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There is basically no difference. 305 is a Chevy engine and the 307 is a Cadillac engine. They are both the same and assembled by same company
Well, on the other hand, it depends on how you look at it. The 305 Chevy is a 265 stroked with a 350 crank. The 307 Chevy is a 283 stroked with a 327 crank.
In theory, the 305 should produce it's best torque at a lower rpm than the 307. However, the 307 should be able to rev higher and produce a higher peak horsepower. Kinda depends on what you need it for.
There is also a 307 produced by Oldsmobile that is a V8 engine. It shares no other commonalities with a small block Chevy.
What else can I help you with?
Will parts from a 305 motor fit on a 307 motor?
no I respectfully disagree. I am running 305 Chevy TBI heads on my 1971 Chevy 307 and all is very well.
Are the motor mounts the same on a 307 and 305 chevy?
yes
How can you tell 305 from 307?
This is 305:|And this is 307:|
Will a 1987 Chevy 305 fit in a 1966 Chevy PU and where would I get the motor mounts?
Yes, a 283, 305, 307, 327 etc will fit. You should be able to use small block motor mounts from 1966
Is a rebuild 307 motor for 1986 cutlasses supreme better then a new motor?
A rebuilt motor if done right is just as good as a new motor.
Will Chevy 307 pistons fit on Chevy 305?
307 pistons are 3.875" diameter. 305 pistons are 3.736". It might be possible to bore a 305 large enough to accept the 307 pistons, but the wrist pin location would be .230" off because of the different stroke. In short, no.
Can you put a set of 307 heads on a 305 block?
Yes you can.
Did 1986 caprice come with a 307?
no comes stock with a 305
What motor is a truly stronger motor 305 or 350?
Both are strong engines, but the overwhelming consensus is that the 350 is a better engine, and I agree.
What is a 305 motor?
G.M's 305 cubic inch V8 motor is a 5 liter
Would it be ok to put 305 heads on a 307 block?
Yes, I've got a 307 running 305 heads in my old truck. I read somewhere it's actually worth a few extra horsepower
How do you set timing on a 305 motor?
what are the timing marks on a chev 305 motor for the year 1995.
