[blaster]

Decided not to build up a 350 motor and Im just going to put the 307 back in my 72 chevelle. My buddy talked me into putting a new cam and lifters in it. What is the stock specs on a 72 cam on a 307 and what size and type cam should i go with? The Summit cams seemed like a good deal.Nothing else in the motor will change but I will put duel exhaust on it and a slightly larger converter.

 

[cobra2411]

It's the stock GM 2bbl / 4bbl cam. Lift is .390 / .410 duration is like 196ish. I'd use the performer clone. It's the one with 204/214 duration. Stock converter will be fine. If you've got gears and you do the converter, then 214/224 cam.

What intake?

David

 

[blaster]

I just have the stock 2:73 peg leg rear end. So the 214/224 would be the one to get if all is basically stock? Will it make much difference and should i bother doing it?

 

[blaster]

Got it written wrong.......Will the 204/214 make much difference over the stock? I do have to buy a converter because i dont have the stocker anymore so i can bump that up to something better.

 

[sleeper]

I have the 214/224 in a 350 with 3.08 gears. I also have a stock converter. The 307 has a lot less torque than the 350. From my experiences I feel the 204/214 would be the best choice for you, especially with 2.73 gears. Just my recommendation based on my combination.

 

[Schurkey]

Best performance modification you could make is to stuff a TH 700 in that car. The 307 is similar to a 283--NO TORQUE. Coupled to a 3.08 rear axle, no cam change is going to make that thing move.

If you have a Potatoglide in the thing now...you won't recognize the car after you install an overdrive.

 

[blaster]

I have a TH350 in the car. The car is 100% original so at this point dont want to change alot. I just want to increase performance some while replacing old parts. If bumping the cam up a notch is going to help then i dont mind doing it but if not i dont want to bother.

 

[novaderrik]

i wouldn't bother with the 307. yeah, they run forever, but it is still a 307.
a 350 can be built cheap enough, and even the most worthless 350 will be way better in the torque and drivability departments than even a decent 307. and i'd bet you don't lose any mpg, if that's a concern.
and if originality is your concern, just wrap the 307 in Saran wrap and shove it in the corner of the garage, and tell everyone that the 350 is the stock 307 with a 4 barrel intake on it. then, if you sell the car, include the 307 with it.

 

[blaster]

I have been in the process of building a fast street 350 for it and storing the 307. I got frustrated and tired of spending money on the car so i decided to store the 350 for another car and keeping the 307 car original. Im not looking to go fast in it. Just want a reliable engine that runs nice. If i want to go fast i have my 72 convertible.