Building a 283, how to get 300 hp?

[CHEVY & GMC FOREVER]

Originally Posted by bigjimzlll

OK..lets think about this a bit. Back in the early 60's chevy managed 283 HP from a solid lifter 11-1 compression dual carbed 283. So to reach 300HP isn't going to be easy. Especially with old school tech. Compression is hard to make with the small bore of the 283. Also the old shcool 283 of yester year made its power way up in the rpm scale..it would rev all the way to 10,000 rpm...not really street friendly. If GM with all of its money and research could only make 283HP....I doubt if we can(with old school tech)

I agree with you totally those 283's were good motor's but they dide'nt start going till 8-10,000 RPM's, that's why one of my favorite GM motors was the old V6 401, 4.87' Bore, 3.58' Stroke, oh yeah now that was a motor.....

[Bowtie67]

GM made 315 Horse out of the 283 with a make shift fuel injection system, with todays heads being even much more efficient than even some of the best heads produced up to the mid 90's dont even compare to the current Vortecs heads (not that I am a Vortec Head Lover by any means). There have been many 283's pushed out well beyond 300HP without blowers, Turbos or even Nitrous. Smokey Yunick made 430HP in a naturally aspirated 283, another guy did over 800hp with twin turbos. If GM can spin up a 2.8litre V6 naturally aspirated to 430hp I see no reason 300+hp cant be done to a 283 respectable and also be dependable. Good heads, proper intake/carb or fuel injection & the right cam should have no problem especially with todays technology. Gas milage could also be optimum in an engine with shorter stroke & smaller bore where it doesnt suck so much air & fuel to breath when matched with proper gearing.