damian

I threw a main or rod bearing in my stock tpi 350 so i want to install the GM 330hp 350 crate engine. I dont like the fuel injection or the emissons stuff ( to hard to work on the engine to much stuff in the way)And ive been waiting for the last 6 months for the tpi base for the vortech heads to come out but no dice so i want to trash the fuel injection and put in a carb. what do i need to change to get my car with fuel injection to work with a carb. I also have a digital dash in my 88 trans am i dont know if this will make it harder to swap. IM going to follow the budget 350 build up in Chevy High Performance they got 408 hp and 430 pounds of tourqe from this engine with no internal mods. So can this swap be done and what will i need to do it is there a book i can buy or something. This is my first car it worked for about 28 days and has been broken for about 6 months. And the body in mint. it sucks!!!!!!!

R.O.B.

You will need to change the distributer to a vacuum controled unit, and possible get the B&M torque converter lock-up switch. Don't forget to put in a fuel pressure regulator, TPI runs 40psi, your carb will only run about 7psi. There may be more, but this is what I can think of for now.

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Rob
'86 TA 305 TPI

Russ-So Cal

Actually I think anything above six psi will
keep the carb from working correctly.

JPrevost

88 T/A, hmm... You're looking at the 330hp 350, good engine but it's flat tap. cam, not a roller. I personally wouldn't downgrade any part durning an "upgrade" so you might want to look at getting an engine with a roller cam. zz4 is always good if you don't have emmisions testing (heads don't have EGR). If you're like me and are tested hard I'd look into the 92-93 caprice 350, it's the same as the ZZ4, except it's only a 2-bolt. It's inexpensive and has some good potential for the budget builders. I'm not completely sure if the goodwrench engine replacement has the zz4 rotating assembly or not but sdpc2000 has that if you really are looking for a basic engine to work on. Good luck but keep in mind the roller cam thing, ask anybody here and they'll tell you the same thing about the the 330hp 350.

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, Jon (91 RS too many mods to list)

five7kid

iTrader: (14)

damian:
The 330 hp 350 crate has Vortec heads, so you need a Vortec intake manifold (available).

JPrevost:
The GMPP online info about this crate engine says "melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts". Steel means roller.

The ZZ4 is used as the engine for the 350 HO Camaro emissions-legal conversion. If it doesn't have EGR, how is it legal? The picture shows the aluminum D-port exhaust heads and an intake with EGR provision.

I think you need to reconsider your facts.

Also, the replacement engine does NOT have the ZZ4 rotating assembly. It's a 2-piece rear main seal crank, for starters.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.73 unlimited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, TBD heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

Calvin89RS

Well if you read in the GMPP book it says that there is no provision for EGR Also when I took the heads off in Jan. there is no opening of any kind under that intake heat passage. Just so you know. Also if you didn't want to fool around with the in tank pump just leave it off and run a mechanical pump, you can even leave the stock pump where its at and just let it act as the pick up. Thats how I've got mine anyways.


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89Camaro,AFR195's,LT4 HOT CAM,Victor Jr/750 Demon,T56,12 bolt/4.10's

AustinT

Hey Calvin89Rs


Ive got a 89 RS also It was a TBI but Im putting a zz430 clone in it. What you said about the intank pump. does the mechanical pump pull through the stock pump in the tank OK. YOur not running both pumps are you?
just askin because Ive got to do it to mine THanks

JPrevost

I got an e-mail from sdpc2000 tech dept and this is what they said the differences were between the 330hp 350 and the ZZ4:
"The ZZ4 has a roller cam where the 330 HP has a hydraulic flat tappet cam. The ZZ4 has 58cc heads 10:1 compression to the 330 HP 64cc heads 9.1:1 compression. They both have hypereutectic pistons. The ZZ4 has a steel crank and the 330 HP has a cast nodular crank."

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, Jon (91 RS too many mods to list)

JPrevost

A few more quotes from e-mails I've recieved from sdpc2000:
"Sorry it has taken so long to get back with you. We actually use the caprice engine short block as a base for some of our power package engines. We can put together any combination you would like. The caprice engine does come with a roller cam, so all you will have to do is swap it out. Both the ZZ4 and the 330 hp engine have one piece rear seals and will bolt up to your 4L60."
"The difference between 12513151 and 12493505 is the cam, front cover, heads, balancer and labor to change everything. We use the better TBI/TPI heads that came off the 285 HP crate engine that GM used to sell."
The ZZ4 doesn't not come with EGR heads and that is why I've been having trouble finding a good engine to swap in. If the ZZ4 had EGR I think it would be big seller here in NJ.
So either my facts or wrong or yours are, it seems like we've come to a stand still. Anybody else have some input so we can clear this up.

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, Jon (91 RS too many mods to list)

JPrevost

Will somebody clear this up for us? I need to know if the zz4 has EGR or not. I was sure it didn't, but somebody is telling me to reconsider my facts. Please please help us out, I'm going to have to change my engine swap plans if I'm wrong.

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, Jon (91 RS too many mods to list)

five7kid

iTrader: (14)

I'll back off. I was going only by what the GMPP web site said about these engines. I've been looking at that 350 HO conversion and from what I can tell (without having seen one), assumed it has EGR on the intake manifold, which (should) mean it has cross-over passages.

When an information site says "use melonized distributor gear" on the 330 horse page, one assumes that's because it has a steel roller camshaft. Your tech source (whom we assume has seen one) says that's not the case.

Like I said, I'll back off. Apologies offered.

Derek91RS

If yuor key has the chip in it you will need to switch to the older ign. switch or just use it to turn on everything and use a push button starter switch. something to do with the computers antitheft system i think