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Hey, I m new here and just bought a 87 S10 with a bad 2.8 and bought a 3.1 to replace it. Have the motor torn down to freshen it up some,it's all within specs but I have a few questions since GMs is new to me,what type rings were used,moly or cast,what gasket sets are of better quality Victor or Fel-Pro?
I've ported heads has a hobbyist with knowledge from a friend who's been porting for some thirty years,so that's the stage I'm at now trans forming the intake short-side to a higher velocity profile rather than tapping for increased CFMs,don't know if it'll work but I have nothing to loose with these poorly designed ports. Since I'll be using the 2.8 intake and TB should I be concerned with incorrect fuel ratio's? Later down the road I'd like to switch over to the TB from a 4.3 and was wondering if this mod is worth looking into and what corrections are needed for accurate F/A's(injector sizes OR computer adjustments) and when you open up the thyrottle bores of the 2.8 intake,would it be a good idea to venturi the bore for enhanced throttle response and air velocity cuz of the small displacement of the 3.1?
I've ported heads has a hobbyist with knowledge from a friend who's been porting for some thirty years,so that's the stage I'm at now trans forming the intake short-side to a higher velocity profile rather than tapping for increased CFMs,don't know if it'll work but I have nothing to loose with these poorly designed ports. Since I'll be using the 2.8 intake and TB should I be concerned with incorrect fuel ratio's? Later down the road I'd like to switch over to the TB from a 4.3 and was wondering if this mod is worth looking into and what corrections are needed for accurate F/A's(injector sizes OR computer adjustments) and when you open up the thyrottle bores of the 2.8 intake,would it be a good idea to venturi the bore for enhanced throttle response and air velocity cuz of the small displacement of the 3.1?
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