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Bolt tightening

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Old 05-01-2004, 09:30 PM
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Default Bolt tightening

Can't find my book that shows the torque for the mains, rods, heads, ETC.

Anyone have a link to somewhere that shows them.
I am trying to put the short block togeather tonight.

It's been a while so I don't want to guess...
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Old 05-01-2004, 09:34 PM
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These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Other lubes, moly, and aftermarket bolts will have different torque specs.

Small Block Chevy:

7/16 in. outer main cap bolt 65 ft.-lbs.
7/16 in. inner main cap bolt 70 ft.-lbs.
3/8 in. outer main cap bolt 40 ft.-lbs.
11/32 in. connecting rod bolt 38-44 ft.-lbs.
3/8 in. connecting rod bolt 40-45 ft.-lbs.
Cylinder head bolts 65 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron heads) 30 ft.-lbs.
Oil pump bolt 60-70 ft.-lbs.
Cam sprocket bolts 18-20 ft.-lbs.
Harmonic damper bolt 60 ft.-lbs.
Flywheel/flexplate bolts 65 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bellhousing bolts 25 ft.-lbs.
Exhaust manifold bolts 25 ft.-lbs.

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Old 05-01-2004, 09:37 PM
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Sorry I have 502 mags ( 1992 )
I am running Pro 1 aluminum heads
I need the torque spec's for the mains, rods, and heads.
OH and the oil pump TOO
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Old 05-01-2004, 09:39 PM
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sup tinker



**Mains inner & outer, 110 ft- lbs

**7/16" rods 67-73 ft-lbs (.009 stretch preferred)

**head bolt, 70 ft-lbs

**head stud, 65 ft-lbs

** using oil as lube




p.s .. my short block is already done

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Old 05-01-2004, 09:47 PM
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Oops...sorry. I read your post too fast and instead of seeing "short block", I read "small block"...

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Old 05-01-2004, 09:50 PM
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Thanks Travis
Just finally got some free time so I am trying to get one engine togeather this weekend.
Got the Hyd Roller cams and lifters last week and I can't wait to hear these things run.
Should gain about 50 - 75 HP with the changes I made to the engines.
That and the bottom work I had done I hope to gain 5 - 7 MPH
May need to have the 28 labbed.

What is the spec for the oil pump???
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Old 05-01-2004, 09:51 PM
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Danny --
Do you have the list of spec's on the big block??
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Old 05-01-2004, 09:57 PM
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sorry don't have the specs on the oil pump.. I probably have them out in the barn, but its rainin and I am in my jammies


Yeah I am doin the same, switched pistons and changed over to solid roller cam and thats about it.

Got it painted today
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Old 05-01-2004, 09:59 PM
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Solid roller? What were you running before?
What pistons and compression are you running?
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Old 05-01-2004, 09:59 PM
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found it tinker..


oil pump bolt, big block chevy.... 65 ft lbs.
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