cam choice for hp500
#1
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Join Date: Nov 2005
Location: monrtose.mi
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cam choice for hp500
its time for a valve job and springs and i was thinking about upgrading the cams.what could i use without getting into porting and pistons dont want a complete taredown yet.
#2
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crane 741 or merc 525efi cam specs also a crane, both are very similar. shave the heads a little to raise your compression. they say you can do the 4 7 firing order swap for another 10 to 30 horse it all adds up.
cam specs were .610 .632 on both
I think dur. 234 242 112, efi 236 244 114lobe sep
cam specs were .610 .632 on both
I think dur. 234 242 112, efi 236 244 114lobe sep
#4
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Location: Malta - Europe
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crane 741 or merc 525efi cam specs also a crane, both are very similar. shave the heads a little to raise your compression. they say you can do the 4 7 firing order swap for another 10 to 30 horse it all adds up.
cam specs were .610 .632 on both
I think dur. 234 242 112, efi 236 244 114lobe sep
cam specs were .610 .632 on both
I think dur. 234 242 112, efi 236 244 114lobe sep
This can happen with a 502mpi with the a 741 cam??? There will be no issues with the ECM??
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I did all the modifications needed when I changed the cam, but since I read that 4/7 swap can get from 10/30 hp, I thought of trying it. but it seems that it works only with a carb engine.
#7
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I'm pretty sure it will work on the efi also. swap/ change the injector harness. On second thought doesn't the mpi ecm fire all injectors on compression strokes?