5.3FoxUK

Anybody out there know the weight of a Wiseco ProTru 3.903 +4cc dome piston?

Also looking big and little end weights of a Scat I beam , 6.100" long with .944" pressed pin.

I'm trying to work out if I can get away with using a lq4 crank without having to add heavy metal

Thanks

brady346

iTrader: (13)

461 grams on the piston alone
I've got pin,clip, ring, bearing and gen 4 floating rod weights too if you need them

5.3FoxUK

Thanks, Thats great, a lot lighter than the 4.030 version and just slightly lighter than a stock lq4 piston. Think I'll be going for these.

64post

iTrader: (5)

610 grams on the I-beams Scat rods, 167 on the small end, 443 on the large side, this is what the last set of Scat I-beams I use stated info on the box.

64post

iTrader: (5)

LQ4-9 crank looks like the others but is balanced for heavier bob weights, 4.00" pistons are heavier so you'd likely have to drill your LQ4 crank, not add metal. I made the mistake of using a 5.3 crank for a 370 build and had to add mallory metal to get it to balance, the pistons/rods/bob weights were heavier than 5.3 stuff.

brady346

iTrader: (13)

same mistake I made except on 3.903 bore. Went from a $200 to a $600 balance. Also, OP, these piston pins are NOT drop in. My factory gen 4 rods are .943 and the pins supplied with the pro tru kit are .9455. Plan on another $75 to have the bronze bushing honed on your factory rods. Not sure how wiseco figures this to be acceptable when emphasizing the budget aspect of these slugs. They are an inexpensive set of pistons though...

KCS

iTrader: (20)

That's strange, mine were .943" for the 4.030" bore pistons.

5.3FoxUK

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Any chance you could send me over the rest of those weights please brady346.