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CC Advertisers
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02-12-2007, 07:10 AM
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CC Member
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Join Date: Jun 2005
Location: Henderson,
NV
Cobra Make, Engine: Superformance
Posts: 64
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Not Ranked
Torque on Edelbrock Heads
Anybody know where to find the torque requirements for Edelbrock Performer RPM heads?
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02-12-2007, 07:27 AM
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CC Member
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Join Date: Apr 2006
Location: Cincinnati,
OH
Cobra Make, Engine: 1965 GT350, 1967 GT500
Posts: 82
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Not Ranked
As I am builidng a FE with a set of Edelbrock heads, I would like to know.
I planned on calling them when I got to that point.
I'm sure the tech line would be helpful.
MC
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02-12-2007, 07:36 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
I have them on my small block and used the Fords specs for that engine. I thought that was the proper way to go based upon calls I made at the time. I don't think you do anything special for Edelbrock.
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02-12-2007, 10:15 AM
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CC Member
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Join Date: Mar 2006
Location: newtown,
ct
Cobra Make, Engine: ERA #63 428FE
Posts: 28
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Not Ranked
heads
Edelbrock gave me a very good set of instructions with my aluminum heads (for a chevy in another vehicle) Check their website, I believe I downloaded them a couple years later when I had the heads off and couldn't find the original directions.
They will give you torque and tightening sequence too.
smith
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02-12-2007, 07:16 PM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Evans,
CO
Cobra Make, Engine: NAF 289 FIA, 347 stroker with Weber 48's, building a '48 Anglia gasser, driving a '55 Chevy resto-rod
Posts: 3,119
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Not Ranked
despite what the instructions say be sure and retorque once the engine has been run at temp for awhile...lesson learned the hard way. FWIW.
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02-12-2007, 07:38 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
For a REAL small block (289/302) I have seen it in print (and I subscribe to) torquing the inner (long) head studs/bolts an addition 10# to prevent the intake manifold installation from lifting the head and reducing the clamping pressure on the head gasket. The final 10# being done after the "normal" correct torque is reached on all the fasteners.
Also ARP offers a set of reduced shank diameter studs for the 289/302 that maintain the clamping load on the outer (short) fasteners and keep the stretch in the fastener that is required to maintain clamping load. Read the tech info on ARP's website. Important stuff.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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02-14-2007, 03:45 AM
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CC Member
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Join Date: Nov 2001
Location: WPB,
FL
Cobra Make, Engine: CMC, Supercharged Ford 5.0 & all the toys.
Posts: 511
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Not Ranked
Quote:
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Originally Posted by MCOULTER
Anybody know where to find the torque requirements for Edelbrock Performer RPM heads?
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What I learned when I built my engine a few years ago, is that the torque spec is not so much set by the head manufacturer, but by the manufacturer of the studs. ARP gave me torque numbers (dry and oiled) for my TFS heads at that time.
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CMC Cobra, Ford 5.0, EFI, Vortech supercharged, T5Z, 8.8 rear, MII front, 4-wheel discs, A/C, stereo.
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02-14-2007, 04:55 AM
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CC Member
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
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Not Ranked
Interesting no one provided numbers for torquing the heads. I torqued my 427 Edelbrock Aluminium heads at 100 ft lbs and as Rick Parker said I then torqued the inside long bolts and additional 10# (my head bolts are ARP). Do not forget to retorque the head bolts after a good break in of 30 mins or so. Even if you have the gaskets that claim you don't have to re-torque.
Clois
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02-22-2007, 11:14 PM
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CC Member
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Join Date: May 2004
Location: Mobile,
Al
Cobra Make, Engine: StreetBeast 66 replica 302 350HP
Posts: 335
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Not Ranked
for the 298/302 70ft/lbs and the long bolts 80ft/lbs retorque after 2hours run
for the 351W 100ft/lbs and the long bolts 110ft/lbs retorque after 2hours run
make sure the engine is cold when retorquing, use a moly base oil on the bolt threads when installing heads, this info came from the Edelbrock web site, to find the complete tech sheet go to their site, click on automotive, then click on cylinder heads, look up your heads, get the product number, then on the left hand side of the page go to tech center and click on the series number for your heads (6000 / 60000) then go down the list to find the product number for you heads, click on the number
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PapaJohn
Last edited by jarendall; 02-23-2007 at 12:16 AM..
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02-23-2007, 12:42 AM
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CC Member
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Join Date: Aug 2000
Location: Uppsala, Sweden,
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Cobra Make, Engine: ERA #696, Ford 427/482 CO
Posts: 76
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Not Ranked
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HOB
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