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  1. R

    Repowering 454 to 8.1 - How much height and shaft length

    Swapping out a pair of 454's with some newer 8.1s. I know that the 8.1's are about 1 1/2 inches taller but I'm also going from Borg Warner 72 transmissions to Hurth 63A downangle transmissions so the engines will need to be lifted up a bit on the transmission side to match up. Does anyone know...
  2. R

    454 swap to 502

    I'm looking into all options for a repower. My 88 Crusader 454s are getting tired with 1700 hours on them. For some added performance can I get a set 502 blocks instead 454's. I guess what I'm asking is what can I use off the old 454's? I'v seen some 502's ready to go with the intakes included...
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