Hi guys. Can anybody tell me what parts from other engines fit my '84 307. Such as heads, cams, intakes, headers, etc. .
Believe it or not I've gone through the same thing...try this site I'm sure it would help: http://oldsgmail.com As far as intake, I know the 350 olds would fit...if its the "y" vin code. I think its in the middle of the vin. The vin code "9" is a 307, it just has crappier heads and a full roller cam. The "y" code has better flowing heads and a hydraulic cam. Here is the difference between the 2...the "9" had better HP, while the "y" had more torque. As far as I'm concerned I want torque on HP cause torque is what gets to the ground. Hope this helps you out. Oh yea and BTW I have the "y" High output in my 84 Olds. Hope this helps :TU: Larry
403 is a small block Olds as well When the 307 in our 86 Regal daily driver got tired we replaced it with an Olds small block 403. They were made from 1977 to 79 and were used in some Trans Ams, Pontiac station wagons, Caddys, and of course full size Oldsmobiles. Painted black to match the 307 fitted Olds 350 heads to raise the compression ratio with minor bowl work and a 214 214 cam this made a nice combination. It is a drop in replacement for the 307 and operates on the computer to pass emissions just fine. The aluminum intake on your 307 will fit the 403 to reduce the weight of the heavy iron intake. All small block Olds parts will pretty much interchange. The cranks have the same stroke, but the balance is different. The heads on the larger displacement engines have larger chambers so basically are not downwardly compatable. All small block headers will work. Exhaust manifolds from 307 made in 86 and 87 with 7A heads are different doe to the smaller ports. Otherwise all SB exhaust manifolds are the same.
thanks guys. Here's the deal. Im turbocharging the 307. It's and 84 Electra. I want to know what compression I have? Also I need to find some shortie headers because I don't want to make my own. I'm totally new to buicks, so please help me. My engine is the "Y" code. Also, where I live there are not much Buicks or Olds whatsoever, so I can't go to the junk yard and buy stuff.
Compresson on the 307 is 8:1 if your going to throw a turbo on it I think the optimal comp is 7:1 if you wanna put a turbo on it. I really dont know if the 307 may handle it though...My 307 is basically stock, but then again I didnt get my 442 to race, just love cruising it to car shows and driving it. Hope the compression numbers help you out!:TU: Larry
thanks.. it really did help. It is a 8.0:1 engine.. which is very safe for just 9psi of boost. Anyways.. do you think I can swap my stock manifolds left to right and right to left.. so the exhaust side faces the front of the car..?
That sounds like quite an ambitious project! Unfortunately, even if you double the 307's power...a stock or mildly rebuilt 455 would have much more power! Just a thought.:Brow: Plus, you should be able to do the 455 cheaper...unless you happen to already have all the parts AND know-how to make it work!!:TU:
you sure about that?? maybe you could have more torque, but at what cost? Where i live, I you find one big block you are more than lucky. People even look at me weird because I have an 8 cylinder buick. I know what you meant, and if I lived in the states it would be true. But my only feasible option to make good power with an accpetable fuel economy is turbocharging. I wish I could find a nice big block so I could boost the hell out of it. It would be nice to have some 1,000 lbs/tq. Wouldn't it?
