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...

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.

D. Ocean
Pompano Beach, FLA

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

sup tinker :D



**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 :p

Oops...sorry. I read your post too fast and instead of seeing "short block", I read "small block"...

D. Ocean
Pompano Beach, FLA

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???

Danny --
Do you have the list of spec's on the big block??

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 :D


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

Got it painted today :D

Solid roller? What were you running before?
What pistons and compression are you running?

found it tinker..


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

What cube is that engine?

I have been running hydraulic roller cams in the last few motors. I switched out to another set of JE's for a Compression ratio of 12.7:1 :eek: taking full advantage of the 110 octane ;) And running a solid roller, 250/258, .595/.595 lift. computer program gives a idea of about 60-70 hp more then last year. an estimate is around 570 hp.

same ole 383 ;)

Did you end up stroking your motors ?

Big Chevy

Main cap bolt, 396-427 2-bolt 95 ft.-lbs.
Main cap bolt, 396-454 4-bolt (inner/outer) 110 ft.-lbs.
3/8 in. connecting rod bolt 50 ft.-lbs.
7/16 in. connecting rod bolt 67-73 ft.-lbs.
Cylinder head bolts, long 75 ft.-lbs.
Cylinder head bolts, short 65-68 ft.-lbs.
Screw-in rocker arm studs 50 ft.-lbs.
Intake manifold bolts (cast iron head) 25 ft.-lbs.
Oil pump bolt 65 ft.-lbs.
Cam sprocket bolts 20 ft.-lbs.
Harmonic damper bolt 85 ft.-lbs.
Flywheel/flexplate bolts 60 ft.-lbs.
Pressure plate bolts 35 ft.-lbs.
Bellhousing bolts 25 ft.-lbs.
Exhaust manifold bolts 20 ft.-lbs.

D. Ocean

NO - I couldn't find the $ this year so I am going with
the new Pro 1 heads tricked out by Jim V.
That and the Hyd Roller cams instead of the sollid flat tappet that I ran last year.
I also 0 decked the blocks and bought a 10 QT Dooley oil pan ( I still need one more - ANYONE GOT ONE)
With the new heads and cams and a slight increase in compression I hope to gain 50 to 75 HP per engine.
I hope to be in the 650 to 670 HP range.

I sure am glad that I can run mid grade in my tub.
I remember the good old days when I had to run 110 in the GLASTRON.
The FAST guys used to follow me all the time and I couldn't figure out why untill I asked one of them.
( THEY LIKED THE SMELL )

Thanks Danny / Travis
I new I could count on you guys to come through.

It does smell good.. Even my mom likes it :D

I decked mine to zero so I could use some good gaskets instead of those .015" steel shim gaskets I was using. End of last year those gaskets were blown out in a few places :eek: The cometics should keep everything sealed in ;)


Sounds like you have a great setup for this year, expessically with a set of heads tricked out by jimv. good luck tinker, hoepfully I'll be over this summer and check out your ride some time :)

Here's an affordable SC 502 for sale on E-Bay:

http://cgi.ebay.com/ebaymotors/ws/eB...category=46098

D. Ocean
Pompano Beach, FLA

LOL!! I am sure as hell its cheap on gas :D

I'm superceeding your post here too sucker.....:D

Don't use words I don't understand fool :D

roflmao.........:D