Tell me about these Holley Heads

[hardwaycooke]

Ran across a pair of sbc Aluminum Holley heads. Recently machined in great shape. Cast # is 12111. Thats all it says. Does anyone know anything about them. Are they worth the buy for $600?

I am getting ready to stroke my sbc to 383. Got my carb and bottom end. Looking for intake and heads. Wanting lots of low end torque.

Have a 2wd 71 350.

[67_C-30]

Those are the old Holley Systemax heads and they would be great for a torquey 383. They have 185cc intake runners, which is bigger than stock, but sized great for a bigger cu in SBC like a 383. Those heads were made for Holley by Brodix, and they used to come in a package put together by Holley with their Street Dominator high rise intake and a hyd cam that made a little over 400 HP on a flat top 350. They should be well worth $600 if they are in good shape and the guides are trashed.

[hardwaycooke]

Originally Posted by 67_C-30

Those are the old Holley Systemax heads and they would be great for a torquey 383. They have 185cc intake runners, which is bigger than stock, but sized great for a bigger cu in SBC like a 383. Those heads were made for Holley by Brodix, and they used to come in a package put together by Holley with their Street Dominator high rise intake and a hyd cam that made a little over 400 HP on a flat top 350. They should be well worth $600 if they are in good shape and the guides are trashed.

Guides are trashed???

[67_C-30]

Originally Posted by hardwaycooke

Guides are trashed???

I mean worn out - meaning if you have to pay $600 for them and then have to have new guides put in them, its not such a good deal.

[hardwaycooke]

Originally Posted by 67_C-30

I mean worn out - meaning if you have to pay $600 for them and then have to have new guides put in them, its not such a good deal.

price doesnt include rockers, just valves and springs..still good? Does have screw in studs, push rod guide plates.

[67_C-30]

Originally Posted by hardwaycooke

price doesnt include rockers, just valves and springs..still good? Does have screw in studs, push rod guide plates.

Yes, that's still a good price. Those heads are have a 20 degree valve angle to make them flow better instead a standard 23 degree angle. They work fine with normal SBC pistons unless you are running a big cam (like a race cam or roller).

[GASoline71]

You can... just make sure your piston to valve clearance is good. Also check to make sure the valve springs will support the amount of lift you wanna use.

Gary