socal85tam

iTrader: (4)

What castings should I look for?
What should I expect to pay for a set of used corvette heads?
Is it worth it o get them used?
I'm planning of getting this for my camaro 350 1988.
Thanks

'87FAKE-IROC-Z

Look for the D port heads from '88 and later Vettes. the casting # is 10088113.
I payed $400 for a complete used set, that seems to be about the average price for a complete set.
They are worth the money, figure a couple hundred more to have them freshened up.
When all was said and done I put $700 into them, inlcuding new hardware.
they perform well for a stock casting, it is the same head that comes on the ZZ4 crate engine rated at 355 hp.

socal85tam

iTrader: (4)

Quote:

Look for the D port heads from '88 and later Vettes. the casting # is 10088113

Will these heads bolt directly on my 88 Iroc, or will I need to modify something?
Will the compression be higher? Too high with my stock postons? Or not?
I want to buy a pair of heads from a guy. He says that he took them off of his ZZ4 crate engine, he said that there is about 60K miles on them.
Thanks a lot guys

'87FAKE-IROC-Z

they will bolt right on. they have 58cc chambers so your compression is going to go up to around 10:1 with stock pistons, that should be fine.
The only thing that may or may not be a problem for you is that these heads don't have egr passages in them. So if you want to keep your egr system working you would need to have a system like on the Vettes where the exhaust comes from the header/manifold instead of from the head.
If you want to do this you should get an intake manifold off a Vette too (unless you have or are planning to buy an aftermarket one) because they have an extra port in the back to plumb the exhaust gas too. Aftermarket manifolds such as my Accel have this also.
And if you don't care about egr, then no biggie.

socal85tam

iTrader: (4)

Quote:

If you want to do this you should get an intake manifold off a Vette too (unless you have or are planning to buy an aftermarket one) because they have an extra port in the back to plumb the exhaust gas too. Aftermarket manifolds such as my Accel have this also.

This car does not need to be smoged. Does this mean I can then use the TPI base I have (stock iroc 88)?

'87FAKE-IROC-Z

Yes.
One thing I forgot was that the Vette heads have the older style intake bolt style, the center 2 bolts on both sides are not at a different angle than the others.
I think your manifold being an '88 is with the canted center bolts, you should be able to visually confirm this. the center bolts will point at a more downward angle compared to the end bolts.
If this is the case you would need to elongate those center holes so the bolts can go thru at the angle the heads need. Or find a '85-'87 F-body manifold, or get one off a Vette.
Sorry I forgot that part.

dinogta87

To add, I have an 87 GTA with 89 corvette Al heads and stock manifold. I had a shop install these about 13 years ago. Because the intake is original, does that mean that 1) my EGR may still be functional and 2) the center holes did not need to be elongated?

jcsws6

Yours being a 87 your intake should have had the old pattern. And more than likely your egr is not hooked up.

socal85tam

iTrader: (4)

Thanks to all of you for answering my questions.
I got the heads yesterday, the casting number is 10088113 ( D shape exhaust port). I also bought the TPI intake from him (edelbrock) so this will just bolt right on, he even sold me a pair of SLP runners and a set of 24# injectors.
I'm planning in installing this combo in the near future, or I might wait to get the 350 freshened up and the heads mildly ported.
What do you guys think, do you recomend to put this combo in my stock shortblock wich is about 120K mi, or should I wait to get the motor rebuilt? My motor doesn't burn any oil, and has'nt given me any problems so far.

dhirocz

iTrader: (2)

They'll bolt right on. If your engine holds good compression right now then you shouldn't have a problem. If you're interested I have a set for sale. All fresh and ready to bolt on, from a 10 k ZZ4 crate motor, ported, polished and all. Let me know if you're interested.

85TPI400

If you just laid out the cash for all that stuff, You should dig up a little more and freshen up your shortblock while the engine is mostly apart. If nothing else, definitely throw in a decent cam while it is apart.
just my thoughts, Good luck!

jmd

iTrader: (4)

They may have slotted the intake bolt holes, or they may have installed a 1985/86 or corvette base. Your EGR, unless routed externally, is not functional.