sharkthehunter77

I spoke to a dude today who said the heads of an 86/87 or newer Corvette would fit on my 77. This sounds odd to me but then again i know poopie about this subject! Those heads are for fuel injected cars so aren't there flow characteristics way different. I have never heard of this. Also said he took the Vortec heads of a 2000 full size chevy truck from the junk yard ( a wreck I presume) and put them on a C-3. Is this possible. The Vortecs seem cheap ... dont get me wrong i still plan on doing a cam first but i must eventually match that specific cam ( 260H/XE262) to what ever heads i may decide to purchase in the long run. Whats the opinion/advice of the forum?

mapman

sharkthehunter77,

Vortec heads fit all small blocks 1955 to present, excluding LT1/LT4 reverse coolant flow engines and current LS1 style engines. Vortec heads require a Vortec style intake manifold. GM does not recommend modifying the heads to accept earlier design intake manifolds.

sharkthehunter77

As i understand my edelbrock performer has something like 12 bolts while the manifold for the vortecs only have something like 6 or 8? A new manifold is never totally out of the question ( but then again this is just research). I could allways sell the old performer for a new manifold, cylinder head, cam set up!?!?

Metal Wulf

Might be talking about the L98 heads which are a good upgrade for a stock L48 as the heads are 58cc and would bump the compression up nicely.

Go to GM Parts web site and enter part # 12556463

Also search the archives for info as well, I know they came up in posts when I was picking heads for my car.

:cheers:


[Modified by Metal_Wulf, 12:36 AM 1/23/2003]

mapman

sharkthehunter77,

You might find a copy of the GM Performance Parts catalog. It has lots of information in the part descriptions as to what fits what. Also you can see by part number what differs among the various crate motors.

442olds

To answer your question they will fit on your older engine, the only thing that is really different is the center four intake bolts if the heads have them (newer verstions only have 8 intake manifold bolt holes with a revised bolt angle, older versions have a revised angle for just the center four bolt holes). Heads with the center four bolts angle revision can be used with any intake manifold as long as you feel comfortable with grinding an oblong hole into your intake manifold to allow the bolts to pass through into the intake. The other thing the vortec heads require are center bolt valve covers or an adapter plate can be used to convert them over to the old style perimeter valve covers.

Hope this helps.


[Modified by 442olds, 6:51 AM 1/23/2003]

Nyses12U

I've been recommended the vortec heads however summit says they don't fit the 87 Corvette help?

Jebbysan

I think this sets a new recorded for oldest Zombie thread resurrection.....over 20 years!!!

Jebby

Nyses12U

Just got my 87 a few months ago was recommended vortec heads so doing some research

Jebbysan

That's cool...but start a new thread...this one is 20 years old....

Jebby

Nyses12U

Never again like I said brand new here made a post asking a question about a transmission and basically was scolded for not knowing everything about my car

Bikespace

@Jebbysan (above) is exactly who can help you with your question. Adding Vortec heads to SBCs is what he does. So please take his advice, and start a new thread with your question.

And post PICTURES! We have no idea what you do, and don't know, until you show us.

Jebbysan

I'll answer this here......Vortec heads do not fit the 87' TPI or any TPI engine because....as far as I know....no one makes a Vortec TPI intake manifold base for it.......
There are many other options available.......but know that the TPI runners, plenum and base are severely limited to how much power you can make and unless you are going to buy larger runners and base...the cylinder heads are a complete waste of money......
Engines work together as a package and just throwing a set of heads on without changing the other components involved is a small gain for big money........

As far as your "Never Again" statement.......I said cool to you and suggested you start another thread......if you consider this criticism or did not like this comment well then maybe this place isn't for you.......we give constructive criticism here and ask direct questions.....there can be some ******** from time to time throwing darts but ignore them......
Ask and you shall recieve....but be prepared to answer questions and post pictures......this isn't Facebook.....

Also...you have a C4...this is the C3 forum.....the C4 side is not like here at all.....I posted over there 2 years ago and almost regretted it......lot of trolls. This C3 side is much more helpful.


Jebby

lionelhutz

Scoggin-Dickey sold a Vortec TPI intake. Is it no longer available?

bonesbrakr

I guess we are all going to over look the C4 in the C3 stable?
There was a Vortec base for a TPI engine. lionelhutz is correct and it is still available. Unless you are on a budget there are better performance heads to get then Vortec heads.

lionelhutz

Well, with a TPI is it worth the better beads though? They'd likely work well for a TPI performance improvement.