Those are large oval ports, same as 049 or 781 castings.

thanks jaf302, do you boat in the hudson??? where's tillson ny?

Yes, I launch at Kingston most of the time. I have a Red 79 Wellcraft Nova and a 302 Formula basket case. Tillson is between Kingston and New Paltz

Those heads may actually make more power on a 454 than square ports. Under 500 ci. square ports are overkill. The rest of your parts sound good. Those motors will make over 400 hp. Except for those wierd exaust manifolds???

40scarab, no i'm not using those log manifolds, i'm buying
a set of bassett offshore headers used,they were on a 540 / 680 hp blocks
they look new( they are prob overkill for my application but i don't think they will hurt?


jaf302, ah your real close, a 79nova 250 was my very first boat
had alot of good times on that boat....

Sounds like you've got the whole package. Get it back in the boat and have fun!!

i made a mistake, the heads are 049, the casting made the 9 look like an 8...... any other cam suggestions????
should i use the 850 hollys or the Q jets????

heres the headers

stainless steel offshore headers

Straight out tailpipes
19.5 above cranckshaft center line

33" engin centers

Valve covers can be removed
with headers bolted in place

If you want to ad a little to it have a shop change the valves to 2.19 and 1.88. I had this combo in my flat bottom and it made 460hp with a single four barrel.

i think its got 2.19 intakes in it