mfg Posted January 22 Report Share Posted January 22 The weight difference between an Avanti R3 engine 'long block' and an Avanti R4 engine 'long block' is (approx) .....?..... ozs. 1) no difference......2) ten.....3) twenty five .....or.....4) forty (no intake manifold, Carbs, blower, exhaust manifolds, distributor, water manifold, shielding) Link to comment Share on other sites More sharing options...
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