I kind of attached this thread to the dyno thread. But wanted to get peoples' opinions on who they have used to port their heads. I have Dart Pro One aluminum heads with 310 runners. I have been speaking to Jim V. - but wondering who everyone else is using. What additional hp does one expect to get from stock? Does this include port matching the intake manifolds? Thank you.

With a good port job we have seen 80+.


Mike



Roccard Marine Engines
www.roccardmarineengines.com
[email protected]
570-956-2840

Call Lynn Morris 405-631-3985 at Cylinder Head Porting. He has been porting heads since before I was born. Here is a pic of him working his magic...

Jims the man "Heads he wins".

id have em cnc buy a company building engines using the kind of heads you're runing.

Ok, Dart Pro Ones' - are they different than other types of heads?

I appreciate the information on the recommendations. Looks like the guy I was talking to, Jim V., has at least one vote.

Just give Lynn a call. I was just over at his place and he had a few sets of Harley heads and a set of Brodix Big Dukes he was working on.

I had my Dart's CNC ported by Indy Cylinder Heads they did a sweet job and were fast and reasonably priced

One thing to watch for the accessory bolts on the front of my heads were 7/16 the Dart's that I used had 3/8 bolts holes and I had to have some 7/16 to 3/8 studs made
good luck Don

There is different porting for boats, cars, drag. I would go with who does and knows boats. JimV.

Hands down JimV. Do a search on this forum just using his name.
Also he's one of the nicest guys in the boating community.