I am currently building a 434 sbc(street car with some strip use). I just got my block and rotating assy from machine shop.I paid for clearancing,boring,decking,balancing etc...
I can see where they clearanced the rods for the cam and also where the block was clearanced for rods and counterweights.
My question is what is the min. clearance? I have read .050"-.060". I have .040" between counter weights and pan rail/webbing area in some spots.Also have min. .040 between rod bolt heads and pan rail (I have the eagle 4340 h-beams with the larger 1/2" bolt heads, L19 option)
Between rod and cam lobes I have .042" min on one rod. .044"-.055" on three rods and the other four are all ok.I did not degree the cam for this ,just dot to dot on chain(my buddy has my degree wheel,I will degree and recheck again)
Machine shop has a good reputation and builds a lot of performance motors( Lots of strokers 383's and 540's) But I don't think many are 4" stroked sbc's.
Any info appreciated, thanks in advance. Ray
Dart little M block steel caps (std. deck height and rails)
eagle 4340 4" crank,internal bal.)
eagle 6" h-beams w L19 bolts)
JE 4.155 flat top pistons
UDharold/Lunati solid billet roller small base