ZZ5 W/tpi
Thread Starter
Heel & Toe
Joined: Feb 2014
Posts: 21
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ZZ5 W/tpi
Putting a zz5 in my 82 plan on removing the holly carb GM installs and using a full TPI from a vette w/a 383 stroker. Harness upgraded ECM ect. Anyone TPI a ZZ5 or ZZ4 out here? Just want to know what issues I may run across ! Thanks.
Melting Slicks
Joined: Jun 2011
Posts: 3,116
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I would like to also know what to watch out for.
Thread Starter
Heel & Toe
Joined: Feb 2014
Posts: 21
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This is the only EFI set up that will fit under the hood as far as I know. I haven't heard anything about the alt getting in the way of the arm, I have the stock accessories but, I'm getting the turn key so I will have all new accessories and serpentine belt. Guess I'll just sell the carb. There is a guy here in Houston that sells TPI set ups for really good prices. I'm pretty sure I have to swap to an electric fan. I was told that the ZZ5 was the only crate that would bolt up to the TPI.
Last edited by 82sharkk; Feb 5, 2014 at 12:02 AM.
Thread Starter
Heel & Toe
Joined: Feb 2014
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Pro
Joined: May 2013
Posts: 653
Likes: 36
makes a ton more power than an old tpi design...(long runner)..the motor will be flat by 4500rpm...
just saying
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Pro
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Thread Starter
Heel & Toe
Joined: Feb 2014
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It's not a stock tpi set up it's been ported and the ECM tuned bigger injector way to much to list 600, I do like the mini ram too.
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Heel & Toe
Joined: Feb 2014
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Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
I have a TPI in my 77. I used an L31 crate engine as the base (The L31 was the vortec engine out of 1996-2000 light trucks). It has vortec heads, 4 bolt main, roller cam and 1 piece rear seal. I replaced the cam with a hotter than stock one from Crane and bought a manifold base from Scroggins-Dickey.
Both the manifold base and the vortec heads flow much better than the stock L98 pieces (and the zz4 heads). I finished it off with a chip and harness from Street & Performance, a 52mm throttle body, a ported plenum and larger runners. A Scroggins-Dickey dyno test with these mods produced over 350 HP while keeping the TPI lower end torque.
All told, this combo still cost less than the zz5 and boxed TPI you're talking about.
Both the manifold base and the vortec heads flow much better than the stock L98 pieces (and the zz4 heads). I finished it off with a chip and harness from Street & Performance, a 52mm throttle body, a ported plenum and larger runners. A Scroggins-Dickey dyno test with these mods produced over 350 HP while keeping the TPI lower end torque.
All told, this combo still cost less than the zz5 and boxed TPI you're talking about.
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
As for the new heads on the ZZ5, not a lot of info yet but it sounds like they're the fast-burn heads, which have dual bolt patterns in one of the later iterations. I can't remember whether the port matched the old style intake manifolds better or the Vortec pattern.
Regardless, there are sources out there for TPI intakes on Vortec heads as well. See the Edelbrock 3817:
Thread Starter
Heel & Toe
Joined: Feb 2014
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Ok so after speaking with GM engineer today, it will bolt up to the ZZ5 not the ZZ4 you have to buy a modified set up to fit the ZZ4. I know I could buy an engine and build it my self and I have in the past but it's hard to find one in good shape, then it has to be gone through, machined if necessary parts added for performance and no warranty. So that's why I'm going with a GM engine, was going to go with blue print but I backed out because of the reviews they got on line. My original post still stands if anyone has used a zz5 yet?
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
You could not have talked to a GM engineer who new what you where asking. L98 heads (ZZ4) ........ ( ZZ5 , ZZ383 ) use the same heads.. Called Fast Burns
Just put a TPIS system on a ZZ383 for a 1989 corvette , fit fine and it has the L98 intake bolt pattern. Fast burns are drilled for both vortec intakes and all standard sbc intakes.
Just put a TPIS system on a ZZ383 for a 1989 corvette , fit fine and it has the L98 intake bolt pattern. Fast burns are drilled for both vortec intakes and all standard sbc intakes.
Racer
Joined: Mar 2012
Posts: 476
Likes: 37
From: Lynnwood WA
I have a TPI in my 77. I used an L31 crate engine as the base (The L31 was the vortec engine out of 1996-2000 light trucks). It has vortec heads, 4 bolt main, roller cam and 1 piece rear seal. I replaced the cam with a hotter than stock one from Crane and bought a manifold base from Scroggins-Dickey.
Both the manifold base and the vortec heads flow much better than the stock L98 pieces (and the zz4 heads). I finished it off with a chip and harness from Street & Performance, a 52mm throttle body, a ported plenum and larger runners. A Scroggins-Dickey dyno test with these mods produced over 350 HP while keeping the TPI lower end torque.
All told, this combo still cost less than the zz5 and boxed TPI you're talking about.
Both the manifold base and the vortec heads flow much better than the stock L98 pieces (and the zz4 heads). I finished it off with a chip and harness from Street & Performance, a 52mm throttle body, a ported plenum and larger runners. A Scroggins-Dickey dyno test with these mods produced over 350 HP while keeping the TPI lower end torque.
All told, this combo still cost less than the zz5 and boxed TPI you're talking about.
Zorro
Le Mans Master
Joined: Feb 2011
Posts: 5,943
Likes: 61
From: Southern NH
who ever you talked to is an idiot. The TPI bolts onto a ZZ4 because the ZZ4 uses the exact heads that the TPI came off of.
Just buy this engine for a lot less and call it a day. unless you absolutely want fast burn heads.
http://paceperformance.com/i-5146074...ck-engine.html
Just buy this engine for a lot less and call it a day. unless you absolutely want fast burn heads.
http://paceperformance.com/i-5146074...ck-engine.html
Safety Car
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
I looked up the fast burn heads for the ZZ5, PN# 19300955
http://www.gmpartsdirect.com/results...umber=19300955
Note that this head has the 210cc raised roof ports. The stock TPI manifold (all Corvette, 85-86 Camaro/Firebird) will bolt on, but I don't think it will cover the intake port, at least in my case it didn't. Here's a pic of a '90 TPI manifold and Brodix IK200 heads on my 383 which have the raised ports as well....yeah I found out the hard way
The Vortec manifold that sharkracer posted may work on the fast burns, but I can't say for certain. Check for used Miniram intakes in the c4 section or the Camaro forums...I found mine over at thirdgen
Hope all this helps
http://www.gmpartsdirect.com/results...umber=19300955
Note that this head has the 210cc raised roof ports. The stock TPI manifold (all Corvette, 85-86 Camaro/Firebird) will bolt on, but I don't think it will cover the intake port, at least in my case it didn't. Here's a pic of a '90 TPI manifold and Brodix IK200 heads on my 383 which have the raised ports as well....yeah I found out the hard way
The Vortec manifold that sharkracer posted may work on the fast burns, but I can't say for certain. Check for used Miniram intakes in the c4 section or the Camaro forums...I found mine over at thirdgen
Hope all this helps