1995 Chevrolet Astro on a 1995 astro 4.3 only the end lifters will pump oil to rocker arm Why?
on a 1995 astro 4.3 only the end lifters will pump oil to rocker arm Why?
What is your question?
i got some replacement cylinder heads from a wrecking yard.
the only difference than the original were they were positive stop rocker arms and the original were adjustable valve lash.
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why would some 4.3 have positive stop rockers and others adjustable
i tried loosen the rocker and oil did pump up and the engine ran better and then torque back to 20 ft. lbs. and the engine ran worst
For the same reason some astros came with steel wheels and others aluminum........Did you get a receipt for the heads? Return them for the correct ones.Good luck.
please explain the the mechanics when both designs will work on the same short block or do they make different short blocks for the two different designs.
why would some 4.3 have positive stop rockers and others adjustable i tried loosen the rocker and oil did pump up and the engine ran better and then torque back to 20 ft. lbs. and the engine ran worst
For the same reason some astros came with steel wheels and others aluminum........Did you get a receipt for the heads? Return them for the correct ones.Good luck.
please explain the the mechanics when both designs will work on the same short block or do they make different short blocks for the two different designs.
Good luck..............