Depends on which part number they carry... if they're the 6025's then you'll pick up less HP/TQ compared to the 'new' 60259's which utilize revised (improved) combustion chambers, intake and exhaust ports, etc.
The RPM's are better than the GT40's ...but not by a
huge margin by any means, but they
are better.
What camshaft do you use? Josh makes a good point, in that the money could be better spent elsewhere. Maybe some good axles and a locker, for starters (looking at your sig).
Quote:
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"The eddy heads just aren't that great."
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Hey, now don't be knockin' my home-ported 6025's Josh!
I'm gonna see just how much power I can (or can't, LOL) squeeze out of them before stepping up to something more serious.