BlackRob91

what must be done to put TPI set up onto vortec motor, I was told all that is needed to be done is to drill a couple of holes in the motor where the manifold meets and tap the holes and everything could just be placed on??? Need more advice please

GTA matt

iTrader: (1)

your going to need a new manifold base with the vortec bolt pattern.

Scoggin dickey- www.sdpc2000.com #12498060 400.00
edelbrock- www.edelbrock.com #3817

Cooper

yup, when using a tpi base on a non-centerbolt head (up to '85)you can do the drilling/tapping deal, but the vortech heads are too different. I've heard good things about the Scoggin Dickey Matt mentioned.

GTA matt

iTrader: (1)

the edelbrock one is brand new. i stumbled upon when looking for the scoggin dickey website. they say it flows better then the scoggin dickey.

KiLLJ0Y

iTrader: (1)

hate to tell you this.. but edelbrock made the Scoggin Dickey base..

same base..

GTA matt

iTrader: (1)

nope...grab the new issue of GM High Tech Performance.
The SDPC add is on page 1, behind the thermostat housing is the firing order. go to page 31. edelbrock announces the introduction of the NEW vortec manifold base. it says "edelbrock" behind the t-stat housing. different intakes.

hunntn

what about the vortec head is so different? The intake bolt pattern or the water jacket ports? just curious

BlackRob91

I cant seem to find the edelbrock manifold? can you give me the page? Also would their be any disadvantages in just drilling and tapping the holes in the regular TPI intake manifold?

Cooper

bolt pattern is the biggest difference, and they get torqued to some ridiculously low torque (11 ft/lb's ?) and I think there's only 8 bolts iirc, factory intake gaskets are plagued with coolant leaks. I think the intake ports may be the same or close, but don't quote me on it.

I think the bolts are straight up and down too, been awhile since I've done a vortec intake and my memory sucks, lol

Chrome

Dude, Look at the HSR post just put up. THunder Racing is offering the Holley Stealth Ram for Vortec heads $45 bucks off list for TGO members in the month of march. $400 for a base? or $475 for the HSR for Vortec heads?

If you have to think on that one too long , hmmm.

Parrydise7

iTrader: (1)

Where's that post about the HSR from Thunder Racing? Can't find it.

Never mind. Just found it.

3.8TransAM

Edelbrock made the SDPC base and I'm willing to bet $$$$ the "new"Edelbrock base is the same thing. Real easy to change a casting for the difference of a name or not :-) Or even leaving them and grindgin them off. happens all the time :-)

later
Jeremy

ZZsmpch

iTrader: (1)

Edelbrock makes heads and intakes for GMPP crate engines too, but they don't get the Edelbrock branding, they get the bowtie.

Chrome

Wow, didn't know that!

EDIT: Wait a minute, I'm pretty sure the ZZ4 crate engine got the 113 heads?!?!

ZZsmpch

iTrader: (1)

Yeah, the ZZ4 has GM castings, the 502 has Ebrocks though. It depends on the application. The 502 intake is exactly like the RPM too, but has a bowtie on it instead of Ebrock script. I don't know about the TPI vortec base, but based on GM's history, I can believe it's possible SD had Ebrock make the intake.

GTA matt

iTrader: (1)

What is you guy's deal? The man asked which intake would work on vortec heads. I found 2 intakes that fit the bill and gave him the location. Then all of a sudden everyone is up my @**. What gives?[IMG]tpi vortec sdpc[/IMG]
[IMG]tpi vortec edelbrock[/IMG]
Well, i tried to show pictures with the differences between the two manifolds, got the red X of death.

406TPI

iTrader: (1)

Nobody's up your a$$....they were just trying to provide the correct information. The SDPC intake is made by Edelbrock....logos are easy to change in the casting process.

Chrome

I highly doubt that SDPC even has the capabilities to manufacture let alone design a Base. They are a Car Dealership and they have a performance division that sells performance parts. Most of the parts with their name on it are Private Labeled and manufactured by other companies. ppl do this all the time.

John Millican

iTrader: (1)

This is a totally incorrect statement. First off you can't tell the intake bolt pattern by the valve cover, you have to look at the heads. There were early and late intake bolt patterns. The early goes up to 1986 and the late pattern stated in '87. Corvettes did not use the late intake bolt pattern heads.

If have early or late and want to use them on a cylinder head of the oppisite style all you have to do is slot the two center bolt holes on each side of the intake manifold. You have no drilling/tapping to to.

John Millican

iTrader: (1)

You can't use a non-Vortec intake manifold on a set of Vortec heads because the bolt pattern is completely different and the ports are raises quite a bit on Vortec heads. They do not match up.

I should say it's difficult to use a non-Vortec intake on a set of Vortec heads, not impossible. You would have to be a skilled fabricator or know a buddy that is to pull it off.

Here's a picture of the port mis-alignment.

Cooper

I was under the impression that heads with the revised bolt angle for the center intake bolts also had the centerbolt style valve covers, is this not true?

hunntn

Just this last week we had an 87 monte SS in the shop that had what would appear to have the "new style heads" on it. It had center bolt valve covers...... but the intake/head bolt pattern was still the old style... Be careful, there are some heads out there with the new valve cover and old intake bolt pattern.