torque specs? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71BBK10 · 06-13-2002, 04:53 PM

does anybody out there know what to torque bb heads down to? i went to mortec.com and i checked my haynes manual but i couldn't find anything. i'm guessing its around 80 but would like to know for sure. thanks for any replies

tom hand · 06-13-2002, 05:20 PM

Here ya go.

http://home.isoa.net/~mharrisj/bbctrq.html

71BBK10 · 06-13-2002, 05:25 PM

damn, there goes my excuse for not working on it when dad gets home..... hehe thanks alot tom.

tom hand · 06-13-2002, 05:36 PM

Actually I found some better ones, has different specs for different size bolts, musta changed over the years.

http://www.hotrodsforsale.com/a_t_torque_big_block.htm

71BBK10 · 06-13-2002, 05:42 PM

hmmm, that looks like some good info, i wonder how much of a difference in between each bolts torque you can have before it becomes an issue, i used that arp moly lube on mine only cause i vaguely remember my h.s. shop teacher saying something about never torque bolts down dry... thanks again.

71BBK10 · 06-13-2002, 05:43 PM

ohhh almost forgot, i think the long and short taht he's talking about is the 4 bolts that go under the exh. ports are probably half as long as the ones the go under the valve covers and above the exhuast ports

06-13-2002, 04:53 PM	#1
71BBK10 Teufelhunden Join Date: Oct 2001 Location: Camp Pendelton Ca Posts: 572	torque specs? does anybody out there know what to torque bb heads down to? i went to mortec.com and i checked my haynes manual but i couldn't find anything. i'm guessing its around 80 but would like to know for sure. thanks for any replies __________________ 1971 K10 lwb fleetside 402 T350 205

06-13-2002, 05:20 PM	#2
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	Here ya go. http://home.isoa.net/~mharrisj/bbctrq.html __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

06-13-2002, 05:25 PM	#3
71BBK10 Teufelhunden Join Date: Oct 2001 Location: Camp Pendelton Ca Posts: 572	damn, there goes my excuse for not working on it when dad gets home..... hehe thanks alot tom. __________________ 1971 K10 lwb fleetside 402 T350 205

06-13-2002, 05:36 PM	#4
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	Actually I found some better ones, has different specs for different size bolts, musta changed over the years. http://www.hotrodsforsale.com/a_t_torque_big_block.htm __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

06-13-2002, 05:42 PM	#5
71BBK10 Teufelhunden Join Date: Oct 2001 Location: Camp Pendelton Ca Posts: 572	hmmm, that looks like some good info, i wonder how much of a difference in between each bolts torque you can have before it becomes an issue, i used that arp moly lube on mine only cause i vaguely remember my h.s. shop teacher saying something about never torque bolts down dry... thanks again. __________________ 1971 K10 lwb fleetside 402 T350 205

06-13-2002, 05:43 PM	#6
71BBK10 Teufelhunden Join Date: Oct 2001 Location: Camp Pendelton Ca Posts: 572	ohhh almost forgot, i think the long and short taht he's talking about is the 4 bolts that go under the exh. ports are probably half as long as the ones the go under the valve covers and above the exhuast ports __________________ 1971 K10 lwb fleetside 402 T350 205



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