Author Topic: How tight do you torque them bolts?  (Read 1634 times)

Offline 4Cruizn

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How tight do you torque them bolts?
« on: January 06, 2007 - 05:45:51 PM »
I was wondering if anyone has of knows the specifications for a 440??  How tight do you go for the following??

Heads
Intake
Headers
Rods

and anything else that needs a certain foot pounds of crankin' with the big wrench?? 
« Last Edit: January 13, 2007 - 12:51:26 PM by 4Cruizn »




Offline 1970hemicuda

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Re: How tight do you tighten them bolts?
« Reply #1 on: January 07, 2007 - 12:00:10 AM »
Heads @ 70 ft-lbs, intake @ 40 ft-lbs, stock exhaust (don't know about headers) 30 ft-lbs, and connecting rods @ 55 ft-lbs.

Offline Chryco Psycho

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Re: How tight do you tighten them bolts?
« Reply #2 on: January 07, 2007 - 12:22:09 AM »
Arp head bolts are usually 60-65 with alum heads
 rod bolts are 45 stock 50-55 with Arp / aftermarket rod bolts

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Offline Bullitt-

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Re: How tight do you tighten them bolts?
« Reply #3 on: January 07, 2007 - 08:18:59 AM »
from http://www.boxwrench.net/specs/bchrys_B.htm   always torque bolts in three equal increments
Bolts or Parts Lube or Sealer Torque to:
Main Caps Engine Oil 85 ft-lbs.
Connecting Rod (Plain) Engine Oil 45 ft-lbs.
Connecting Rod (Heavy Duty) Engine Oil 55 ft-lbs.
Crankshaft Rear Bearing Seal Engine Oil 30 ft-lbs.
Cylinder Heads

     Iron Heads
 Engine oil

(blind hole)

Sealer

(water jacket)
 

70 ft-lbs.
 
Rocker Shaft brackets Engine Oil 25 ft-lbs.
Oil Pump Cover  Engine Oil 10 ft-lbs.
Oil Pump Engine Oil 35 ft-lbs.
Oil Pan Engine Oil 15 ft-lbs.
Camshaft Locking Bolt Thread Locker 35 ft-lbs.
Timing Cover Engine Oil 10 ft-lbs.
Intake Manifold

(Cast Iron Heads)
 Non- Hardening Sealer 40 ft-lbs.
Valve Cover Engine Oil 6 ft-lbs.
Water Pump Non- Hardening Sealer 30 ft-lbs.
Fuel Pump Engine Oil 30 ft-lbs.
Starter mounting Bolts Engine Oil 50 ft-lbs.
Exhaust Manifold Anti-Seize Lubricant 30 ft-lbs.
Spark Plugs No Lube or Sealer 20 ft-lbs.
Flexplate/Flywheel Cap Screws
 Thread Locker 55 ft-lbs.
Flexplate to Torque Converter Thread Locker 270 in-lbs.
Centerbolt

(Harmonic Damper)
 Engine Oil 135 ft-lbs.
Bellhousing

(Transmission to Block)
 Engine Oil 50 ft-lbs.
« Last Edit: January 07, 2007 - 08:20:38 AM by bullitt99 »
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Offline 4Cruizn

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Re: How tight do you tighten them bolts?
« Reply #4 on: January 07, 2007 - 09:16:05 AM »
When it says "Thread Locker" does that mean you need to put something on the threads?  Did I read right that the flywheel is 55 ft-lbs??  How do you measure "in-lbs??" 

Offline Chryco Psycho

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Re: How tight do you tighten them bolts?
« Reply #5 on: January 07, 2007 - 12:58:38 PM »
" lbs to ft lbs you divide by 12
 the rocker Shaft bolts are the Most critical , Do not over tighten them , this can squeeze the shaft causing it to go oval , this will not exactly affect the the stock rockers but will cause the rockers to bind or seize on the rocker shaft
 use Blue locktite to thread lock the bolts
 use teflon tape on the bolts that need to seal into the water jacket

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