The "Shermanator" article in the October SuperChevy magazine states that they start with a GM Goodwrench short-block. In the article they also state that since the short-block is not modified that it is covered under the factory warranty. I've seen only the Goodwrench long-block advertised and have yet to find a Goodwrench short-block listed anywhere. Where do you find a Goodwrench short-block for sale?? Thanks for any help.
The Shermanator uses a GMPP ZZ4 shortblock, it is $1995 through Scoggins or Pace. Scoggins dickey also sells the L31 Vortec shortblock, 4 bolt main, 5.7 pm rods, 4VR cast pistons, cast nodular crank it is $1499
ZZ4 has forged crank, pm rods, hyper pistons, dont know what it is rated too, I know Super Chevy has been using the ZZ4 sb for their Danger mouse series and it has been holding up well to all the dyno runs and thrashings.
I'm a bit confused still....did I misread the article in SuperChevy or is "GoodWrench" synonomous with "GM" as far as crate engines go. I thought the "GoodWrench" crate motor was the base, no frills long-block retailing for around $1299 from GM. Maybe the article was inaccurate...we all make mistakes. Thanks to anyone that can clear this up for me.
The article also said it had cast pistons. Unless that's an error in the writeup, then I don't think it's a ZZ4 shortblock being used.
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Your right they are saying it is the GM Goodwrench with cast pistons shortblock, In another article he is using ZZ4 shortblock, the super chevy one I believe is his budget crate, to an extent. so that sounds like the L31 shortblock.
I'm happy with my 350HO. $2K for the long block isn't a bad deal. I figure I'll "break it in" for a while and then throw the Hot Cam and do the heads to accept 1.6 rollers. My buddy dropped a ZZ4 in his '73 Vette and is extremely happy.