6 pac piston rod and pin
Piston 920
Rod 901
pin 251
440 stock pin 223
Stock 68 440 piston rod pin together 1932.5
6pac together 2071.2
68 piston 866 pin 223
Those 866 pistons came out of a 74 440 motor home block had 6 pac rods and steel crank and internally balanced, regular balancer.

I checked out the ross pistons #80762 ...like good, ..... i think with a 88cc head with a #40 felpro head gasket comp around 11.00 to 11.25 ...............i have not checked out the price yet. ?

Thank you i really needed that info cudaman 69 .......... is it the same with a HP block ???

Reg piston was not in a HP block but the combined one was. Slight difference in height between the 2, 68 being taller but neither as tall as the 6 pac. Remember the 69-1/2 6 pac had the regular pistons and LY rods, 70-71 had the high compression 4 valve notch pistons and big rods, externally balanced. I’m thinking the LY rod and lighter pin would get close to the regulars setup with internal balance, with a little metal removal in the piston (30 grams). That’s what I’m looking to do

You need the small and big end weights for the rod to calculate the bob weight.

2 big ends+ 2 con. bearing sets+ 1 little end+ 1 ring set+ 1 piston +1 pin + any locks for one piston+ (oil of choice usually 5/6 gr.)= bobweight.

Thank you sir, it has been a struggle matching parts ! all the stroker kits from Jegs ...........need balancing too ! *&^%$#@! it is hard when you have not bought the pistons yet,.........LOL LOL

Why can't some body made a affordable forged piston with a compression radio around 11.00 to 11.50 with a open chamber head in a stock block ? ..................... please i don't understand !

Because aftermarket choices are bleak to non existent for mopars... now it it were a chevy or smallblock ford ...

I got a set of trw forged designed for open chamber
.60 over they are close to 11 to 1 I never measured weight but I heard they are stock cast piston weight

Did you get your pistons from Jegs/summit/ or from there web-site ?

They are old stock 2295. I think they used to call them 6 pack pistons

There isa set on eBay for 60 bucks

Because that is a bad combination. Most customers want a combination that they can daily drive with pump gas. A modern closed chamber aluminum head with 10:1 compression using an off the shelf flat top piston makes great power and works with pump gas.

The TRW 6 Pack pistons have 4 notches and are identical to the stock ones in shape.

Yep, the 2295 are what gets termed "old trw dome tops".

The six pac is 2355

Thanks all the pistons for-sale i have seen are the low compression one's

What heads are you using ?

Then they’re not 6 pac pistons, should be 2.05 compression height at least.

Im using #452 heads for unleaded gas