435hp Olds 307!!!

[theoldsone]

I was looking around the Internet on Olds motors, and I wondered "has anyone really bothered to truly beat the most hp out of a grandma...I mean a 307". And I ran into this article...
http://www.hotrod.com/articles/0911phr-oldsmobile-307-engine/

Wow that's very impressive. 99% of people bag on these motors and say they're junk. Guess if Olds where as popular as Chevys the recourses would be out there to match such numbers. The tourqe is instantaneous! 327 ft lbs of tourqe @ 2500 rpm's, and it's pretty much flat throughout the band. Peaking at 430 tq @ 4600 rpm's. Now I'm not getting any ideas to build a 307. But imagine this is what Oldsmobile did in the 80's with the 442's and the H/O's. Or maybe put something like that in a stock 442 cutlass. Matching #'s and with 435hp, mind blowing.

 

[Streetbu]

Hahaha, yeah. Bet that would cost you well over 10k to duplicate, if you have the knowledge and ability. Probably closer to 20k to just buy it from them. You can make a heck of a lot more power, for less money with a SBC, BBC, or a LSX engine.

 

[theoldsone]

Hahaha, yeah. Bet that would cost you well over 10k to duplicate, if you have the knowledge and ability. Probably closer to 20k to just buy it from them. You can make a heck of a lot more power, for less money with a SBC, BBC, or a LSX engine.

I know that. I'm pondering about the fact that they actually built something most people wouldn't, and get results like they did. The point wasn't if it's better than a SBC or BBC or LS. People build the craziest things. It's just something to admire.

 

[Canon_Mutant]

Have to admire the ingenuity but how do you make that much power with those naturally aspirated flow numbers? But, even if true, this it precisely why I spent $6K on a big block with an all aluminum top end making similar HP, noticeably more torque that weighs 40 lbs less than my 307 did. But, at the end of the day, they have all of this money wrapped up in an engine with paper thin cylinder walls, unproven block mods, and even some unproven internals [paper thin wrist pins, custom made pistons etc.].

 

[Streetbu]

That's where innovation comes from. In this case though, it seemed like they just threw everything at it that has already been done to other engines in order for it to make power and overcome it's inherent design flaws. Thats all I was saying.

 

[lilbowtie]

Impressive numbers but not for the money thrown at it. Look @ some SBF or SBC 302 builds and what they can do. I have a stock 350 (L-82 short block) w/ iron 2.02 chevy iron heads that's pulls 450 HP @ 6200 - I'll sell it to you for $1500.00

 

[565bbchevy]

While it is an interesting build with all the machine work, custom parts, pounds of epoxy and ridiculous amount of man hours it just further validates why not to waste time on a 307 for a performance application.

 

[pontiacgp]

I put that in the same league as mountain climbers.....just because it can be done why do it

 

[MrSony]

reminds me of the new engine masters I saw. They got 650hp out of a rebuilt 305, aluminum heads, roller top end, etc with nitrous before it melted a piston.

 

[565bbchevy]

It's too bad that for all the inexpensive aluminum heads out there that no one ever designed a good flowing head for the 307's small bore and have combustion chamber size options to raise the compression, I think along with the standard performance upgrades the 307's could have made respectable power.