Quote:
Originally Posted by hamsterpower
Do what your heart says, because neither option will net a $ savings. If you have a need for hills and ramps or carry a full load often then the stronger motor MIGHT help. I say might because all that extra HP is from the big lobe of the cam, and comes in WELL above the revs used in normal driving. and the small lobe of the cam may actually give you less usable HP.
Combine that with the tall geared transmission and it gets tougher to see the power gains. My Civic has a B16 (170hp) swapped in from when I was a silly boy with dreams of speed. Yet with the taller but still short geared transmission from an Integra LS it nets mid 30s MPG easy. About what I got with the stock d15 (108hp) way back. Until I let the revs build up it bogs and strains the same or worse with the "stronger" motor because it is not usable power.
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This is good insight. I'm giving it a chance, hope I'm happy with it!