Home › Forum › Ask A Member › Differences between ’50’s era 30, 35 and 40 hp big twins? › Re: Differences between ’50’s era 30, 35 and 40 hp big twins?

#31296
Leon
Participant

    Well, be careful there, friend, the powerheads from the Super Quiet 40’s wount bolt up to a clamshell style Big Twin. The rear half of the engin mounting is completely different.