How much did you pick her up for!!?!?!?!
Should build up that 4.3L(262) rather than a SBC.
You could get some high numbers out of her easily. Finding aluminum heads on the other hand are extremely hard to find for the 4.3L.
However, I already know what engine your going to put into her.
When you do, your going to notice that your fan will be hitting the belts and pulleys, etc. Your going to have to go to an electric fan set, and a 1996 Dodge Intrepid has the correct measurements to be mounted in a Gen.1 S10 without any kind of customization, but your going to have to do a reverse mount with the fans.
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Or you could get a Corvette's cooling system. That'll work perfectly.
Hub/Disc conversion to seperate Hub and seperate Disc is a must, or go to a Corvette hub and get some high end discs. Rear disc is another must.
What kind of steering do you have? Power or Standard?
With the 86' having the 4.3L means that the cross member has been altered, or completely changed to fit the 4.3L. I had to do the exact same thing for the 4.3L to fit into the ol' S10.(However she is a 88' S10.)
Standard, or Automatic? If Automatic going to a SBC will require a floor shifter, a column shift will not clear the manifolds/headers whichever you will be using.
Gonna tub her? Or drop her? Maybe both?
Tom.