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Old 09-06-2005, 11:48 AM   #1
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torque specifications for SBC with aluminum heads/intake

hey i tried to look it up on the internet, and on this site, and didnt get much help.

i have a '72 350 4 bolt main with trick flow aluminum twisted wedge heads, and an edelbrock aluminum torker intake

what should i torque the heads to? and the intake?

also im using APR head studs

could i get a diagram of which sequence the studs should be tightened, and to which ft lbs.

also for the intake

please dont flame or write anything stupid, help would be greatly appreciated.
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Old 09-06-2005, 12:04 PM   #2
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Here is the pic:

http://thirdgen.org/techbb2/showthre...orque+sequence

Contact ARP for the correct torque.

For the intake, start in the center, and work your way out.

11 7 3 2 6 10

12 8 4 1 5 9

Those #'s represent the order to torque the bolts looking down from the top of the intake. Usually 25-30 ft-lbs.
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Old 09-06-2005, 01:16 PM   #3
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Actually, it's a little different than that.

Sequence

12.....11......4......1......5......6


10......9.......3......2......7......8
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Old 09-06-2005, 01:51 PM   #4
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lo-tec was that sequence for the heads for aluminum or cast iron ones??

i heard different versions

60ft lbs for aluminum and 65ft lbs for cast iron
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Old 09-06-2005, 02:13 PM   #5
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ok so i call ARP and they said 65ft lbs with sbc and aluminum heads.

now im using just regular bolts for the intake, which of those 2 sequences above is right?
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Old 09-06-2005, 02:48 PM   #6
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Quote:
Originally posted by roughskinjrz
now im using just regular bolts for the intake, which of those 2 sequences above is right?
The sequence AJ_92RS posted is correct. Sorry for the misinformation, tried to remember it instead of looking in a book.
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Old 09-06-2005, 04:07 PM   #7
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Re: torque specifications for SBC with aluminum heads/intake

Quote:
Originally posted by roughskinjrz

also im using APR head studs


please dont flame or write anything stupid
You mean, like misspelling "ARP"?

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Old 09-06-2005, 08:42 PM   #8
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Well, with rates on the move the way they are I can see why "APR" was on his mind.
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Old 09-06-2005, 09:28 PM   #9
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thanks, i got one head on, what a bitch.

the guidplates where the rocker studs are, what do they have to be torqued down to? i had to loosen one a little to torque a head stud, and i just tightened back up pretty good to, but im pretty sure it has to be torqued.
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Old 09-07-2005, 12:22 AM   #10
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For aluminum heads, torque them to 65ft-lbs in 3 even steps. I usually go 20-43ish-65. Haven't had a problem yet. This was also with ARP head bolts
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Old 09-07-2005, 12:22 AM
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