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 5Likes
01-01-2015, 07:46 PM
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CC Member
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Join Date: Mar 2008
Location: Lantana,
TX
Cobra Make, Engine: Just dreaming at this point
Posts: 201
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Not Ranked
Is that a vacuum pump and if so, why?
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Advertising
01-01-2015, 07:48 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Yes it is. Pulling vacuum on the crankcase, especially with the appropriate ring pack can add some decent ponies....
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01-01-2015, 08:21 PM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,519
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Not Ranked
That's very nice. Thanks for posting the details.
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01-02-2015, 03:06 AM
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CC Member
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Join Date: Apr 2014
Posts: 103
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Not Ranked
Do heads always need to be retorqued or does it depend on wether headbolts or studs are being used to secure them?
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01-02-2015, 05:23 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
IMO, yes they always need to be retorqued, both studs and bolts.
If you torque them and mark them, then go back the next day and retorque, you will find that the gaskets have compressed and the fasteners have stretched and they will torque past your mark when you redo them.
Also, this has been the only way I've found MAJOR problems in the past. I had a couple sets of aluminum heads that were not heat treated correctly and were soft. If I had not gone back to retorque, I would have never noticed it.
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01-16-2015, 06:33 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
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01-16-2015, 06:40 PM
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CC Member
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Join Date: Dec 2014
Cobra Make, Engine: Superformance, Survival Motorsports aluminum FE 482
Posts: 662
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Not Ranked
What manifold is that?
__________________
Bill
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01-16-2015, 06:42 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Performer RPM.
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03-13-2015, 07:19 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
FINALLY!!!!!
Got this one dyno'd and delivered today. The weather has been absolutely horrible around here and last week we got dumped with 12" of snow and a little bit of ice. I've been trying to get this one to the dyno for the past 3-4 weeks...
It was a good day. Got the cam broken in, inner valve springs replaced and got some good pulls in.
Final hp was 529 hp @ 5800 and 552 lb-ft @ 4250. Real sweet little engine. Had a nice authoritative idle, accelerated good, made good horsepower...
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03-13-2015, 09:50 PM
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CC Member
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Join Date: Aug 2014
Cobra Make, Engine: Scratch Built with 482 FE
Posts: 146
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Not Ranked
Brent,
Nice work! You should move out to California, its 70s here:-) So now for dumb question, who makes the alternator pulley? The ones Ive found and have are stamped.
Thanks,
SB
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03-14-2015, 05:04 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Came with the alternator....
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03-14-2015, 06:02 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,519
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Not Ranked
Wow - that seems like a very health torque figure for a stock cranksaft 427. Should be a nice street performer.
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03-14-2015, 06:31 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Generally, a tighter LSA helps make good torque numbers...
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