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Author Topic:   351C Head Bolt Torque
MrXerox
Gearhead

Posts: 290
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 06-27-2001 06:55 PM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Hey Alex, what is the proper Ft. lbs. to max out at when installing closed chambered iron heads on a 351C using Victor Reintz head gaskets?

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 06-27-2001 07:08 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
95 lbs on the short, 105 lbs on the long bolts. This is providing you have used FoMoCo bolts. Add 5 lbs for new high quality bolts.

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
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kid vishus
Gearhead

Posts: 3894
From: middle of NC
Registered: Oct 2000

posted 06-27-2001 08:15 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
I torque mine to 115 ft lbs using ARP bolts with their moly lube on them.

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Butch Jennings
Gearhead

Posts: 534
From: California
Registered: Apr 2000

posted 06-27-2001 09:26 PM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote

I don't mean to show any disrespect Kid, but 115 ft lbs with ARP lube is way too much! ARP says to use 80% torque with their lube and 100% with motor oil. 115 ft lbs with ARP lube is like 140 ft lbs with oil.

I torque my 460 to 120 ft lbs with ARP lube on a 9/16" ARP stud. I used to torque my FE studs (1/2") to 90 ft lbs with ARP lube and I never torqued them more than 110 ft lbs with motor oil....keep in mind, bolts are less forgiving in regards to stress on the threads, deck and bores than studs are.

115 ft lbs with ARP moly can't be helping your block problems as of late....have you ever measured a cylinder bore when a torque plate is on and torqued then rechecked it after the plate has been taken off? I've seen cylinders that were within .0001 of round and straight with the plate on change as much as .003 1.5" down the bore after the torque plate has been taken off on our thinwall Fords, .0015 to .002 is about normal from my experience. Now take that same block and put the plate back on and add 10 ft lbs of torque....it'll move another .001 to .002 or even more depending on how thin the block is.....food for thought.

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Butch
460 powered 1967 Comet Cyclone
10.271 @ 130.069
Butcher's Home Page
"Friends don't let friends drive Chevys"

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 06-27-2001 09:35 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
I stand by my specs! With oil or anti seize.

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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Butch Jennings
Gearhead

Posts: 534
From: California
Registered: Apr 2000

posted 06-27-2001 10:55 PM     Click Here to See the Profile for Butch Jennings   Click Here to Email Butch Jennings     Edit/Delete Message   Reply w/Quote

I wasn't disputing your specs Alex.

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Butch
460 powered 1967 Comet Cyclone
10.271 @ 130.069
Butcher's Home Page
"Friends don't let friends drive Chevys"

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kid vishus
Gearhead

Posts: 3894
From: middle of NC
Registered: Oct 2000

posted 06-27-2001 11:54 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
Ummmm.......

oops....

I have had those head bolts for so long I forgot about their recommended torque specs. I have never checked one with a torque plate, kind of a low budget operation. And the shop I go to is pretty small and they dont have one either.

I think alot of my current problems have alot to do with undersized pistons in oversized holes. My main problem is I run alot of junk for parts. If anyone actually saw that set of pistons I am running, they would be amazed the thing stays together at all.

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 06-28-2001 01:47 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
I know Butch. You were agreeing with me. I didn't mean to come across as as disputive. SOrry if I did. I just like to be as short and to the point as I can most times.

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

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MrXerox
Gearhead

Posts: 290
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 06-29-2001 01:07 AM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Alex, my bolts are stock FoMoCo bolts and are all 4 1/4 inches in length not including the bolt head. Would that classify these as long or short?

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SteveLaRiviere
Administrator

Posts: 31026
From: Saco, Maine
Registered: May 99

posted 06-29-2001 04:16 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
He was thinking small block. All 351C head bolts are the same length.

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'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC {Wife's car...}
All Fords since 1977

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MrXerox
Gearhead

Posts: 290
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 07-01-2001 11:30 AM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
So, 95 lbs or 105 lbs on mine?

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SteveLaRiviere
Administrator

Posts: 31026
From: Saco, Maine
Registered: May 99

posted 07-01-2001 05:51 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
105 lbs/ft.

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'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC {Wife's car...}
All Fords since 1977

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Moneymaker
Administrator

Posts: 18704
From: Lyons, IL, USA
Registered: May 99

posted 07-02-2001 10:24 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Ditto. I forgot for a second that you "C" guys have all the same length head bolts.(lol)

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

[This message has been edited by Moneymaker (edited 07-02-2001).]

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