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Old 10-05-2006, 03:37 PM
 
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383 stroker clearance

What do I watch for with clearance? I will be getting a stroker pan. How far can you clearance the pan rails before you hit water jackets? It is an 010 casting block. Rods are Scat I beam but are supposed to be for a stroker engine already. If I don't have a small base circle cam, will I still have to clearance the rod shoulders? It will be using a 3.75 stroke crank with 6.0" rods.

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Old 10-05-2006, 04:58 PM
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There is no water close to pan rails. You may need to clearance the bottom of the cylinder bores. All you need is about .050 between parts. The aftermkt rods, in general, clear the camshaft as the bolt heads are further down on the rods big end base circle.
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Old 10-06-2006, 09:06 AM
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I'm guessing your using the Eagle 6.0 rods? Capscrews?


They will hit the cam slightly on four and six depending on duration. Take off about 1/16 on the shoulder.
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Old 10-09-2006, 07:07 AM
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The inside corners of the connecting rods may hit two or more cam lobes, depending on which rods and what cam. You have to grind on the bolt heads and rod sides to clear the cam. Sometimes you only have half of the head left. It looks terrible, but it doesn't seem to be a problem in service.

The bottoms of the cylinder bores usually need to be notched slightly

Sometimes the pan rail will need to be clearanced a bit, and I've had the counterweights on aftermarket cranks touch various spots in the block.

I use a foot-long zip tie that's about .051" thick as a test probe. I arbitrarily decided .051" was enough clearance.

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Old 10-09-2006, 09:57 AM
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Quote:
Originally Posted by [email protected]
There is no water close to pan rails. You may need to clearance the bottom of the cylinder bores. All you need is about .050 between parts. The aftermkt rods, in general, clear the camshaft as the bolt heads are further down on the rods big end base circle.
We have had many calls inreferance to getting into the water jackets when clearancing for strockers on the 010 blocks we cleance all our blocks in a CNC machine and on an old junk block we kept adjusting the program to go out further and further on the pan rails and on we found you have to becareful or you can hit water.

Just don't go any further then you need to as on some rods you don't need to go as far the bolts have smaller heads and are shorter.
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Old 10-09-2006, 10:46 AM
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I'm guilty of cutting out stuff to save weight(get it off hthe nose) but I've never hit water. I'd say it gotta be really deep.

Do you know how far you had to go to get to water?
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