current bolt on LT1...

 

The Vortecs do outflow the early LT1 aluminums not by a huge amount but do outflow them enough to make pulling the Vortecs and modding LT1 aluminums to fit nothing but foolish.

 

Thanks, That is what i was explaining to my buddy but he didnt believe me. So I had others now that say the same. Thanks Guys