Ayuh,...in short,if I use the new stroker crank allong with the old pushrods,harmonic balancer and a flexplate(automatic) from a 86-earlier 1 piece RMS 350 will it all balance out?
Ayuh.....thanks for pointing out my short comings......feel better about yourself?bondo said:Ayuh,...
You'd better do somemore Learnin',... Your questions aren't making a whole lota Sense....
As noted, your question asks about a 377,+ your discription is about a 383,....
Btw,....Pushrods have Nothing to do with Any of this....
In the realy real world that I live in itsbondo said:The 1986,+ Earlier motors are 2 piece rear main seal crankshafts with a 3, 1/4" bolt pattern....
The 1987,+ Later motors are 1 piece rear main seal crankshafts with a 3" bolt pattern...
So, if you bought an external balance, 1-piece rear main seal crankshaft w/a 3.75" stroke, this will require a "400" damper and flexplate- ones that are counterweighted for a 3.75" stroke crank.greenmoonshine said:Ayuh.....thanks for pointing out my short comings......feel better about yourself?
Yes what I meant to say was connecting rods,not pushrods.....my bad,but I am building a 377(350 block,stock 5.7"connecting rods",3.75 crank and 4.00 bore)now if it were bored .030 over yes that would make it a 383 but I am not so theres ya some learnen's Bondo......
In the realy real world that I live in its
The "85" and earlier(before) that are 2 piece
and heres the real kicker
The "86" and later(after) are the ones with the onepiece
maybe you should do some "googling" before you post
GM :thumbup:
The '85 and earlier crank flange bolt pattern is 3.58" diameter.bondo said:The 1986,+ Earlier motors are 2 piece rear main seal crankshafts with a 3, 1/4" bolt pattern
Then why is the 86+ listed as externally balanced if the counterweights are drill from factory to make it internally balanced?This is the part that confused me...cobalt327 said:the crank was drilled to internally balance the crank, and is seen on all SBC's, as a matter of routine.
The counterbalance added to the 305-type, 1-pc. RMS flexplate is only there to account for the (now) missing counterweight that was present on the 2-pc. RMS cranks. If you look below, you'll see the difference- and why the counterweight is needed.greenmoonshine said:Then why is the 86+ listed as externally balanced if the counterweights are drill from factory to make it internally balanced?This is the part that confused me...
Not an OEM damper. There are aftermarket neutral balance dampers that can have counterbalance weight added to make them compatable w/an externally balanced engine.can the original balancer off the 350(neutral balanced) be drilled and fitted with weights to match the 3.75 stroke for balancing?
