Need help on what can to use.

Boat is  74 Miller sprint no idea of weight

Motor specs-

454 my IV over .030
4” stroke
6.135 rods
Forged pistons 12cc dome
PC Heads not exactly sure on chamber I think they are 121 cc w/300 cc runners open chamber
Valve train Jewel rockers
Intake Hilborn 3” 8 stake MFI
Approx compression 9.5:1 with 30/50 quench
Goal for motor-

Pump Gas W/additive
 Cruising RPM 4000/5000
Max RPM 6800/7200

Not concerned with pump right now plan on redoing it at end of summer.
Will end up being b/c impellerw/inducer droop

Want Mechanical solid roller just bed to know what grind I should use.

Any ideas would be greatly appreciated.
   Thanks Jet Boat Maloney


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I knew the excitement wouldn’t last long!!!
Dilemma this motor is a beast!! Pulled heads and the fricken pistons have a dome bigger than most enclosed stadiums and the heads have a chamber so small they could be negative cc’s. Well maybe an exaggeration but they are definitely closed chambers. So I’m hoping if I run my aluminum open chamber heads I might be able to calm it down a little. What else can I do to calm this beast? Was planning on running a single plain intake with a 850 double pumper. On a budget just wanted to get wet ASAP. Don’t want to run all race fuel and don’t think this jacuzzi is going to hold up. And my old lady want to know why it isn’t going
in the  boat yet. Shit I just got it yesterday now it’s looking like she might need to get a raft if she wants to get on the water.
Any ideas on how to calm it down enough to at least run half avv gas and premium?


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Jumping back in !!!!
I’ve decided to jump back in the boating world and I think it’s about mft.
So I’m waiting on delivery on a ‘73 Miller just love the graphics it used to have an Oldsmobile and now it’s going to have a 468 BBC this motor is kinda special it belonged to my I guess you could say he’s my Stepdad but really he’s the guy that molded me as a youngster he also worked for my Dad when I was 11/12 years old and had been like a father since then. Unfortunately we lost him last year. So some how I ended up with the motor it was in a ‘ 69 Chevelle  he had years ago and he would never give it up when he was alive.... now I finally got my paws on it And that got the ball rolling. It’s a 468 the compression is a little hi side so I’m going to try and lower it s little but back in day that car Ran a  consistent low 11 sec quarter mile so I think it should do ok for now anyway. So here’s what it looks like. So see ya soon and I’ll keep you updated.

The intake,ride plate,steering,drive shaft,cradle,wiring-are sold!!!!!


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And FWD/REV lever & cable sold


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I’m interested in the fuel tanks. Can you post pics of the square tanks? Thanks!!

Yes tomorrow I have to dig them out.
Thanks Tad


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Also have a ton of other stuff I haven’t got to yet.
If interested in anything text
928-846-1827 or 928-412-1653
Of course everything is in good or brand new condition and you pay for the ride
   Thank you Jet Boat Maloney


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CP pistons brand new for a 496 Mark IV bbc
500.00


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Two 750 CFM Quick Fuel Marine carbs. Weiand BBC square port tunnel ram. With scoop. Fuel lines and linkage
1000.00 OBO for everything






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Fuel tanks-
2 ten gallon round tanks with fills 1-2 small dents stainless 300.00obo

◦2- ten gallon Square aluminum with fills  125.00 obo




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Go pedal
Floor mount with cable
◦100.00




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Rack and pinion steering
Steering wheel
Hub cover polished
Extension hub
Cable
150.00 obo




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Marine 65amp alternator external regulator
75.00 obo





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Cheap O gauges and tach
25.00




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