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265 head bolts
#1325282 Sat Sep 07 2019 10:59 PM
Joined: Apr 2010
Posts: 48
R
Redline Offline OP
Wrench Fetcher
So I couldn't bolt the heads onto my freshly machined 265 today. The head bolts only have 2 lengths instead of the typical 3 different lengths like later heads. I have searched in vain this afternoon including manufacturers websites, forums and anywhere else Google led me. Any ideas on where to get the correct stuff? Thanks

Last edited by Redline; Sat Sep 07 2019 11:00 PM.

Don't pay no mind to that whirrin' sound, she uses a little oil but outsida' that she's cherry.
Re: 265 head bolts
Redline #1325286 Sat Sep 07 2019 11:40 PM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
Are the long head bolts for the later model engines the correct length? If so you only need to buy 4 bolts to complete the set. Dorman head bolts used to be available for individual purchase. If you can't find them that way, one option would be to purchase a second set of head bolts and use enough of the ones that are the correct length to complete the job. Head bolts don't know, or care what size engine they're in, as long as the length, thread engagement, and torque is correct.

Using studs the right length with nuts and hardened steel flat washers from ARP would be another, but much more expensive option.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: 265 head bolts
Hotrod Lincoln #1325290 Sat Sep 07 2019 11:58 PM
Joined: Apr 2010
Posts: 48
R
Redline Offline OP
Wrench Fetcher
They seem to be a bit long but I didn't try to torque anything down.

Originally Posted by Hotrod Lincoln
Are the long head bolts for the later model engines the correct length? If so you only need to buy 4 bolts to complete the set. Dorman head bolts used to be available for individual purchase. If you can't find them that way, one option would be to purchase a second set of head bolts and use enough of the ones that are the correct length to complete the job. Head bolts don't know, or care what size engine they're in, as long as the length, thread engagement, and torque is correct.

Using studs the right length with nuts and hardened steel flat washers from ARP would be another, but much more expensive option.
Jerry



Don't pay no mind to that whirrin' sound, she uses a little oil but outsida' that she's cherry.
Re: 265 head bolts
Redline #1325293 Sun Sep 08 2019 12:23 AM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
Use a 7/16" diameter Grade 8 hardened steel SAE flat washer under the bolt head if the bolts thread too deep into the block. They're available on Ebay in several different thicknesses and quantities- - - -very low cost and very useful in a lot of applications. I've built a lot of small block round track race engines with them. I was using them to adjust the thread engagement on head bolts used with heads that had been angle-milled for changing the compression ratio.
Jerry



The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: 265 head bolts
Redline #1325349 Sun Sep 08 2019 08:40 PM
Joined: Jul 2007
Posts: 530
'
Shop Shark
Jeg's sells a set of 265 Chevy head bolts

made by Mahle - Mahle # GS33285

LINK

https://www.jegs.com/i/Clevite/695/...6ODc2OnrZ5kzCKJlU1WjGzO2vWBoCgz4QAvD_BwE


George
'54 3600


1954 3600
Re: 265 head bolts
Redline #1325357 Sun Sep 08 2019 09:12 PM
Joined: Feb 2004
Posts: 21,033
H
Boltergeist
Nope- - - -that's for the late model 265, not the mid-1950's engine. That set has two intermediate-length bolts that aren't used on the 50's heads.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: 265 head bolts
Hotrod Lincoln #1325408 Mon Sep 09 2019 05:26 AM
Joined: Jul 2007
Posts: 530
'
Shop Shark
In my 1958 parts manual it says ,

V-8 (exc.348) , Head Bolts

1955 to 1958 , so that would cover the 265 V-8

SHORT BOLT - 7/16 ' - 14 X 1 & 3/4 "

GM # 0.293 - GM # 3704796

Dan's GM Obsolete
Chinook , Montana
phone : 406 - 357 - 2615

Dan's probably has some in stock .


LONG BOLT - 7/16 " - 14 X 3 & 3/4 "

GM # 0.293 - GM # 3741278

Craig Motors
Napa , CA.
phone : 800 - 224 - 8111

Craig Motors probably has some in stock


I think these are going to be hard to find NOS .


George
'54 3600

Last edited by '54 3600; Mon Sep 09 2019 03:46 PM. Reason: add

1954 3600
Re: 265 head bolts
Redline #1325681 Tue Sep 10 2019 11:22 PM
Joined: Apr 2010
Posts: 48
R
Redline Offline OP
Wrench Fetcher
Thanks for the help so far, still looking.

Edit. One of the Corvette parts houses has them, Just ordered a set.

Last edited by Redline; Wed Sep 11 2019 12:09 PM.

Don't pay no mind to that whirrin' sound, she uses a little oil but outsida' that she's cherry.

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