347 Stroker Pistons and Block - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 3 (permalink) Old 04-13-2008, 02:20 AM Thread Starter
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347 Stroker Pistons and Block

Hi all. From my earlier posts you may have worked out that there may be a problem with an engine I've brought..... It was sold to me as a 347 Stoker but the CR was too hi. He agreed to put new pistons in to lower the CR, I talked to the parts house he is getting the pistons from. They don't have, don't supply stroker pistons! I've also seen one of the hi comp pistons from the motor, looks like a standard piston, dosen't have the pin real close to the oil ring like a stroker piston. Can a stroker use a standard piston?

Secondly, I thought the block had to be releaved for the extra stroke length as it spins?

Thoughts please......

Dave
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post #2 of 3 (permalink) Old 04-13-2008, 09:55 AM
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Re: 347 Stroker Pistons and Block

no a stock piston will not work, compression height needs to be in the 1.090-1.175 area. Some blocks need a small notch at the bottom of the cylinder to clear the rod bolt. I suspect you got a stock stroke 302 passed off as a 347

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post #3 of 3 (permalink) Old 04-13-2008, 05:06 PM
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Re: 347 Stroker Pistons and Block

What you can do is get the part number off of one of the pistons he took out and have him give you the part number of the pistons he is putting in. Then look up the application for yourself and you'll know exactly what you're getting.
Also, is he honing the block and installing new rings? While the engine is torn down that far, you might as well put in a fresh set of rod and crank bearings. Pulling the main caps is only one more small step at this point. I would want to visually inspect the crank for wear, and I would insist on seeing everything. If he's legit, he won't mind showing it all to you for visual inspection and to research any part numbers. Keep in mind that engine bearings, rings, oil pump, and even polishing the crank are all relatively cheap at this stage of the game. Good luck!

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Last edited by kgordonl; 04-13-2008 at 05:54 PM.
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