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post #11 of (permalink) Old 01-06-2015, 02:19 PM
barnett468
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Join Date: Jun 2014
Posts: 1,260
Re: 347 Stroker Pistons

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the 185 afr's will make a lot of hp and are what i would use unless you want monster hp . . get the stiffer springs and 7/16" studs if you run high spring pressures or over 6500 rpm.


here's one good middle of the road cam.

http://www.compcams.com/Company/CC/c...csid=1057&sb=0


i would mill the block so the pistons are around .003" below the deck . . this will also square the deck to the crank if they do it right

you can also have it bored and honed with torque plates . . if you plan on using more torque than stock on the head bolts, this might be a good idea and have the plates torqued to the spec you will use.


the quality of the rings is important, i would use plasma moly with a barrel shape.

je std pro seal, barrel face top ring plasma moly inlay?, tapered second, file fit

http://www.summitracing.com/parts/je...0305/overview/


je premium pro seal barrel face top ring plasma moly coated, reverse twist tapered second ring, file fit, $114.00

https://sdparts.com/details/je-pistons/jej100s8-4030-5


the most common piston materials are 2618 and 4032 . . the 4032 is high silicon content which is low expansion material so you can run tight piston clearances which is my preference, especially in something that has a short skirt.


je srp, 1.1 compression height, 5cc volume, 423 grams, .927 pin od, .030” p/n - 140689-8 . . this uses the close ring spacing psig mentioned to keep the pin from being in the lower ring land . . this will be around .006” below the deck on your block if it is unmilled . . you need to verify your pin diameter on your rods . . pin intersects oil ring . . .

http://www.summitracing.com/parts/sr...view/make/ford


mahle power pak pistons forged 4032 aluminum, 395? grams, pin 118 grams, .927 pin . . file fit rings model unknown, they make 3 types . . $792.00

http://www.summitracing.com/parts/ml...view/make/ford


same mahle kit as above only $557.00

http://www.ebay.com/itm/Mahle-SBF090...#ht_2890wt_938


pre fit rings

http://www.summitracing.com/parts/pc...-030/overview/


probe 1.090 ch, 2618 aluminum, .912 pin

http://www.summitracing.com/parts/pb...view/make/ford

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Last edited by barnett468; 01-07-2015 at 12:08 AM.
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