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12-07-2006, 03:59 PM
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CC Member
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Join Date: Jun 2006
Location: wellington,
oh
Cobra Make, Engine: BDR #260 w/ 347 stroker, Canfield 195 cc heads, prosystems carb on a VicJr, Comp roller cam
Posts: 225
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Not Ranked
Aluminum intake torque spec's
Looking for the torque spec's for one using ARP bolts with an aluminum intake manifold (air Gap) with SVO aluminum ford heads.
I also assume the tighting sequence to be the same a cast iron?
__________________
BDR#260...21.6K miles logged as of 4/2018 
www.motorheadsohio.com We are an engine machine shop, specializing in crankshafts!
47 years of doing business an going strong! stop on by for a personal tour of the shop
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12-07-2006, 04:14 PM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Not Ranked
I started at 16ftlbs and then re-tightened to 20ftlbs after warm-up and cool down. Sequence is starting in the center and working across and outward to the corners.
-Dean
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12-07-2006, 11:20 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
What do the specs say for your manifold RE: torque and pattern? Bolts do not matter whether they are ARP or Radio Shack Specials.
What matters is the torque and the pattern. Some manifolds require a different tightening sequence depending on MFG.
Once tightened warm the engine to operating temp checking for leaks, shut down.. then while engine is warm retighten to specs. Some say 3-5lbs more torque, others say to specs ... your choice.
I haven't warped an alum head or a manifold following this procedure and hve done it to MFG specs. But I'm not a mechanic either.
__________________
"Breathe in... Breathe out... then move on with life. Lifes too short to sweat the small stuff"
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12-08-2006, 12:02 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Oh, THAT kind of torque. For a minute there I thought you meant to imply that small blocks actually have torque.  |
12-08-2006, 12:07 AM
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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
Ernie,
You do remember the appropriate response to that.... if not
BITE ME and all SB owners
__________________
"Breathe in... Breathe out... then move on with life. Lifes too short to sweat the small stuff"
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12-08-2006, 05:10 AM
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CC Member
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Join Date: Jun 2006
Location: wellington,
oh
Cobra Make, Engine: BDR #260 w/ 347 stroker, Canfield 195 cc heads, prosystems carb on a VicJr, Comp roller cam
Posts: 225
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Not Ranked
Never thought of looking at the manifold guys for the spec's. I'll check this out. Thanks
BTW...what is this BB vs SB stuff??? I thought this stuff only happened in boating...sailor boater vs power boater, guess I was wrong ; - )
__________________
BDR#260...21.6K miles logged as of 4/2018
www.motorheadsohio.com We are an engine machine shop, specializing in crankshafts!
47 years of doing business an going strong! stop on by for a personal tour of the shop
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12-08-2006, 10:27 AM
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Senior Club Cobra Member
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Join Date: Sep 2002
Location: Montgomery,
TX
Cobra Make, Engine: CR 427 S/C, 351W, 5 Sp & KMP142 - 427 SO, 4 Spd
Posts: 2,212
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Not Ranked
tamanaco,
Stick around, you ain't seen nothing yet! For grins do a search on SB - BB
and you'll see what I mean. Heh heh - it is an on going saga. 
__________________
Flip
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12-08-2006, 07:49 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
Ernie: Go back to sleep............Or better yet go drive around the island in circles
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
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