1985 305 & 1972 307

Yes. 307 head and 305 intake gaskets. Some 305 heads wont accept other small block manifolds. It is a missing bolt hole on the #8 exhaust.

So your saying I should just use the 305 intake manifold then? The 307 is probably worth more on eBay anyway$ :-)

Then the question; should I also get my 305's quadra jet running right and ditch the holly 2b on the chevelle? I'm thinkin I should ... put the $24.00 into a rebuild kit and see how it goes. Probably get it runnin on the 2bbl first just since I've never done something like this before. Hey will the holly 2bbl bolt onto the 305 intake? I would assume yes. Chevy got the interchangeability under the hood _so_ right. Transmissions to transfer cases are a different story, Ford & Dodge are good there so I'm told. But then ford & their engine-to-transmission nightmares......

GMC Gremlin

INLINE...

Yes, unless you are partial to the 2bbl Rochester.

Like I said, should be a Rochester 2bbl. But, correct, Go with the Rochester Q-jet!

Remember to get a new float and also make sure the primary shaft doesnt have TO much play.

Nope! Not without a vacuum leaking adapter.

Uh, i see a problem here.... the 305 heads have 58cc chambers.

They also have a very restrictive exhaust port.

305 heads are notorious for being crap. They are very light castings and more likely than not will show cracks if you mangaflux them since they are 20 years old. Not sure what cc combustion chamber Chevy used with the 307, probably 62 or 64 cc.

As the owner of a Chevelle I believe it deserves better than a used set of 305 heads. Spend a little on a new set. Unlike most every thing else you own your Chevelle is worth more every day you own it.

The distributor will not work. 85?s have a partial computer control and the distro will have an extra plug that won?t connect to anything on your Chevelle. (Believe me, I tried with an 83 distro from a pickup). The pushrods will work, unless you?re working with something really odd, all the small block pushrods are the same. Check them for straightness, though.

My 1972 Chevelle Sedan (4 door) with a 307 & complimentary cracked up corner is growing more valuable every day, really?

GMC Greml> > Uh, i see a problem here....

Oh ya, plus it does have a crack right in the middle of the carb mount... but I just want to get the darn thing running of the first time in like 9 months.

GMC Greml> > Uh, i see a problem here....