Short block differences.
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Joined: Apr 2011
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From: hamilton waikato
Short block differences.
My 1990 coupe has developed a big end knock. So ive got to decide how to sort it. There is a rebuilt short block for sale locally but i have no idea if it's suitable. What should I look out for?
Cheers for any help on this one.
Cheers for any help on this one.
Pro
Joined: Aug 2009
Posts: 725
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From: Plano, TX
A crate motor from one of the local auto chains is always a good buy and comes with a warranty. The other alternative is to get a running one from a junkyard. If you buy a shortblock and change over all your accessories and heads/intake you will spend almost as much as crate motor once you pay for all the little things.
Safety Car
Joined: Aug 2009
Posts: 3,745
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From: Melbourne, Victoria, Australia
Hi
From my understanding there are two blocks for the early 80s to 90s.
The main difference being the 2 piece rear main seal up to late 1985, the later engines have the one piece rear main seal. The one piece seal assembly is bolted on the back of the engine, it is quite obvious.
That is the one you want.
There may be small differences but the transmissions bolt on to both engines and the engine mounts are the same.
From my understanding there are two blocks for the early 80s to 90s.
The main difference being the 2 piece rear main seal up to late 1985, the later engines have the one piece rear main seal. The one piece seal assembly is bolted on the back of the engine, it is quite obvious.
That is the one you want.
There may be small differences but the transmissions bolt on to both engines and the engine mounts are the same.
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From: WV
The zz4 is what I was going to put in my 89 until Pete K sold me on a 383 ..The problem with the ZZ4 is the 355 hp they have listed is with a carb, not fuel injection.By the time you put fuel injection and TPI on it your only looking at around 280 hp.. The motor also comes with the same heads the Corvette already has, so your spending money on something you have already . The cheapest route is to rebuild your old motor, or get a short block , freshen your heads and stick it back in..It all depends on if he wants more power or just a stock motor...WW
PS..I got my 383 built by Pete K, with dart pro 1 heads, custom cam, and all the other goodys for less then the zz4 is selling for, plus I have quite a bit more horsepower ...
PS..I got my 383 built by Pete K, with dart pro 1 heads, custom cam, and all the other goodys for less then the zz4 is selling for, plus I have quite a bit more horsepower ...
Last edited by WW7; Nov 13, 2011 at 02:31 PM.
Drifting
Joined: Mar 2009
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From: East Wenatchee (2hours from n e where) WA
There are several builders on this board that know the L98 like the back of their hand.
as far as crates this is a good one, will take a little tuning and bigger induction. http://www.crateenginedepot.com/stor...72-P764C2.aspx
as far as crates this is a good one, will take a little tuning and bigger induction. http://www.crateenginedepot.com/stor...72-P764C2.aspx
Last edited by Crepitus; Nov 13, 2011 at 02:10 PM.
