Head bolt question

Reply Subscribe

Thread Tools

Search this Thread

Dec 4, 2008 | 03:40 PM

#21

JohnZ

Team Owner

Joined: Oct 2000

Posts: 38,897

Likes: 1,926

From: Washington Michigan

Quote:

Originally Posted by DZAUTO

APPROXIMATELY 1959 model 283s, and all subsequent SB heads thereafter used three lengths of head bolts, with the two end bolts being the middle length.

That's what I meant - should have been more specific about years.

Dec 4, 2008 | 09:17 PM

#22

buns

Safety Car

Joined: Feb 2006

Posts: 4,142

Likes: 704

Well I searched until my eyes started to bleed. Can't find any manufacturers or vendors that are aware of this. Here are a few samples.

H. Paulin

Corvette Central

Even "Headbolts.Com" http://headbolts.com/chevysb.html

I give up.

Dec 4, 2008 | 09:38 PM

#23

midyearvette

Le Mans Master

Joined: Nov 2008

Posts: 5,691

Likes: 12

From: columbus oh

head bolts

all 265 and early 283 engines had two length's . there was a head change and it could have happened when they went away with staggered valve cover bolts , anyway the two intermediate head bolts were used later and at the end of each head....sounds like you have an early 283 ..

Quote:

Originally Posted by bigblock67

Why do most small block head bolt kits come with 3 length bolts when the 2 middle length bolts provided will not work on my 283s. All bolts under cover are same length. Need explanation.
Don

Last edited by midyearvette; Dec 4, 2008 at 09:41 PM.

Dec 5, 2008 | 08:46 PM

#24

john neas

Pro

Joined: Jul 2005

Posts: 549

Likes: 3

[QUOTE=buns;1568082223]Well I searched until my eyes started to bleed. Can't find any manufacturers or vendors that are aware of this.

Why would you not accept the Chevrolet catalog from 1957 pictured in post 18?

Your 3" bolt would not even fasten to the block as shown in post 18.

Regards

Dec 5, 2008 | 09:08 PM

#25

bigblock67

Thread Starter

Instructor

Joined: Aug 2006

Posts: 248

Likes: 0

From: Thorntown IN

head bolts

John, Good try looking. Amazing isnt it. Corvette central knows about this. Went thru same problem until they listened to what the facts were. They stated that a new part# will be created . Your pic was a little blurry. I couldnt make it out. Thanks for your effort.
Don

Last edited by bigblock67; Dec 5, 2008 at 09:59 PM.

Dec 5, 2008 | 10:04 PM

#26

buns

Safety Car

Joined: Feb 2006

Posts: 4,142

Likes: 704

Quote:

Originally Posted by john neas

Why would you not accept the Chevrolet catalog from 1957 pictured in post 18?

I DO accept the Chevrolet catalog. The point that I was trying to make was that the manufacturers and vendors and a whole lot of old small block chevy owners are not aware of this.

Did I make myself clear this time?

Dec 5, 2008 | 10:17 PM

#27

john neas

Pro

Joined: Jul 2005

Posts: 549

Likes: 3

Head bolts

Quote:

Originally Posted by bigblock67

The last line in the catalog, post 18 reads:
57 ALL,CORV. (8 cyl) long (7/16-14x3 3/4)(raised circle on top of head)
3741278 18 .15

The key is 18 long bolts vs 14 for later heads. There were no intermediate (3") bolt listed since they were not used at that time.

By the way, what are your favorite Doors songs. Have you listened to their uncut version of Gloria on you tube?
Good luck