SBC Gen I / Gen II (LT1) Exhaust Ports

[Roadkill]

I know the LT1 and LS1 ports are totally different but what about the Gen 1 (SBC) and the Gen 2's ?

I'm guessing the ports are the same lay-out and the studs positions are the same but are the port shapes the same ?

The Turbo manifolds I'm looking at are for a SBC . . I want to be sure the ports match before buying them.

I've done a image search but found nothing 100% ideal.

Anyone got any SBC heads laying around ?

[55starchief]

Have just asked dwain

[Roadkill]

Good idea, Ta.

[Gator]

whos Dwain

he sounds cool

[55starchief]

Dwain says

They are the same layout as a traditional SBC, and I think head bolt pattern is the same, too. The exhaust ports are a little different shape. More of a sideways D. It'll also use a late model 4 bolt intake like the 96-00 Vortec truck engines, I believe. The LT4 is the same except the intake ports have a taller angle on them.

oh and dwain is coolbluess over at HCP mate, he is the perfect go to guy

[Roadkill]

So would a set of SBC headers interfer with the flow from a LT1 head ?

[55starchief]

Quoting: Roadkill

So would a set of SBC headers interfer with the flow from a LT1 head ?

I doubt it as al header tubes are round anyways. plus you can always port the  heads to match the headers

[Roadkill]

Quoting: 55starchief

plus you can always port the heads to match the headers

This is true . . .

[55starchief]

Quoting: Roadkill

Quoting: 55starchief
plus you can always port the heads to match the headers


This is true . . .

it needs to be done anyways man, polish the exhaust and the combustion chamber

[art b]

a job for martini

imagine the  gas flow ya would get.....