Country Boy

iTrader: (24)

What torque specs are yall using for FI? I have 12 pt. ARP head studs and 6.0 MLS gaskets.

chriswtx

iTrader: (5)

me too...

smokinHawk

iTrader: (48)

are you using the lube or motor oil.
best to use the stock torque spec, though i tightened up mine a bit more, think it was about 80ft-lbs

Inspector12

iTrader: (29)

Well ARP says 65 on all the 15mm and 27 on all the 10mm, but I usually go 80 on the 15 and 30 on the 10 mm though just what I do I have never had a real problem with it due to either the TQ spec or gaskets. Some others will chime in on there procedure though. I go up in 10 lb increments after 50 or so. I let them sit over night and re check them etc...

Country Boy

iTrader: (24)

I went ahead and went to 75 with moly lube. I didnt know the 10mm was that much. Mine are at ~13lbs.

crazykid

iTrader: (79)

On all the cars I do 35-55-75 and 25 on the 10mm

Country Boy

iTrader: (24)

hummm... guess I better tighten the 10mms... lol I had them at 13lbs when I was H/C with no problems. Better safe than sorry

bowtieman81

iTrader: (35)

I would not go much beyond what ARP recommends for tightening specs. They are a high quality fastener and I think ARP would give torque specs that are approaching yield. If you have a good torque wrench I might bump it up 5-10 ft lbs. Otherwise let her be.

I do think for FI it would be wise to re-torque the head bolts are a heat cycle as ARP recommends. This should help counter the setting that will take place.

Country Boy

iTrader: (24)

On the TQ paper they said that the TQ spec is usually 75% of the fasteners yeild.

Slowhawk

iTrader: (12)

We ussually torque them to 80ft/lbs and 25lbs for the smaller ones with the ARP moly lube..

MiaSSmaro98

iTrader: (9)

guys were can u get like a book or a sheat the states all the tq ratings for every part in the engine?

bowtieman81

iTrader: (35)

This is a fairly standard target for a good fastener. It helps to prevent overtorquing due to the many variables in bolted joints. Like I said, if you have a good or calibrated torque wrench, you could probably bump up the torque 10 ft-lbs. Yield point on the 15mm bolts would be about 86 ft-lbs.

Country Boy

iTrader: (24)

I may just leave mine at 75ft/lbs. I dont know if I have to take the rockers back off to get to the bolts again.

67Firebird455

iTrader: (27)

Yeah, I know if you have a deep socket, it'll hit the rocker brace, I snapped one of mine pulling the heads off, not paying attention while it was still in the car.