What's the biggest engine that will fit a 2003 z71 avalanche?

Question:
gasoline only

Answers:

How much would it cost to fix a broken head gasket, get driver side tie rod ends, and buy a new battery?

Hlind's "502" is more likely refering to the Chevy crate engine. Which would most likely fit but require some modifications and would need more to be "legal" emissions wise. Chevy now makes a 572 cubic inch crate engine that I bet would "fit" as well.
A Vortec 7400 (454) or Vortec 8100 (496) would be easier and cheaper though.

Car won't start?


The small block, 427, 505hp LS7 from the Corvette C6 Z06 would be the best in terms of easy of installment in comparison to amount of power. Apparently they are now making LSx block 511cu.i.(8.3L) in a small block!, but it's most likely expensive as hell.

What is causing this anti-freeze leak at the bottom of my 1991 Chevy Beretta?


Really for enough money you can fit basically anything. I saw a guy that had a V-10 viper engine in a Jeep Wrangler, with on and off road transmissions.

Buick regal engine swap?

dont know why the 8.3 isnt big enough. you could get a 502 in there if you want but a lot of trouble, and not gonna be streeet legal any more

I have a 3/8 auto drill, and want to use a hole saw on it?

Why wouldn't a 502 Be street legal? Maybe this is so in some states, but a 502 (GM Cadillac engine in the early to mid 70s) would be perfectly legal in most. Of course, you would have to cut fender wells, mod the suspension a bit, possibly cut the firewall, and eliminate ALL computers.However, to keep the truck mostly stock, a 5.7L (350ci) would fit just as well as the 5.3L (317ci), and you could keep your fuel injection and computers. The power difference wouldn't make it worthwhile.
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