HotRodLS1

Although the advantage of a lightweight rotating assembly has been discussed many times on this forum, there hasn't been much attention for`the (possible) weight of various parts. Next to this there were no ready to use combinations to be found. Therefor I'm starting this thread, I will keep searching and keep the list updated as much as I can.


Traditional counterweight crankshafts
GM 5.3: 53lbs (weighed, out of engine with dished pistons)
GM 5.7: 51lbs (weighed, drilled mains)
GM 6.0: 52lbs (weighed)
GM 7.0: 56lbs (4.000" stroke)
GM LSA 56lbs (weighed, with 58 tooth Reluctor)

Manley Super Lightweight
46 - 48 lbs (4.000" or 4.100" stroke)

Callies Dragonslayer
4.000" stroke, bob unknown: 46-47 lbs
4.125" stroke, bob unknown: 47-48 lbs

Callies Magnum
4.000" stroke, 1750gr bob: 47 lbs (advertised)
3.625" stroke: 47 lbs (weighed, with billet Reluctor)

Callies Magnum XL
34 - 47 lbs (2.600" to 4.300" stroke, custom, advertised)
4.000" stroke, bob unknown: 43 lbs

Center counterweight crankshafts
Callies Ultra Billet: 60lbs (ls7, with reluctor, advertised)
Sonny Bryant ?


Rods
Gen III LS1: 617 grams (6.098" for .945" dia pressed pin, weighed)
Gen III LM7 606 grams (6.098" for .945" dia pressed pin, weighed)
Gen IV: 640 grams (6.098" for .943" dia floating pin)
GM LSA 692 grams (6.125", weighed)
Eagle ESP 619 grams (6.125")
Scat I-beam: 590 grams (6.125" for .927" dia floating pin, weighed)
Scat H-beam Q lite: 565 grams (6.125" for .927" dia floating pin)
Comp-Star H-Beam: 615 grams (6.125" for .927" dia floating pin)
Comp-Star HD I beam 642 grams (6.125", 7/16 bolts, #CSC6125DS2A2AI)
LS7: 465 grams (6.064" for .9252" dia floating pin, weighed)
Lunati Pro-Mod: 667 grams (6.125", .927" dia floating pin, weighed)
Lunati Pro Billet: 640 grams (6.125, 7/16 bolt, weighed)
Carrillo Pro: 541 grams (6.125, with 3/8 WMW bolts installed, weighed)


Piston pins
Gen III (.945" = pressed fit)
OEM 5.3: 163 - 164 grams, (weighed)
Speed Pro 4.8: 146 grams, (weighed, come with H855CP piston)
Speed Pro 5.3: 149 grams, )weighed)

Gen IV (.943" = floating)
LS2 147 grams (weighed)
LS3 145 grams, (weighed)
Wiseco #S785: 121 grams (weighed, 2.25" wide)
JE #945-2250-15-51C: 105 grams (advertised, made for FSR pistons)

Other GM LS
LSA: 146 grams (.940 piston pin, weighed)
LS7: 105 grams (2.25" x .925", Wiseco #S761, weighed)

.927"
JE #927-2250-15-51C: 106 grams (advertised, for FSR pistons)
Wiseco #S634: 106 grams (2.25" .150 pins, weighed)
JE GKHW material: 113 grams (2.25" .170 DLC coated pins, weighed)
Wiseco #S718: 134 grams (2.25" .180 pins, weighed)


Pistons
Speed Pro HH855CP: 433 grams (4.8 gen III, weighed)
LM7 OEM; 406 grams (3.780 bore, weighed)

LS1 OEM: 434 grams (3.898 bore, weighed)
Mahle LS1340898F04: 394 grams (3.898 bore, advertised)
JE $264041: 382 grams (3.905 bore, +10cc inverted dome, FSR, advertised)
JE #194881: 390 grams (3.095 bore, -2.0 dome, 2.500 pin, advertised)
JE #194884: 430 grams (3.905 bore, advertised)
Diamong #11500: 405 grams (3.905 bore, flat top, forged, weighed)

LS2 OEM: 478 grams (4.000 bore, weighed)
LQ4 & LQ9 OEM: 470 grams (4.000 bore, weighed)
Wossner #K9446DO.005: 396 grams (4.005 bore, 1.305 ch, 2618 forging)
Wiseco #K0045X05: 481 grams (4.005" bore, 9.7cc dish, weighed, 486 advertised)
JE #243016: 402 grams (4.005 bore, flat top, FSR, advertised)
Wiseco #PT124A3: 564 grams (4.030", stock stroke, domed piston, weighed)
Wiseco #K398X3: 499 grams (4.030", stock stroke, flat top piston, weighed)
JE #243017: 410 grams (4.030 bore, FSR, flat top, advertised)
Ross #94765: 486 grams (4.035 bore, advertised)

LS3 OEM: 495 grams (4.065 bore, weighed)
GM LSA: 509 grams (4.065 bore, dished piston, weighed)


Piston rings
GM 4.8/5.3 piston rings: 32 grams (3.780" bore, weighed)
GM LS3 piston rings: 37 grams (4.065" bore, weighed)
Mahle #4065MS-112: 22 grams (4.065" bore, weighed)


Rod bolts
1999-2004 5.3L GM rod bolts (2) 49 grams (weighed)
1999-2004 4.8L GM rod bolts (2) 52 grams (weighed)
ARP sportsman LS1 rod bolts (2) 55.5-56 grams (weighed)


Possible lightweight combinations




If you have weights, please share.

64post

iTrader: (5)

Scat I-beam 6.125" ....610grms
Scat H-beam Q lites 6.125"….565grms

Looks like you added these to your list. The Scat I-beam is 610, no mistake, it's what I am running in my current motor along with JE 10cc dished pistons 3.905" (414 grams)and the bob weights were far lower at 1660 than the 1800 anticipated.

S10xGN

iTrader: (11)

My Ls7 rods were 465 grams...

DietCoke

iTrader: (18)

Crank weight isn't as big a deal as counterweight placement and design. A CCW crank will have a way lower moment then a lighter traditional crank, but they're pricy.

HotRodLS1

True.. i've seperated the CCW cranks from the traditional ones.


*updated*

redtan

iTrader: (5)

I think these are a little bit less than that. From what I recall, they were about 590 when I weighed them myself. I wouldn't think those I beams are only 5g less than a Callies H beam.

HotRodLS1

Thank you, I will adjust the weights soon.

brobinson216

iTrader: (11)

Venolia 4.185 = 471 grams

Dimeomboost

Wiseco 3.903 bore flat top with valve reliefs 445 grams with hellfire rings mounted to them

Eagle 6.100 h beam .927 wrist pin 64 grams + or - a couple depends on the set I've had two be within a couple grams of 64

HotRodLS1

I can find several types of Wiseco pistons mathing your discription. Therefor I can't determine the right piston, can you tell me the part number or compression height, stroke designe etc?

I would also like to know more about the Eagle wrist pins. How wide are they? Do you have a part number? And what material are they? They are extremely light..


Can't find this pistons either.. Can you give me some more information please?

KCS

iTrader: (20)

Wiseco 4.030" stock stroke domed pistons (PN: PT124A3) - 564g

Wiseco 4.030" stock stroke flat top pistons (PN: K398X3) - 499g

GM 4.065" LS3 piston rings - 37g

Mahle 4.065" piston rings (PN: 4065MS-112) - 22g

Wiseco .943" x 2.25" piston pins (PN: S785) - 121g

HotRodLS1

A little late, so please excuse me, but thank you very much.
I've already updated the list a while ago, but forgot to react.
I'm very glad with this info, because it's hard to find weight with part numbers.



*Added some more parts*

HotRodLS1

I'm kind of busy at the moment, that's why I haven't searched for and posted new weights recently. If someone has weights, please keep sharing.

HotRodLS1

It's been a while, but I've finally added some weights..

ondatrack

iTrader: (15)

Here are a few items I have weighed:

Callies Magnum 3.625 stroke with billet Reluctor 47Lbs.

GM stock LSA forged crankshaft w/58 tooth Reluctor 56Lbs

GM stock 6.125 LSA connecting rod 692 grams

GM stock LSA dish 4.065" bore piston 509 grams

GM stock .940 LSA pin 146 grams

Lunati Pro Billet 6.125 7/16 bolt connecting rods 640 grams

Callie Compstar HD I beam 6.125 connecting rods 7/16 bolts part # CSC6125DS2A2AI 642 grams

Carrillo Pro A 6.125 LS series connecting rod with 3/8 WMW bolts 541 grams

Wiseco S718 2.25" .927 " .180 pins 134 grams

Wiseco S634 2.25" .927" .150 pins 106 grams

JE GKHW material 2.25" .927" .170 DLC coated pins 113grams

Wossner K9446DO.005 4.005 bore 1.305 ch 2618 pistons 396 grams

HotRodLS1

Thanks, i've updated the list, except for the Callie Compstars. Do the I & H beams weigh the same? And for the Carrillo Pro A, just to be sure, is the 541 grams with the bolts? I've already added them to the list..

ondatrack

iTrader: (15)

I updated the information and corrected it for the Callies Rods, I had mixed up two entries on my sheet.

Callie Compstar HD I beam 6.125 connecting rods 7/16 bolts part # CSC6125DS2A2AI 642 grams

The Carrillo Pro A rods weight include the rod bolts.

Fraser588

What about a callies crank with 2.000" journals or even 1.888" honda rods ?

Put those with a set of aluminum rods and .100" thin wall 80 gram piston pins.

Truth of the matter is, unless you're racing super stock, having the .017" rings, thin wall piston pins, hogged out pistons. The whole 20 hp gained is lost in reliability. Unless you want to freshen the engine every 60 passes. The "off the shelf" parts are heavier and last alot longer when you're sub 750hp.

HotRodLS1

Thanks.. updated the list and added the weight of a Callies CCW crank..

HotRodLS1

Choices..