Camshaft specs. needed, modification feasible?

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,636
Since that 2bbl was not likely calibrated for use with a higher performance Cam, all kinds of Operational issues can occur. Most are along the lines of Stumble and Bogs, due to the Idle and Off Idle Fuel Systems as well as the overall Fuel Delivery Curve, including when the Power Enrichment system turns on and off.
The Cam is certainly going to move the Powerband to a different Rpm Range, and that will affect low end Torque and Propping requirements, and also what the Max Rpm range needs to be.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
Messages
50,230
You will need to switch to a 4-barrel.
 

Scott06

Admiral
Joined
Apr 20, 2014
Messages
6,725
with this camshaft will I be ok sticking with the 2 bbl carb in the short term while I work 2wards a 2 bbl high performamce carb. and what type of performance to expect?
It will likely run ok with jetting changes but won’t see performance gains until you add a 4 bbl
 
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