Scat cranks
01-20-2008, 08:00 PM
#1
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Thread Starter
Scat cranks
Does anyone have hands-on experience with the Scat crank? I have a pal who wants to do some beer-budget mods to his 454's. For $575, they look tough to beat. Company appears to be reputable and based here in the US. I understand that they're an imported forging but the machine work is done here.
Looking at the stock rod length 4.250 piece. Maybe 600-625 hp.
Downsides?
Looking at the stock rod length 4.250 piece. Maybe 600-625 hp.
Downsides?
01-20-2008, 11:18 PM
#4
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Chris,
I have used more than a few Scat cranks and could not be happier with them. I have made upwards of 1000 hp with one with no issues. I wouldn't recommend it, but it is what the customer wanted. The engine started at around 750hp and grew from there. I usually use them in my 650's and they work great. I am not at all happy with the Eagles. The journels are all over the place. They seem to be Scat's competition and to me it is no comparison. Tell your buddy not to hesitate using a Scat crank to make 625 hp.
Eddie.
I have used more than a few Scat cranks and could not be happier with them. I have made upwards of 1000 hp with one with no issues. I wouldn't recommend it, but it is what the customer wanted. The engine started at around 750hp and grew from there. I usually use them in my 650's and they work great. I am not at all happy with the Eagles. The journels are all over the place. They seem to be Scat's competition and to me it is no comparison. Tell your buddy not to hesitate using a Scat crank to make 625 hp.
Eddie.
01-21-2008, 07:48 AM
#5
Registered User
Thread Starter
Eddie,
In looking at their catalog, I see two rod lengths listed. Is one for short deck and the other tall or do they have a high pin on the long rod length? If so, the longer rod is attractive but do you have piston rock issues with such a short slug?
In looking at their catalog, I see two rod lengths listed. Is one for short deck and the other tall or do they have a high pin on the long rod length? If so, the longer rod is attractive but do you have piston rock issues with such a short slug?
01-21-2008, 10:04 AM
#6
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Chris,
If yo are going with a 4.25 stroke crank, then use the .250 long rod(6.385) and use a piston with a 1.27 comp. height. I will not go any lower than a comp height of 1.25. As long as the piston you choose doesn't have an exceptionally short skirt, you will not have a problem with excessive piston rock. If it were going in a tall deck, than I would use a 6.800 rod.
Eddie
If yo are going with a 4.25 stroke crank, then use the .250 long rod(6.385) and use a piston with a 1.27 comp. height. I will not go any lower than a comp height of 1.25. As long as the piston you choose doesn't have an exceptionally short skirt, you will not have a problem with excessive piston rock. If it were going in a tall deck, than I would use a 6.800 rod.
Eddie
01-21-2008, 07:16 PM
#7
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Join Date: Oct 2004
Location: Upper Chesapeake Bay
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If you buy a scat rotating assembly, call and check part no's.
Their catalog has been wrong in the past. I know first hand. I'm running a scat crank with 6.385 H beam rods in a 540.
No complaints.
Their catalog has been wrong in the past. I know first hand. I'm running a scat crank with 6.385 H beam rods in a 540.
No complaints.
01-23-2008, 06:39 AM
#10
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