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383 crankshaft
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Which crankshaft for mild 383 budget build
Eagle
0%
 0%  [ 0 ]
Scat
83%
 83%  [ 5 ]
Callies
16%
 16%  [ 1 ]
Total Votes : 6

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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Tue Jan 31, 2012 4:11 pm    Post subject: 383 crankshaft Reply with quote

I'm going to put together a 1-PC rear main seal motor for my boat and putting together a parts list. If the motor sees 6000 rpm it will be lucky. Which crankshaft for mild 383 budget build, Scat, Eagle, Callies?

I'm really only considering Scat or Eagle due to price but threw in Callies for the hell of it.

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clay
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PostPosted: Tue Jan 31, 2012 9:56 pm    Post subject: Reply with quote

I'm basing my vote for Scat because I beat on one in my 383 for years with nitous and the Procharger - finally made 609 rwhp and turned it to 7000 a bunch. This was the 9000 series cast. Clay
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af2
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1933 Willys Coupe

PostPosted: Tue Jan 31, 2012 10:14 pm    Post subject: Reply with quote

Same as Clay. I have measured a couple of 9000's and they are nice and round with a good radius.
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William Jones
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PostPosted: Tue Jan 31, 2012 10:50 pm    Post subject: Reply with quote

The sizing and finish on the scat stuff is much better than the eagle stuff I have dealt with.

Bam

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Big Dave
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PostPosted: Wed Feb 01, 2012 11:31 am    Post subject: Reply with quote

As much as I favor the Callies crank, at that price point, it is still forged over seas. Both Callies and Scat machine their cranks in North America (Scat is running out of a warehouse just south of the border in Mexico and Callies is in Ohio) on American made CNC machines. The Chinese use German made CNC machines which are just as accurate as the American made machines, but the Chinese do not have good tooling and they do not take them out to sharpen them often enough to maintain quality (you do get what you pay for in tooling).

Big Dave
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SMOKEmUP
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PostPosted: Wed Feb 01, 2012 1:25 pm    Post subject: Reply with quote

Sounds like Scat is the way to go. I just have one problem with them, their name. Who in their right mind would name a company called Scat?

I found a rotating assembly on ebay from Skip White which I think I'll use.

I'll be getting a 350 long block my brother found for me. The engine was replaced at the dealer and he knew I was looking for a 1pc 350. It's a $100 for the long block. It's out of late nineties truck with vortec heads. I don't plan on using the heads though, maybe sell or use on something else.

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af2
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1933 Willys Coupe

PostPosted: Wed Feb 01, 2012 2:53 pm    Post subject: Reply with quote

Smoke that is a smokin deal!!

Shit the pistons alone are $400.00.

See if they exchange up to Scat or Eagle rods though. I just do not trust PC (pro comp)
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squeeezer
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1991 Chevrolet Camaro

PostPosted: Wed Feb 01, 2012 2:59 pm    Post subject: Reply with quote

those rods may be ok if you have em re sized off the get go with premium fasteners
big ring packages
do marine engines usually have a forged crank??

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af2
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1933 Willys Coupe

PostPosted: Wed Feb 01, 2012 3:54 pm    Post subject: Reply with quote

squeeezer wrote:
those rods may be ok if you have em re sized off the get go with premium fasteners
big ring packages
do marine engines usually have a forged crank??


The '79 I built for my son last year had a cast crank.

The 1 thing Smoke needs to do is open the top and second ring gap .005 to keep from pinching under full throttle long distance runs.
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Wed Feb 01, 2012 4:43 pm    Post subject: Reply with quote

squeeezer wrote:
do marine engines usually have a forged crank??

Most of the new stuff isn't. However the typical answer is yes.

Since I'm cheap, it's getting a cast crank. We'll find out how durable it is. The present motor has a cast crank.

af2...I plan to open up the top ring as you suggest for those long duration higher rpm runs. Typically the motor doesn't see more than 4500 rpm but it will cruise at 3500 rpm all day.

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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Wed Feb 01, 2012 5:00 pm    Post subject: Reply with quote

This motor has a crank sensor and cam sensor factory set up. I don't have it in my hands yet and I haven't seen how it's mounted. I think the crank trigger is mounted externally between the balancer and the timing cover. Is a special crankshaft needed?

****edit**** I did a quick search and it appears the crank is different and has the reluctor wheel on the crank itself. I wonder if it's worth the trouble to make the crank trigger work.

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squeeezer
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PostPosted: Wed Feb 01, 2012 5:43 pm    Post subject: Reply with quote

i bet it will be a "vortec truck" motor timing cover
the reluctor wheel will slip right onto a 1 piece seal crank
no worries if that is the setup

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af2
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1933 Willys Coupe

PostPosted: Wed Feb 01, 2012 5:55 pm    Post subject: Reply with quote

X2 slide it off old and slide it on new.
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Wed Feb 01, 2012 7:07 pm    Post subject: Reply with quote

Cool. That way I can mess with Megasquirt and get rid of the distributor and run LS1 coils.
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af2
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1933 Willys Coupe

PostPosted: Wed Feb 01, 2012 9:25 pm    Post subject: Reply with quote

SMOKEmUP wrote:
Cool. That way I can mess with Megasquirt and get rid of the distributor and run LS1 coils.



The last one I looked at had 4 lobes for a better word.
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