Re: 454mag rebuild in progress
 

STORMRIDER,
I very much appreciate your thread / post illustrating your engine rebuild.
An engine looks so nice when its all cleaned up. If I may ask, how many hours did your engine have before you deceided to rebuild? Are the pistons forged or hypereutectic?
Thanks much for your time and post. Keep the pic's coming.
Quikdecision

Re: 454mag rebuild in progress
 

The pistons are speed pro 2399 forged.His motor probably had over 400 hours on it.

Re: 454mag rebuild in progress
 

The engine was 1989 mark IV.
It was put in the boat before I got it, so I'd go w/ JC on the hours.
Jeff did a great job cleaning up the block, crank and con rods.
I should have more pics by the end of the week.

Re: 454mag rebuild in progress
 

I have a similar engine 468" 731 cam same heads Dart Single Plane with a 750 Holley, and Eddie Marine Exhaust. I have asked in the past about my carb and I have been told 750 is adequate. I may be replacing it. I see you are going to run an 850. See big for this size engine, but I don't know that much. My question here for anyone that knows anything about engines, should I replace with a 750 or an 800. I have great throtle response, and the engine pulls great. It currently pulls about 5,300. Looks like the cam you are using has more duration than the Crane 731. Thanks

Re: 454mag rebuild in progress
 

I am running an 800 on my mild roller 454 and it still does fine on the low end. Even with my Dart single plane. Your 750 would be right on a car but I feel on a boat you need the 800 for the top end. May not help but I doubt it will hurt.

Re: 454mag rebuild in progress
 

Must have had to cut a lot off those heads to get 9.5-1 with 2399's. I didnt think it was possible unless you angle cut it. But maybe not if you dont bore notch it and dont unshroud the valves in the combustion chamber. I do that and it adds up to a lot of area when your done.

Re: 454mag rebuild in progress
 

I think 40mils are coming off the heads.

Re: 454mag rebuild in progress
 

Got the chamber down to a 114.Block was decked so that the piston is in the hole .010.I am using a .030 cometic gasket.9.4 to 1 is the final compression.

Re: 454mag rebuild in progress
 

man, you must have been working on these all night. :D

Re: 454mag rebuild in progress
 

Any updates??

Re: 454mag rebuild in progress
 

Waiting on a head gasket to come in. It's .030 so it had to be ordered.
Should have come in on friday.
But the short block is together... crank, cam, pistons & rods, timing chain, etc.
The heads should be on by monday/tuesday and painted right after that.
I'll go back to the shop mid week.

Jonh, hows the repower coming along?

Re: 454mag rebuild in progress
 

Here are some more pics from yesterday.

Re: 454mag rebuild in progress
 

and more

Re: 454mag rebuild in progress
 

And can anyone guess what kind of engine this is?

Re: 454mag rebuild in progress
 

Hey Storm,
Is that a stock GM 454/502HO intake I see?
I've been trying to off load one for $50.
Anyone want it?

Re: 454mag rebuild in progress
 

Pat, not that i know of.
Its bonze lined and completely ported by Rich Zul.

Re: 454mag rebuild in progress
 

OK, brass lined and ported, but basically the same intake...
I guess that GM stuff is not half bad... :drink:

Re: 454mag rebuild in progress
 

Alum Block ..... dart ?

Re: 454mag rebuild in progress
 

In Dennis Moore's book, he states the chevy intake is the best design, and all aftermarkets copy it.
But we will try out different intakes and carbs when its on the dyno.

Re: 454mag rebuild in progress
 

I have read that book cover to cover a few times... :drink:

Re: 454mag rebuild in progress
 

Don't take everything Dennis Moore writes as the gospel.

Re: 454mag rebuild in progress
 

Not at all. I just read it to learn about marine engines, not to build one. And to understand what Jeff is telling me.

Re: 454mag rebuild in progress
 

OK, back again with pics of the engine painted.

Re: 454mag rebuild in progress
 

I think I'm gonna go w/ the purple valve covers.

Re: 454mag rebuild in progress
 

Holy crap .... Storm it looks great .....

Re: 454mag rebuild in progress
 

I give, what is it?

Re: 454mag rebuild in progress
 

Its a ford block.

Re: 454mag rebuild in progress
 

:D :D :D
So the distributor goes in front then.
hmmmmm
:drink:

Looking Great Storm!

Re: 454mag rebuild in progress
 

he was looking for 1 post #15

http://www.offshoreonly.com/forums/s...ad.php?t=96037

Re: 454mag rebuild in progress
 

I am very interrested in reviewing your dyno results. I am rebuilding my 454's too. 9.7 CR, Canfield aluminum heads, roller cam, roller rockers... I would love to see your dyno results, because we are shooting for 500 + hp at 5400 RPM.

Re: 454mag rebuild in progress
 

Dyno coming soon.
Thing is, after I dyno, the engine is going into the boat.
And I prefer not to have the engine out in the cold snow.
So... dyno will be probably in 2 weeks.
Plus I still have some riggin in the boat to do.

Re: 454mag rebuild in progress
 

That other motor is a Ford with a Danny Bee belt drive.Looks like a C and C Motor sports Al block.Probably will have a C-460 or Blue thunder heads?

Re: 454mag rebuild in progress
 

OK, getting closer. Looking to dyno by early next week. Maybe even end of this week... but i'll have to cross my fingers for that.

Re: 454mag rebuild in progress
 

Storm, looks great I'll have to post some of my 454 mag rebuild. Question where did you get the cap for the power steering reservoir? Eric

Re: 454mag rebuild in progress
 

Eric, if you mean this... its IMCO.
You should be able to read the cap if you open the pic.

Re: 454mag rebuild in progress
 

Thanks, yet another part I need.

Re: 454mag rebuild in progress
 

.....looking good....

Re: 454mag rebuild in progress
 

Going on the dyno today.
Will try to post results.

Re: 454mag rebuild in progress
 

Great to meet up with you last Saturday Storm.
Good Luck with the testing!
We want to hear the numbers please...

Re: 454mag rebuild in progress
 

tick tock.....tick tock.....waiting for the results......hope everything went well today Rob....