a 429????hhhhmmmmmmm

[Unit 5302]

Originally posted by Frank VandenBerg:
429 a dog? I don't think so. The Thubnderjet made more torque than the CJ and SCJ. The Boss was a good Nascar engine and wasn't that great for drag racing. A 70 429 is a good engine no matter which one it is. If it's newer than 72 it had big chamber heads on them. If it's a good price go for it.

LOL... Yeah, that 429 was a brute. The 1970 429 was rated at 360hp@4600rpm "gross" and 480lb/ft@2800rpm "gross". Do a net hp conversion to that thing and your talking more like 280hp and 380lb/ft. 10.5:1 compression is what got those numbers up there. If you were to put 10.5:1 CR on a stock 302HO engine, you'd be looking at 250hp or so and 330lb/ft. The ratings on the 429 Semi-Hemi are a bit skewed too. In truth it made way more than it's rating, as did the Cleveland 351 4v's.


Just spoke with my dad about that 429 engine. It raced in his class back in the early 70's. He was running a 63 Vert with 427FE. He said the standard 429 was a dog for the most part. He did say some of them ran, but most weren't any competition at all.