C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Sep 24, 2015 | 05:28 PM
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I know my mind is jumping ahead about 2 years, but in a fit of boredom I checked craigslist for engines and found someone selling a zz 350 for $3500... about 1/2 the new price. Would that work in a 79?


Here is the link in case anyone in MI is interested.


http://annarbor.craigslist.org/pts/5208293744.html
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Old Sep 24, 2015 | 10:02 PM
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Yes it will work, is your car auto or stick?
Also check Jeg,s & Summit to compare to new
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Old Sep 25, 2015 | 10:04 AM
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I have an auto. How do I identify the transmission? I am a couple years from being ready for a new engine but I was surprised at the number of engines for sale locally. I'll need some time to figure out what engine would suit my needs best and I will have to get this thing on the road to figure that out.
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Old Sep 25, 2015 | 01:25 PM
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Wow the 3500 is what I paid In 2004 for my new Zz4.
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Old Sep 25, 2015 | 07:42 PM
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That doesn't look like the intake that came with the ZZ4 - depending on what's on there and what you have, you may need to change the intake or your carburetor to match.
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Old Sep 26, 2015 | 01:17 AM
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Originally Posted by Shark Racer
That doesn't look like the intake that came with the ZZ4 - depending on what's on there and what you have, you may need to change the intake or your carburetor to match.
This motor looks like a ZZ crate 350, which I think had a square bore intake, not a ZZ3 or ZZ4, which were spread bore. If so, first of the ZZ motors, so maybe pre-1996 or 1997? I got a deal on a ZZ3 at about that time, so if this is a "ZZ350", it may be the plain "ZZ" which is the earlier one. Still cool but maybe not at this price. Also, looks run hard.
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Old Sep 26, 2015 | 08:16 AM
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I believe that will be the one piece seal engine. Change over was 30 years ago, but to c3 guys that is late model stuff. Would need different flywheel.
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Old Sep 26, 2015 | 01:17 PM
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Originally Posted by chevygod
This motor looks like a ZZ crate 350, which I think had a square bore intake, not a ZZ3 or ZZ4, which were spread bore. If so, first of the ZZ motors, so maybe pre-1996 or 1997? I got a deal on a ZZ3 at about that time, so if this is a "ZZ350", it may be the plain "ZZ" which is the earlier one. Still cool but maybe not at this price. Also, looks run hard.
Got it. I automatically ASSumed it wsa a ZZ4. But yeah, if it's a square bore like you say an dhe's running a QJ, he'll need to get a different intake, carb, or adapter. The adapter, of course, will likely require a drop base air cleaner or a different hood.

Myself, if I had a QJ I'd switch to the ZZ4 intake or Edel 3701.
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Old Sep 26, 2015 | 02:11 PM
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Thanks for all the replies. I know I'm a long way out from doing a swap but should I start keeping my eyes out now for something and if so what should I be looking for? Ok, yeah that was a pretty open ended question. I'll keep reading, learning and looking.
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Old Sep 26, 2015 | 02:19 PM
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Ok, the piston tops down, the engines are pretty much the same. Yes, you can get forged crank-pistons and 4 bolt mains but if you aren't going to the track and turning 7000 rpm's that is not necessary. So if you don't need a rebuild, heads-cam-intake might be another option to consider.
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Old Sep 26, 2015 | 03:05 PM
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The big advantage to the zz engines when new is a warranty and roller cam.
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Old Sep 26, 2015 | 07:22 PM
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That's wayy to much money. Mine was 4200$ delivered 3 or 4 years ago. The used one has no warranty. No more ZZ4s. The base ZZ4 at 355 hp and 405 torque was a hell of a bargain . Not so with the ZZ5.
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