Quote:
Originally Posted by Rich Biebel
Build a 383....best bang for the buck in a street engine.
Stock 350 block...none of the 400 block problems...
I built lots of them....and with all the piles of inexpensive rotating assemblies out there now it's a no brainer and easy to do. You don't have to use a Stock GM 400 crank or the short GM 400 rods...
Only minor issue is rod to block and cam clearance and it's not much of a problem with any stroker type h beam rod.....
Stroker type rods usually clear a small cam with no problems.....
Easy to check during a preassembly...Only 2 pair of rods ever get close to the cam lobes anyway...
A decent stock block with little or no core shift just needs a little grinding at the bottom of the cylinders for the added stroke..
The cam to rod clearance is real easy to check.
I used strips of cardboard, or clay and a mirror....
A 383 has great torque and a perfect street strip engine...
400 blocks are nothing but problems...
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Don't ever go by core shift its a poor indicator compared to actual cylinder placement when the mold is put together.
I have seen block with zero core shift fail a sonic test and I have seen many blocks with very poor cores shift pass a sonic test.
The only real advice is sonic test for true results.