then you can only use oem rods, there isnt an aftermarket rod that uses the .943 pin that i know of, most all aftermarket rods for the vipers use a .927 pin size.
the problem with the oem engines and forced induction or nos is this, and maybe someone will chime in on this alos
the pistons are junk, ring lands are to far to the top to hold too much pressure, in other words they are too thin and the compostition of material is weak, thus under too much pressure from a blower, turbo, or nos and the ring land will start to crack, eventually failing.
the rods are made of powder, thats right a powder, then stamped into the rod, thus the rods are only good for around 650-700 hp, and being of powder they have a lot of give and flex, resulting in breakage. not being able to stand up tto the pressure there fore pounding tthe crap outta the rod bearings.
now also if you were running nos, and had to turn the crank .20 you seriously need to get it professionally checked for straightness, i tried three cranks for eddies motor, every one bent. from .26 thousands to .40 thousands.
an easy build is going with a K1 rod, which will bolt to the oem crank, and uses a .927 pin, or you can also go with a sbc rod, turn the crank to a 2.100 but you still would need aftermarket pistons to use the .927 pin
billet mains are prefered on big builds or big shots of nos, the oem main caps are small and weak and ahve a tendency to walk around on the block a bit.
plus if you are doing a big shot, upgraded valve springs and push rods should be used , due to the increased pressure on the entire engine .
this is why I quote close to 10k on a short block,
you really need someone that has a relation with viper blocks, a normal ol time sbc builder is not the way to go
