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383 GM CRATE ENGINE:

 
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jeep_406
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Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
53123.48 points


1972 Chevrolet Nova

PostPosted: Thu Aug 24, 2006 11:24 pm    Post subject: 383 GM CRATE ENGINE: Reply with quote

Has anyone used the GM 383 425 horsepower General Motors Crate engine. Looking for a good streetable small block for a 79 Vette with a stick shift. Customer wants to keep it old school, no fuel injection.
Figure the longer stroke will move the heavy Vette along better than a 350 would.
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10sec.et
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Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Fri Aug 25, 2006 7:26 am    Post subject: Reply with quote

i wouldnt be afraid of a GM crate motor. even if it is a performance motor. i have never had a problem with one.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Big Dave
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Joined: 04 Dec 2005
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Location: Tampa Florida
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PostPosted: Fri Aug 25, 2006 3:04 pm    Post subject: Reply with quote

I have owned several over the counter crate engines from GM all unfortunately were big blocks, so I can not speak from personal experience about the 383 small block. Good news I can report is that the 383 is an excellent replacement for a old 'vette's 350, both in terms of street manners, and performance.

The plus side you should be looking for is that if you are a certified mechanic they will warrant the installation for a year. All he has to do is show up at any dealership with bill of sale and they will take care of their needs leaving you to make more money instead of working on returns.


Big Dave
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clay
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Joined: 24 Nov 2002
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Location: South Carolina
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1972 Chevrolet Nova

PostPosted: Fri Aug 25, 2006 7:09 pm    Post subject: Reply with quote

Hot Rod magazine has beat on them pretty hard. They made around 750 h.p. with a blow through Vortec setup. I think the only change was the camshaft. Seems like the stock cam specs were pretty mild and should have great drivablity. Clay
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jeep_406
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Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
53123.48 points


1972 Chevrolet Nova

PostPosted: Fri Aug 25, 2006 10:51 pm    Post subject: Reply with quote

Looks like a good deal and the warrantee is 12 months from date of purchase or 12,000 miles. I am GM trained and certified, or is that certifiable paranoid
Looks like the 383 would give the Vette pretty good street performance and driveability.
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Big Dave
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PostPosted: Sat Aug 26, 2006 8:35 am    Post subject: Reply with quote

Training doesn't have to come from GM specifically (though it couldn't hurt) just be ASE certified as an Automobile Technician. This separates the trained technicians from dummies like me with greasy slick sleeves.


Big Dave
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jeep_406
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Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
53123.48 points


1972 Chevrolet Nova

PostPosted: Sat Aug 26, 2006 9:30 am    Post subject: Reply with quote

I can tell from your writings that the dummy classification doesn't apply.
I do believe that people should try to attain a degree of proficiency in whatever field they chose. I became a Tech late in life when my chosen career ended.
Don't do much now, just enough to pay for my "Nova" habit.
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cutlass389
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Joined: 29 Apr 2006
Posts: 268
Location: NC
8544.62 points


1978 Oldsmobile Cutlass

PostPosted: Sun Aug 27, 2006 2:24 pm    Post subject: GMPP Reply with quote

I'm not sure if this is germain but here goes. I picked up a ht383 a few years ago. This one uses vortec heads instead of the fastburns on the 425hp zz383. The only negative I've had was the fact that it came .040 over according to the plate on the side of the block, hence the 389 moniker. These are supposed to be std. bore so I've had a couple of builds stolen from me. When I called, nobody had any idea what I was talking about.
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jeep_406
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Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
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1972 Chevrolet Nova

PostPosted: Sun Aug 27, 2006 6:32 pm    Post subject: Reply with quote

Are these new or remanufactured?
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Big Dave
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PostPosted: Sun Aug 27, 2006 7:51 pm    Post subject: Reply with quote

The GM Performance Parts engines are all brand new with no remanufactured or used parts in them. I think cutlass389 got a hold of an old "Target Master" engine which was a remanufactured engine that "Mr. Goodwrench" assembled for Chevy and they used to sell them back in the late eighties to people who wanted an instant motor rebuild.


Big Dave
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Sun Aug 27, 2006 8:06 pm    Post subject: Reply with quote

Big Dave wrote:
The GM Performance Parts engines are all brand new with no remanufactured or used parts in them. I think cutlass389 got a hold of an old "Target Master" engine which was a remanufactured engine that "Mr. Goodwrench" assembled for Chevy and they used to sell them back in the late eighties to people who wanted an instant motor rebuild.


Big Dave


In 82 I pulled a pan from a Target motor that was knocking and found main bearings and rod bearings that were between .002 and .010 throughout the motor. They used to use every bearing available to set the motors up for production. The bores were the same thank Mexico or I would have been hosed fixing it!

The crate motors now are from Chevrolet and are good so far.

As long as it doesn't say Target you should be OK.
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