Re: Am I Crazy?
I think the loss of torque is going to be very noticeable. These trucks are heavy and torque sure helps offset that weight! I also think your mileage is going to go down since the engine has to work more to move that weight.
If neither of those things matters, go for it. Build it and have a blast doing it, not like you can't pull it out later and put the 400 back in.
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1970 Blazer with a 400 sbc and 4" lift
1980 Pontiac Trans Am, 455 Oldsmobile
2012 Kawasaki Concours 14
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