Thread: 1972 429 in a 1970 stang

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I came across a rebuilt 1972 block 429 with the D3ve heads. This motor was built to be raced at a local track. The guy that rebuilt it assured me it was a strong engine. What I want to know is, is this motor worth putting in a 1970 mustang? Or should I keep the 302 in it? I'm already kicking myself for selling a rebuilt 351C. I want the car to be a strong running street car. This is my first muscle car project and any help would be greatly appriciated.

Kevin

the first time you drive it with the 429 in it, you'll throw rocks at the 302. Just my opinion. Don't expect it to corner as well though, lots more weight on the front.

That would be a great combo, but you'll need to upgrade the front suspension and the drive train and also the brakes. Going fast is cool, but you've gotta be able to stop.

Sounds like I should go with the 429! If anyone reading this has done this conversion before I would love to hear from you. I know I can get the mounting hardware from crites restoration, but what else am I going to need. I have heard I may need to change the shock towers and some front end stuff? Thanks for the replies I have heard so far, they are very helpful, I would just like to learn as much as possible before I dive in. Thanks again.

I wouldn't think you'd have to alter the shock towers. The '70 was a wider car than the earlier Mustangs. Ford offered a Boss 429 as stock from the factory, so I don't think you'll have any trouble fitting a wedge 429 in the engine bay. See the "Z" engine option on this page....
http://www.muscularmustangs.com/database/1970.php

U just need the mounts for a 70 Torino COBRA. I dont know what u would change the brakes to, unless they are drums, then u could go to discs in front. But its never gonna stop like with the 302 in it.

Thanks for all the information! This is a great forum. How about cooling? Will my stock radiator be enough?

Plan on finding a big 4 core radiator, or a very good aluminum one. Personally, I think you should just leave the 302 in it and give me the 429!!!!

I had a 429/C6 in my 69 galaxie XL/GT. I put a 351 W into my 69 coupe. Altho the rebuilt 351 doesnt have quite the pull of the 429 I cant imagine wanting more than what you can get out of a smaller 351 block. The weight of that monster is a disadvantage, you will loose knuckles trying to pull a plug. Think smart and serious before you open your wallet. Stan