Dz302

[Dr79classic]

hey guys. Might sound crazy but is anyone running a dz302 Chevy motor in there g body??? I'd really like to hear about it and what everyone thinks of the motor itself. Thanks

 

[lilbowtie]

If you have a DZ 302 sell it and buy what you want - it's worth a lot. The DZ is a high revving engine and weak on low end. 11 to 1 compression and rated @ 376HP. If your car was set-up for it you could expect 7.80 1/8th

 

[pontiacgp]

it's a race engine that was built to live at high revs all it's life. It'll rev over 7,000 all day long but don't expect much tire smoke getting there

 

[565bbchevy]

The dz302 also has a mechanical cam that you will have to make periodic lash adjustments to, and the compression is too high for pump gas.
This engine is best suited for a numbers matching restoration, with Today's technology you can build a high revving, aluminum headed, roller cammed, stroker engine that will actually have the torque to get your car moving.

 

[clean8485]

Not the best match for use in a G body IMHO. Better off to sell it to someone who is doing a numbers matching restoration on a '69 Z28.

 

[Dr79classic]

Thanks guys. Keep it coming please. I was thinking it would be something different in my Malibu. 3000lb car with 456 rear. It's gonna b 60 over, world heads, all forged bottom, and haven't decided on cam yet believe it's a Vic jr intake. It's up in the air still but I think it would be unique. Please tell me more.

 

[Dr79classic]

Also if u know anyone who has 302 experience please tell them to chime in. Thanks.

 

[Dr79classic]

Now I feel dumb because I didn't say it's a fresh built motor. It's not exactly a stock dz. all new modern components.

 

[565bbchevy]

Super Chevy built a 302 years ago with a forged rotating assembly, AFR 210 heads and a big roller cam, single plane intake and a 750 carb and made over 500 horse but you would probably need a 4500+ converter to get it moving along with the big rear gear.
I like how they made it look like a factory engine and even machined the AFR's to mimic the factory cast irons and painted them orange.
I personally like big cubic inch engines that can also rev high.

 

[Pontiac455]

I built one last year for my buddys 69 Z28. Instead of using the solid lift cam I installed a hydraulic 30 30 duntov replica made by comp, nostalgia listing. Pistons were 11:1 forged . To get the compression down I used a set of Dart sportsman heads with a 74 cc chamber. Checked the compression with the whistle and it was 9:3:1. Strapped the mighty mouse to the dyno and she made 396 hp @ 7300. He likes it but, ya have to spin her up to make power. Gears and torque converter r a must in a automatic. His is a 4 speed. All in all the sound cool with the chambered exhaust.