On Wednesday, Chevrolet Performance announced the ZZ632/1000 — a naturally aspirated 632-cubic-inch (10,348 cc) V8 producing 1,004 horsepower and 876 lb-ft of torque on pump gasoline.

While 100 hp per liter may not be an engineering marvel today, delivering a crate motor that’s sized to embarrass every other powertrain installed into a production vehicle is an achievement in itself. This 10.3-liter behemoth makes the 8.4-liter V10 installed in Dodge’s Viper (rest in peace) look like it’s supposed to be fitted to a riding lawnmower. Of course, it’s also huge in comparison to literally every powertrain we’ve seen on a project car that didn’t source its parts from vintage aircraft.  (Read More…)

Paul writes:

Hello Sajeev,

This is my second time writing in about my Oldsmobile. I solved the cooling problem with a mechanical fan, however now I am having another problem. As you may recall I swapped in a ZZ4 GM Performance 350 CI motor, and now it will “diesel” for awhile after I shut it off. It only does this after it has had a chance to warm up. Do you have any ideas for fixing this?

Thanks,
Paul (Read More…)

Paul writes:

Long time listener, first time caller. I have a 1982 Oldsmobile 98 Regency Brougham, that last summer I ripped the 307 out of. It now has a Chevy ZZ4 crate motor, backed by a TH 350 transmission. (Gasp! My hero!!! – SM) (Read More…)