1983 H/O Dyno - 307 Stock

[jpoole]

Took the 83 in to get a 403 installed and had the completely stock 307 with 75000 miles dyno'ed before they pulled it. Thought I would share the numbers.

HP 150 (rounded up of course)
TQ 194

Here is the sheet, read it and weep 82 GT mustangs! I used to own those 82 Stangs back in 83 when I had my factory fresh H\O.

 

[86-blk442]

Wow that's really not bad (I'm assuming at the wheels) for the little 307.

 

[L92 OLDS]

Thanks for sharing the dyno results. Your 403 should double those numbers and then some. Are you doing any transmission or rear end work to support the new engine?

 

[jpoole]

Hope to get close to that. Have 10 bolt 8.5 from 1986 442 with posi going in and the 2004R has a monster in a box kit and 2400 stall monster lockup convertor.

 

[olds307 and 403]

Very cool to hear that these cars stomped the Mustang back in the day. People forget how gutlass the Mustang was pre EFI. I remember my BIL smoked a 83 Mustang with his 81 Lebaron 4 door with a stock 318 2bbl. The guy in the Mustang sold it and bought a 90 GT, much faster. Olds was competitive till 85, then EFI came in. The swirl port made it a joke, 55 hp behind the Mustang, instead of ahead by 15 hp in 83.