Thanks for all the input! right now I am going to reuse my stock crank/rods, and peanut ports are out. I am going to be purchasing a set of nice forged pistons this week and will hopefully have some new heads this week as well. I found a pair of 1256 2934, but need to do more research on them. they came off a running 7.4 but dont know if they would be worth it or should i just find some 049's

just found some complete 049 with covers for 300 bucks, good deal? take offs he states...

7164 is a oval port manifold- and you stated you have rectangle port heads, a bit of a mismatch there???

I prefer single planes on jet boat motors. But have seen many dual planes on 'em too...

I had a eddy carb on mine for the weekend, while the holley was being rebuilt, and lost ~200 rpm.

But then again a Vacuum secondary Holley 3310 shouldn't work on a jet boat, either...IDK???

What impeller do you have now, and what RPM will it pull?

Dan'l

Heads are 10114156, and the holley is a 9022-1030... I think I'm good to go on that. I think the previous owner just tossed a car motor in and ran it as such. I'll have to find out how to tell what impeller I have after some research. I know it said TD on the jet

If you are going a 'kit' anyways, why not stroke it?

489 kit from summit, for a 1 pc rear main: http://www.summitracing.com/parts/sca-1-91755/overview/make/chevrolet

Keep your rpms @ 5K or less, and run a big impeller, like a 'AA', great out-of the-hole, and cruise rpms are lower, vs an 'A' impelller.

Choose your cam wisely, being a gen V, a factory style roller would be a nice addition.

This cam in a 9:1 454 (460 in) pulled a 'AA' to 5K, ~500 hp, in a heavy azz Eliminator Daycruiser (thru logs and snails)
   http://www.summitracing.com/parts/hrs-cl120245-12/overview/make/chevrolet

A decent intake will help the combo, I'm using a Eddy Victor Jr single plane intake, and a 750 Holley VS.

Thats all I got

Dan'l

I have a holley 800 an edelbrock performer RPM q-jet 7164 intake manifold What are the thoughts on this intake mani? came on the motor with the boat, I also have  BARR marine CHVA 192 headers for it. I am looking into my pump after I finish engine. I planned on putting an inducer on it to help with getting motor up and running.

I have a 454 that I am boring .030 over, It is going in a 21' commander with a jet. I will be running stock heads( they will be decked and match ported, they are ☆ peanut port ) and it is a gen 5 block. I need a rotating assembly and have found a bunch online. I have heard to pick my parts but in my case I think a " kit" would be best. what are your thoughts on the skip white kit?
http://www.ebay.com/itm/BBC-454-SCAT-ROTATING-ASSEMBLY-WISECO-FLAT-TOP-FORGED-PISTONS-454-FT-4-280-2pc-/331596930716?_trksid=p2141725.m3641.l6368

this seems like its the best bang for my buck, I was also looking at the summit racing
http://www.summitracing.com/parts/sca-1-92249

thoughts? i know ring gap and being able to hold high RPM is key for a jet boat motor and i think these kits would be best for my application

From what I've seen my motor is probably salvageable, But you can get a stock marine long block from summit for 2800 shipped with $125 core charge(keep my core and rebuild later).   I am scared to buy a motor from someone on craigslist or forums unless they are well know. I need to do more research on that from my end. to many horror stories from friends that have been ripped off with bad motors.

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Hi all, bought my boat august knowing it had engine problems. Its a 97 commander 21 open bow with dominator jet. I got the engine pulled and found the main bearing spun and practically gone. anyways I am figuring out what I want to do, mechanic said if it were him he'd buy a long block and start over in terms of reliability. There was lots of metal sent throughout the motor and in terms of machine work it would be cheaper to start over than pay for machine work. I am contemplating doing the machine work and punching out to 468, I'm not trying to break the bank and want something that will last. I prefer to stay around 4k and stay on pump gas. Not trying to go 80mph, just want to cruise with family and maybe go 50/60 mph max. It is a gen 5, 454, 4 bolt in there now, has some automotive parts on it now that i need to replace (distributor is not marine, intake manifold doesn't match the Holley 800 it has on it. headers are Barr Marine CHVA 192, but other than that I plan on using everything that came on it. Any thoughts on what you would do? Should I just start over do a mild cam and stay 454 or punch out to 468? I have a buddy who builds engines who will help me out now.

No problem jarvis, appreciate replies ,all of them. After I told my uncle about this, he gave me a long block 454 sitting in his garage, granted he is 8 hours away.  I'm really pumped up about this project/ boat

I'll start a thread, Very excite for my first build. Feel like I have a great platform to start with.  I need to see of both spin freely, the pump had a small amount of play fwd and back, I want to make sure wear washers is good also. I'm almost 100 percent that this motor needs some sort of break down  so disconnect is eminent. Don't want tk make this two hard, but im going to be  thorough.

Once I disconnect the jet from motor I'll know what deal is, pump is clean no ,weird play in shaft, impeller is Clean and snooth, grate is not bent at all...I am going to see if motor spins, if it doesn't, I'm pulling it. My buddy who builds motors said I can bring it over after he finishes somone else's build.

Got myself a boat! Gonna dig into it next weekend