msouders88

I have a 1973 350 and need some ideas as to how I should go about a mild street strip build without going broke, the engine has about 90k original and has some cylinder wear - (a small lip at the top of the cylinder) - as well as a Head question, will #4 heads from a 1967 330 fit the 350, I have access to a pair for dirt cheap. This engine will be going into a 1986 Cutlass, my friends say I need to just go and get a Chevy 350 and be done with it - I told them if I wanted a Chevy I would have bought a Monte.

msouders88

Also the intake for the 330 will be included, but the guy said something about the intake being for a divorced choke - could'nt I just use my Q-jet from the 73'

joe_padavano

The divorced choke has the choke coil mounted on the intake and a rod connecting it to the carb. You can use your 73 Q-jet with integral choke, but the 330 intake does not have a choke stove provision for it. Your two options are the aftermarket choke stove for headers or replace the choke coil with an electric choke.

msouders88

Okay - so it is not a really big deal then - I take it that is pretty easy job to utilize an electric choke.
Should I get the 330 intake with the heads or keep my stock 73 egr manifold with the egr opening plated off - Is there an aftermarket intake that works really good with what I am doing.

joe_padavano

Depends on your intended use and RPM range. The Edelbrock Performer and Performer RPM are good choices. You can usually find one used for under $100. Just be aware that the exhaust side needs to be upgraded as well.

msouders88

I already have that stuff bought - I am working from the bottom up, I bought the dynomax full length headers (just the basic ones) - 2.5" mandrel bent the whole way back - Jegster double hump cross member, got a 1986 Monte SS Rear end - 1973 TH350 from the rocket - and all the shinny trimmings (except the valve covers) I am looking for a set of original valve covers that have OLDSMOBILE embossed on them, the ones that were on my 73' were beat to hell, beyond repair

msouders88

So judging by what I have read those 330 heads should bolt right on my 1973 350, is this correct since the bank angles are the sameor is there other things I need to watch out for other than getting hardened valve seats.

joe_padavano

Correct. Depending on how often you plan to drive the car, the hardened valve seats may or may not be required. They won't hurt, but on a car that's only driven occasionally, you may not put enough miles on it to matter.

The factory embossed valve covers were only offered in 1973-74, so they are a little hard to find sometimes.

msouders88

Great! I do plan on getting the valve seats done just to be safe - I do plan on making some passes on the strip here in Carlisle for the GM Nationals, and some drives with my local Olds club chapter.

Glennerd

Ok, I have the exact same engine combo. 73 350 and a set of 67 330 heads. 80,000 on 350 bottom end. The 67 330 has the same cam angle, but earlier didn't?

Glennerd

I also have the rpm manifold and headers. I just noticed that my manifold has plugs in the crossovers. I bought it used. I assume they don't come this way.