hi,
Im planning on building a duromax 420ccc with the following mods below, with this engine how much horsepower do you think it can make on pump gas?
stainless steel valves
ported/milled cylinder head
retainer/keeper set
lash caps
chrome moly pushrods
1.3 ratio roller rockers
50lb dual valve springs
billet rod
360 cam
34mm Mikuni
carb manifold
UNI air filter
billet flywheel
3 stage header with muffler
Im planning on building a duromax 420ccc with the following mods below, with this engine how much horsepower do you think it can make on pump gas?
stainless steel valves
ported/milled cylinder head
retainer/keeper set
lash caps
chrome moly pushrods
1.3 ratio roller rockers
50lb dual valve springs
billet rod
360 cam
34mm Mikuni
carb manifold
UNI air filter
billet flywheel
3 stage header with muffler
