Who makes these heads?

[Mrturner1]

These are the heads I got a couple weeks ago that I've been posting about installing on my 70 long bed c10. anybody know who actually makes them and where I can find out how much lift they are capable of cam-wise?

[Highlander72]

I think those are Pro Topline heads.

[Redline novdog]

Google pro topline 223-6720

[hugger6933]

The thing to do is to measure the springs [with a spring height checker] and get a better idea of what the springs are. OR put in the cam you want and match the springs to that cam for the best results. I would bet those big heavy springs are for a cam much bigger than you need to run. Jim

[Mike C]

Small blocks mostly have same installed height on springs except in special cases. All motors do. Unless you cut the spring pockets deeper or run longer valves, same height. You would need to have a machine shop measure spring rate for you, they have a tool for that.

[hugger6933]

I meant pressure not height, I need some slack I was in the middle of cooking supper.

[Mrturner1]

Have you guys seen these heads make decent power? I have every other component needed. plenty of carb, nice big exhaust, performer intake, big cam. all that and stock heads haha hoping these heads, plus electric fans and a stall converter will really wake the old girl up. I have high hopes, I've done a lot of research and asked a million questions from you guys and I think this truck is gonna run great

[Mrturner1]

Originally Posted by Redline novdog

Google pro topline 223-6720

lots of good reading there. Man it looks good for these heads! And I got them from a guy who restores camaros for a living for 400 bucks brand new. The heads were bought to go on a project car, but the owner decided to go with less power and more OEM parts. From the reading I've done, people are getting 400 hp and 410 tq with the right cam/carb/intake combo, and thats good news right there I tell ya.

[Mrturner1]

The cam in my truck is unknown as of now. Its been diagnosed via youtube video that its definitely a big cam, big enough that I need a 2800 stall converter for certain anyway. Id really like to figure out what cam is in the motor but it'll cost me an arm and a leg in labor.

[Redline novdog]

You're not going to install the heads yourself ? If so pulling the water pump and timing cover isn't that much more time or money. My bad most cams are marked on the distributor end aren't they. You could also check static lift at the cam lobe and leave the water pump and timing cover alone. This can also be done with heads on the block already.
Good score on those cyl. heads. Can't beat 'em for the price !

[Mrturner1]

Originally Posted by Redline novdog

You're not going to install the heads yourself ? If so pulling the water pump and timing cover isn't that much more time or money. My bad most cams are marked on the distributor end aren't they. You could also check static lift at the cam lobe and leave the water pump and timing cover alone. This can also be done with heads on the block already.
Good score on those cyl. heads. Can't beat 'em for the price !

Unfortunately I live in an apartment right now, so tearing apart the motor is a no go, as fun as it sounds. I was referred to a local guy from someone on this site, so when he pulls the heads I'll ask him to check the static lift. How good of an idea will that give us as to how much cam it's got?

[Redline novdog]

If he can get a dial indicator on the cam lobes(intake and exhaust). You will know exactly how much lift the intake/exhaust lobes are. This is of course multiplied by the ratio of the rocker arms. So what the static cam lobe lift is less than what the valve is lifted.You could guess at the duration unless you put a degree wheel on it. That would take time and money.