Performance 307 build!!

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Minion1186 said:
no offense when i say this,but good luck.
none taken at all. haha :blam:
 

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ponchoman49 said:
Olds made 180 HP from the 307 with but a different cam, slightly richer secondaries, dual snorkle air cleaner and stiffer valve springs and of course the dual exhaust system. 200 HP should be easily obtainable with a roller "Y" 7 A head motor with some of todays mods..

LOL... Thats on a engine dyno too. Put a transmission behind that and a rear-end. They said you lose about 30% hp behind a transmission alone. So dont think 180hp on a vin9 is what is at the wheel. I got 166hp at the wheels. And alot more upgrades. Dyno sheets to prove it.

Good luck!!!
 
thanks for the support everyone I AM OUT HERE TO PROVE 200HP CAN BE HAD FROM A 307 NOT TO RUN X AMOUT OF TIMES AT THE TRACK. I REALLY DONT GIVE A DAMN ABOUT THAT. just want somethin fun to drive 😀
 
80Maliboo said:
Also, you have an oldsmoblie engine. They arent exactly renowned for their performance qualities in decades since the 50's.

Sorry, but that's complete BS. Maybe from the mid-70's to late 80's when GM finally stopped producing Olds engines but it was the same lack luster power from all other GM makes as well during the smog era.

There is next to no aftermarket for them which means what is available is overpriced and will net a substancially decreased power potential over say sbc parts.

Again, not true. Can you open up a Jegs or Summit catalog, throw a dart at a page and hit an Oldsmobile part like you can a Chevy? No, but just because it's not listed doesn't mean they don't carry it. There's a huge amount of aftermarket parts for an Olds now than there has every been.
Is it anything near what a Chevy has for availabilty? No but that's whats nice. You don't see everyone and their brother with the same combination out there on the street.
Parts aren't overpriced by a lot. Yeah, an Edelbrock Performer RPM intake is around $100 more than an equivelant Chevy intake but like everything else, its just supply and demand. The key with building an Olds engine is realizing you don't need a brand new intake. A used Edelbrock RPM in good condition will go for $100. Bead blast it and its brand new. It's all about shopping around.

If you want to prove a point, prove a point to yourself and accept advice of people who have been arround the block a few times and ditch the olds engine. I have not heard of someone building an olds engine since the 70s, and thats for a reason.


Wow you must live under a rock! Your the guy that us Olds guys love pulling up next to on the street. Seriously, your correct on a few of your points but your view of Olds performance and Olds engines in general is very misguided.
 
[quote="smallblockFTWim not shooting for 435, im saying it can be done. im gonna try all the tricks i can, (milled heads, 2.02 1.60 valves with the exhaust turned down to 1.50, deck the block, thin gaskets.) just cheap tricks to see what i can do.[/quote]

You better know what your doing. Your following a build from Dale on ROP who built that 307 for the engine masters challenge. A lot of the stuff he's done is some pretty tricky machining, etc. Just reciting what you read in a magazine will not make an engine run. Dale has a TON of hours just in the heads alone on that engine.
I would not consider that 435HP 307 to be one a young guy should start out trying to duplicate. Maybe someday but you need to stick with something a bit more realistic to get your feet wet.

Also keep in mind, your not breaking any new ground here. Guys have run 307's in the 11's for years so we know they can perform. However, these cars have a LOT of gear and the spin the crap out of them. Their rear gears typically are in the 6.xx range.

The issue here is that all of what your planning to do to get your 307 into the 14's could also be done to a 350 Olds and you'd be well in the 12's AND be much more driveable.
 
"The issue here is that all of what your planning to do to get your 307 into the 14's could also be done to a 350 Olds and you'd be well in the 12's AND be much more driveable." He is right and it bears repeating. For the same money and the same work you would have an engine / car that is faster more reliable & much easier to actually drive. To prove what is already long been proven makes no sense.

Maliboo, Lots of people out there that think like you do until somebody else gets the opportunity & takes their money then they just shut up & disappear. Ask me how I know :rofl: The truth is or the facts are that all engines have their pros & cons some of which make certain engines better for certain tasks. The SBC 1 was not superior to the other three 350s of their time just the most common. The single biggest thing it had on its side was economies of scale.
 
jrm81bu said:
80Maliboo said:
FYI in the world of performance anything that is arround 1.2-1.5 hp per cube is considered MILD.

Wow, so a 600hp 400 small block is mild. And I guess that would make a ten second car slow too, right?

600 horse 400 is on the high end of mild yes. 10 second cars arent slow no. I didnt make any reference to ET's being slow or fast.

For instance, when I get my 400 together Im looking at arround 500-510 horse. It will be a very mild 87 gas motor with 9.7:1 compression. You think that adding another 90 horse at that point will make it radical lol?
 
Minion1186 said:
i'm sorry but what the hell is wrong with olds,i have a 1973 (smogger year) 350 olds making 402 engine horsepower/500 torque,so you cant sit here and say oldsmobile never had performance cars.This engine was in an 86 cutlass drag/street car,gutted interior,3.42 posi rear and slicks and it ran 11's flat.

Im sorry but One or more of your numbers is wrong for that to be truth.
Minion1186 said:
having one built up for 435 horsepower,dream on.

Hear Hear
 
smallblockFTW said:
im not shooting for 435, im saying it can be done. im gonna try all the tricks i can, (milled heads, 2.02 1.60 valves with the exhaust turned down to 1.50, deck the block, thin gaskets.) just cheap tricks to see what i can do.

wtf?

YOU Should be happy to see 160 horse.
Im saying that as kindly as i can of course. Im not trying to flame anyone, just stating something.
 
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