Common questions

Are there 305 heads on a 350 engine?

Are there 305 heads on a 350 engine?

It can raise compression by a full point or more on a common 8.5:1 350 with factory dished pistons. The chambers are much smaller than old 350 “emissions” heads- 76cc vs. 58cc. Unfotunately 305 heads only came with 1.84″ intake valves maximum with many earlier ones being only a 1.72″ valve.

What should I look for in a 305 head?

Not new heads, but instead, what casting numbers or motors should I be looking for while crawing the junk yards and the swap meets. There’s gotta be something better than stock, to keep my eyes open for. The motor’s been bored 40 over, and has a mild cam (204/214 at .050 dur.) with a dual plane intake.

What kind of intake valve does a 305 head use?

Funny thing is that the 1.84 intake valve 416, 601, and 801 castings flow as much as the 1.94 350 castings from the same era. Go to thirdgen.org and look up the porting articles on there. They are getting about 230-240cfm out of the above 305 heads from amateur porters.

Can you put 305 heads on a 350?

305 heads on a 350 – MR. WELLWOOD’S SHOP OF HORRORS You will find lots of hate on this one. Putting 305 heads on a 350 was a good way to bump compression back in the day when compression was low, and aftermarket heads were almost “unattainable.”

How many heads on a Camaro 350 engine?

A friend of mine put 305 heads on the 350 in his ’69 Camaro. Ran 11’s. Not sure what size cam but the carb was a Holley 750 double pumper. He’d burn close to two gallons of gas with every 1/4 mile pass. (You must log in or sign up to reply here.)

Funny thing is that the 1.84 intake valve 416, 601, and 801 castings flow as much as the 1.94 350 castings from the same era. Go to thirdgen.org and look up the porting articles on there. They are getting about 230-240cfm out of the above 305 heads from amateur porters.

How to get 350 horsepower out of a 305 Chevy small block?

Bolt a 500 cfm carburetor to the manifold atop the nitrous plate, and install a GM High Energy Ignition (HEI) distributor with 8 mm plug wires. Use a set of high heat-range plugs that can withstand the nitrous, and use a nitrous-compatible ignition control box to retard timing while running under nitrous.

Can you put a 350 Block in a 305 Camaro?

Noobies buy the first round. you can just put a 350 long block in with your 305 intake ant throttle body. it will run fine.

Do you need to change the heads on a Camaro 350?

They run fine. You do need to make sure that the 350 you use has the correct bolt pattern on the heads for the exhaust, and the TBI intake, but that is simple. The ecm, fuel system etc will easily supply a mild 350 with no changes. Most 350’s from those years should have the correct bolt pattern on the heads.

How much does it cost to rebuild a 305 Camaro?

A normal rebuild in your car would run about $2100, the problem with upgrading to a 350 from a 305 is the lack of a good core engine and that we have to supply a complete core to rebuild.

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Ruth Doyle