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01-05-2007, 07:05 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine: BDR, 351W, 400 Horses
Posts: 520
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Not Ranked
stage 8 Header Bolts
Has anyone tried Stage 8 header bolts on a Backdraft roadster with a Ford Racing 351 W crate motor (stock 385 hp) or on any cobra for that matter.
After approx the 1st 1800 miles, I lost a couple of bolts causing the need for the gasket to be replaced.
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01-05-2007, 07:28 AM
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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
They work well. Another option is ARP's bolts with the heads drilled for safety wire.
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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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01-05-2007, 07:31 AM
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CC Member
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Join Date: May 2002
Cobra Make, Engine:
Posts: 48
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After leaving a trail of ARP header bolts from Denver to Aspen on my first long trip, I replaced them with Stage 8 header bolts. I have an FE so there isn't a lot of room under the hood. They should be pretty easy to install, especially with a 351w. At least you can SEE your header bolts! 
I haven't had any more problems and they're still tight, more than 23,000 miles later.
Al |
01-05-2007, 07:40 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine: BDR, 351W, 400 Horses
Posts: 520
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Wow thats awsome. It sounds like your a "Driver" as well. I took my car to cape code from CT the 2nd week I had the car. I just love driving the thing and my kids love coming with me. A much better option than the "Harley"
Thanks for the feed back on the Stage 8's
Have Fun
SD5805
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01-05-2007, 08:20 AM
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Senior Club Cobra Member
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Join Date: Aug 1999
Location: Carlsbad,
CA
Cobra Make, Engine: Previous owner of SPF#1938, with a Keith Craft 496ci Genesis 427 side oiler, 667 FWHP, 633 FWTQ, 560 RWHP, 550 RWTQ.
Posts: 1,303
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__________________
Jim Woodard
Don't interfere with somethin' that ain't botherin' you none.
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01-05-2007, 08:54 AM
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CC Member
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Join Date: Nov 2006
Location: Fontana,
CA
Cobra Make, Engine: Lonestar LS427, 408w, 48IDA Webers, TKO 600, 9" Currie 4-link 4.11 rear
Posts: 390
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Not Ranked
Spectre sales a really attractive header bolt set, gold zinc plated with safety wire and drilled bolts. Hex head and w/internal Allen head. I have them on my 351w. Grade 8, with SS wire and everything, looks great.
http://http://www.spectreperformance.com/#CATALOG.4667 |
01-05-2007, 11:03 AM
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CC Member
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Join Date: Mar 2005
Location: Savannah,
ga
Cobra Make, Engine: Unique, 351W
Posts: 260
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I had the same experience. I lost 2 bolts and ruined a gasket after about 1000 miles on my 351W crate motor. If I may ask a stupid question, what is the difference between a Stage 8 bolt and a "regular" bolt?
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01-05-2007, 11:51 AM
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CC Member
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Join Date: Oct 2003
Location: Cantonment,
Fl
Cobra Make, Engine: sold BDR #123 351w, Tko 17" full polished wheels
Posts: 197
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I have used Stage 8 header bolts on my (former) 351 Backdraft. If I remember correctly I had to do a little grinding on a few of the hex washers to allow them to clear the header pipe. Other than that they worked great and I never had any problems with them backing out. I would use them again if I build another Cobra.
David
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01-05-2007, 11:53 AM
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CC Member
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Join Date: Jan 1999
Location: Whitehouse Station,
NJ
Cobra Make, Engine: SOLD: 2013 Boss 302 Mustang #2775 (both options). SOLD: 95 Mustang Cobra R #4 of 250 "Rosie's Diner" car. SOLD: CCX2-2505, #5 of 7 289 FIAs ever produced at Contemporary! my first Cobra: Unique 427SC w/ 428CJ moder!
Posts: 5,438
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Quote:
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Originally Posted by davidlee
I have used Stage 8 header bolts on my (former) 351 Backdraft. If I remember correctly I had to do a little grinding on a few of the hex washers to allow them to clear the header pipe. Other than that they worked great and I never had any problems with them backing out. I would use them again if I build another Cobra.
David
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I had to grind some of the hex washers too, I also used some Loc-Tite on the bolts.
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01-05-2007, 12:00 PM
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Senior Club Cobra Member
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Join Date: Aug 1999
Location: Carlsbad,
CA
Cobra Make, Engine: Previous owner of SPF#1938, with a Keith Craft 496ci Genesis 427 side oiler, 667 FWHP, 633 FWTQ, 560 RWHP, 550 RWTQ.
Posts: 1,303
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Not Ranked
W-lewis,
Stage 8 header bolts are a brand name for a special design bolt that won't come loose once installed. Here's a link to their WEB site with a description and picture of the bolts.
http://www.stage8.com/offer.htm
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Jim Woodard
Don't interfere with somethin' that ain't botherin' you none.
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01-05-2007, 12:08 PM
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CC Member
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Join Date: Mar 2005
Location: Savannah,
ga
Cobra Make, Engine: Unique, 351W
Posts: 260
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Not Ranked
Many thanks Jim. My engine compartment is so tight and the header bolts are so inaccessible, it might be difficult to fasten the retainer clip. I'll definitely let my mechanic look at them.
Walter
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01-05-2007, 01:21 PM
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Senior Club Cobra Member
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Join Date: Aug 1999
Location: Carlsbad,
CA
Cobra Make, Engine: Previous owner of SPF#1938, with a Keith Craft 496ci Genesis 427 side oiler, 667 FWHP, 633 FWTQ, 560 RWHP, 550 RWTQ.
Posts: 1,303
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Not Ranked
w-lewis,
I looked at the photos of your engine in your gallery and it doesn't look to me that installing the Stage 8 header bolts would be any problem what so ever.
Nice looking car by the way!
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Jim Woodard
Don't interfere with somethin' that ain't botherin' you none.
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01-05-2007, 01:38 PM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine: BDR, 351W, 400 Horses
Posts: 520
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Not Ranked
Thank you for your thoroughness. I would guess that you went to the Vintage Motor Sport Website. BDR 426 is my car.
Thanks for the assistance.
GAry
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01-05-2007, 01:43 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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header bolts
I installed Stage 8 on my 5.0 after loosing a few header bolt. I've driven my Cobra about 8,000 miles with them and no problem. I did have to grind a few to fit. Be careful not to file to much off.
Dwight
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life's goal should be; "to be smarter than inanimate objects"
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01-05-2007, 01:58 PM
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CC Member
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Join Date: Mar 2005
Location: Savannah,
ga
Cobra Make, Engine: Unique, 351W
Posts: 260
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Not Ranked
Jim,
My header bolts on the right side are accessible from top and bottom, but left is only accessible from bottom (unless steering shaft and throttle linkage is removed), but is still very tight. I'll give it a try though. Thanks,
walter
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