Originally Posted by
arkansasbowhunter
hey guys when reviewing the parts catalog for my motor a few different parts. I am very new to this stuff and aspiring to learn so any help appreciated. What I found is that the intake manifolds are different, throttle control cam, and bypass cover assembly (obsolete from online stores I looked at).
When I replaced the 25 to 30 carb, the intake holes were a perfect match, is there any other difference in them which would necessitate ordering the 30hp.
It also states different throttle control cams. What would this do for the motor? the butterfly opens all the way forward as is. Does this affect timing or something?
here are some part numbers I found
25 hp 30hp
manifold 396788 396790
cam throttle 334750 326876
bypass coverf 433567 436025
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