Thread: ID these heads? They don't look Vortec! + other questions

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Eric is right, of course. For the next time, here is how you can spot a Vortec. The intake is held to the heads with 8 bolts on a Vortec, yours has 12= prevortec. Also, the valve covers are held on by 4 bolts around the perimeter of the cover. Vortecs have 4 bolts down the center of the cover, in a line.

You might want to go back to that previous owner and "mention" his little bit of "misinformation" that he gave you. Makes you wonder what else he lied about.


Don

I can't really see the water pump is it a reverse direction pump??

I can't see the casting number so far. Is it on the end of the heads?

It is an electric water pump and I believe it is reversed since it flows to the left side of the engine.

I'll post casting numbers if I can find out where they are.

Thanks!

Originally Posted by Itoldyouso

Eric is right, of course. For the next time, here is how you can spot a Vortec. The intake is held to the heads with 8 bolts on a Vortec, yours has 12= prevortec. Also, the valve covers are held on by 4 bolts around the perimeter of the cover. Vortecs have 4 bolts down the center of the cover, in a line.

You might want to go back to that previous owner and "mention" his little bit of "misinformation" that he gave you. Makes you wonder what else he lied about.

Don

Exactly!

I just wanted to be sure I was right about the heads. GEEZ!

Hey Eric: Someone posted on here a week or so ago that the only true Vortec heads have this sawtooth pattern cast into the front of the heads, where the old Fuelie heads had the double humps. What's with that? My heads are Vortec, and they don't have that, nor do any of the ones I looked at in our parts dept at work.

And if I can ask (not trying to hijack, but it is along the same lines), my heads are these, and I pulled them up on Mortec. Can you tell me anything about them and how good they are. Not looking for out and out HP, just usable heads.


10239906...96-up...350.........."Vortec 5700", "L31", 64cc chamber,
170cc intake port, 1.94"/1.5" valves

Thanks, Don

Originally Posted by Itoldyouso

Hey Eric: Someone posted on here a week or so ago that the only true Vortec heads have this sawtooth pattern cast into the front of the heads, where the old Fuelie heads had the double humps. What's with that? My heads are Vortec, and they don't have that, nor do any of the ones I looked at in our parts dept at work.

And if I can ask (not trying to hijack, but it is along the same lines), my heads are these, and I pulled them up on Mortec. Can you tell me anything about them and how good they are. Not looking for out and out HP, just usable heads.


10239906...96-up...350.........."Vortec 5700", "L31", 64cc chamber,
170cc intake port, 1.94"/1.5" valves

Thanks, Don

These heads will work fine for hp levels up to say 450.
If you want more hp I would look at a bigger runner size.
Because of the valve size and port size these heads would work great for a mild street car.
The should make good mid-range power.
Because of the intake to exhaust ratio I would look at cam's that favor the exhaust side by at least an extra 4-6 degree's.
An example of this would be a Crane part #113931.
Spec's are .440 in.,.454 ex,duration at .050 would be 210 in,216 ex,.
I am not saying this would work for what you are doing but it is a good example.
Always favor the exhaust with these heads.

Thank you Sir.

Looks like Saxman bought a Goodwrench engine instead of a Summit 330, huh?

Don't you just hate liars. The guy who sold him this is lucky this isn't Iran. He would be walking around without a tongue.

Don

Originally Posted by Itoldyouso

Thank you Sir.

Looks like Saxman bought a Goodwrench engine instead of a Summit 330, huh?

Don't you just hate liars. The guy who sold him this is lucky this isn't Iran. He would be walking around without a tongue.

Don

Not a problem.Calling me sir is about like installing an elevator in an out-house.L.O.L

Don