Her69olds

Hello everyone, feels good to be back!! Just recently found and bought a 350 rocket. Looked like it was in great condition, had someone clean it up and paint it, the guy put an aluminum 4bbl intake on for me, not sure exactly what kind all it says I believe is performance 350, also he put a 4bbl quad jet card on it. When I bought the engine it had the original 2bbl intake on it and carb. Trying to find out possibly the exact year and what the Hp/Tq may be?? #39558 2/#5 stamped on the heads..

Indy_68_S

"Performer 350" would make it an Edelbrock (non RPM) Performer. Decent intake. A tiny bit better than stock flow with weight savings.

If it's the original 1969 2 bbl 350 (#5 heads seem to hint it might be...) & it's untouched inside, it's a low compression motor.

Orig 1969 350 w/2bbl was 250hp/355tq

Fun71

But a lot better flow than the original 2bbl intake.

"Low compression" in this context means it was rated 9.0:1 vs 10.25:1 that the 4bbl engines were rated. It should run well on modern day regular gas.

Indy_68_S

Ha!

Finally... A definitive answer for the age old question of stock iron vs. Non-RPM Performer !

Her69olds

Thanks for the replies, so my next question would be. Whats a good way to increase my HP to around 300hp. The only thing that has been added is the intake and carb. I have the same manifold and regular exhaust.

coppercutlass

If the engine is in good shape. You can do a mild cam , headers, good exhaust with an x pipe , and a good tune is very important. Also 3.23 or 3.42 gears in the rear will help in the acceleration dept. And a good 2200 stall will help too. Don't get caught up in the hp. Numbers. These engines bread and butter is tq. Which is king on the streets. A complete well sorted combo from carb to rear end will out perform 300 hp in a non sorted combo. Not saying it won't be but I think for most peoples enjoyment what I suggested is common practice for a mild street machine .

Her69olds

Any suggestions on kind of Cam, headers and exhaust?? Not a gear head plus I'm new to this sorry, not to many Oldsmobile owners around here where I live. I definitely need a new rear end, its a 12 bolt but one wheel spins. Don,t know anything about rear ends but I definitely want posi. From carb to rear end what would you recommend?

coppercutlass

I ran a combination some years back that was basic , yet thought out and ran decent numbers at the track . Sweet and simple with no major alterations or special tune etc. I'll post it up later tonight when I get home.

coppercutlass

Ok so the combo i had in my 72 was as follows. 350 with 9 to 1 compression. 1973 short block 1972 7A heads. Stock shot block, stock heads and rockers. Nothin fancy. It had a 260h comp cams camshaft, Edelborck performer intake , Edelborck 1405 carburetor box stock , full length headers ( old black jacks ) , I ran an hei distributor from proform at 14 degrees in box stock form. I ran a summit brand x pipe with hooker aero chamber mufflers with turn downs at the rear axle. I ran a th400 trans with a 2200 tci converter , out back there was a 3.73 gear with a posi. That combo was good for a 13.86 at 98 mph at the track. Nothing real fancy just well matched components

Joffroi

My 72 Cutlass Supreme has a 350 from a 69 Cutlass. I got it dynoed about a year ago and it hit just under 300HP and 300ft/lb tq from the rear wheels.


Although the previous owner was the one that built it, I have configuration details here if it helps out. http://www.oldsmobilecentral.com/for...eme-Olathe.php