Engine options and decisions to be made
 

I could have sworn I had a 350. Everyone who saw it figured the same.

Turns out, my V1125TAI is a 1970 307 small block, 2bbl, 2 bolt main.


Ill be damned. Wonder if this means I picked the wrong plugs, or if the shop tuned it differently. I had a skip white HEI distrib installed and 3 weeks after i blew the engine (ring)

So, the plan was to check the block, and man was I shocked to see its a 307.

Good news is, its an original and numbers matching block. Bad news is, its not a 350, killing my hopes of a 383 without swapping blocks.

So the questions - what can a 307 produce? Is it financially stupid to work a 307, or should I start shopping for 350/400's?

Re: Engine options and decisions to be made
 

That's a tough call. Is keeping the original number matching block all that important to you? I mean is the truck something special that keeping the original engine would make it worth more in someone's eye, other than you? High optioned? Low production?
If HP is what you are after you will want to store that block in the shed and go find a 350 or 400 to start with. Not saying you can't get more hp out of the 307, just that you will spend a lot to make less than starting with a larger engine.

Re: Engine options and decisions to be made
 

I could care less about the numbers matching, but liked the idea of sticking to the original block, but not if its going to hurt financially to do so, or give me less options for parts and bolt ons later.

Sounds like a 350/383 is still the route to go.

Trying to decide now between:

Cheap: http://www.jegs.com/p/GM+Performance/755609/10002/-1
Mild: http://www.jegs.com/p/GM+Performance/749872/10002/-1
Wild: http://www.jegs.com/p/GM+Performance/969813/10002/-1

Re: Engine options and decisions to be made
 

A 307 can be made into a nice little daily driver, and it'll hold its own. However, it won't be a race car.
The 307 can knock down some VERY impressive MPG numbers though.

Re: Engine options and decisions to be made
 

Here's one you might want to look at, it has Vortec heads and a roller cam. You'd have to run an electric fuel pump though.
http://store.summitracing.com/partde...530282&FROM=MG

Re: Engine options and decisions to be made
 

Another option is to find a 4 bolt 350 and use the 307 crank to make a 4 bolt 327.