LS Flywheel Torque - The 1947 - Present Chevrolet & GMC Truck Message Board Network

robertsjm711 · 01-03-2018, 06:45 PM

I am installing a 5.3 with a Muncie M20 four speed and received my ARP bolts for my flywheel to crank today. In the ARP instructions it wants 85 ft lbs of torque, and all other GM info I am reading wants 74 ft lbs - Which one should I go with, ARP or GM?

**mongocanfly** · 01-03-2018, 09:34 PM

using arp bolts. ..arp bolts are in a class by theirself....I'd go with their recommendations....
.my advance adapters spec sheet called for 1st pass@15...2nd pass@ 37 ..and final pass@74

BR3W CITY · 01-04-2018, 11:46 AM

When using ARP Bolts, always use their torque specs, and always use the lubricant they include. As an example, torquing ARP head bolts to GM spec will not properly put stretch on the bolts, and change their strenght/yield points.

robertsjm711 · 01-04-2018, 12:00 PM

That is what I was thinking. I will use ARP specs, thanks for the input.

01-03-2018, 06:45 PM	#1
robertsjm711 Registered User Join Date: Jul 2017 Location: Lebanon, Oregon Posts: 241	LS Flywheel Torque I am installing a 5.3 with a Muncie M20 four speed and received my ARP bolts for my flywheel to crank today. In the ARP instructions it wants 85 ft lbs of torque, and all other GM info I am reading wants 74 ft lbs - Which one should I go with, ARP or GM? __________________ It was said that if you cut off one hydra head, two more grow back. -Lernaean Hydra Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=743246

01-03-2018, 09:34 PM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,670	Re: LS Flywheel Torque using arp bolts. ..arp bolts are in a class by theirself....I'd go with their recommendations.... .my advance adapters spec sheet called for 1st pass@15...2nd pass@ 37 ..and final pass@74 __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

01-04-2018, 11:46 AM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: LS Flywheel Torque When using ARP Bolts, always use their torque specs, and always use the lubricant they include. As an example, torquing ARP head bolts to GM spec will not properly put stretch on the bolts, and change their strenght/yield points. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-04-2018, 12:00 PM	#4
robertsjm711 Registered User Join Date: Jul 2017 Location: Lebanon, Oregon Posts: 241	Re: LS Flywheel Torque That is what I was thinking. I will use ARP specs, thanks for the input. __________________ It was said that if you cut off one hydra head, two more grow back. -Lernaean Hydra Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=743246

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