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Author
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Topic: B cam advanced, retarded or straight up
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89TRUNK
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Member # 2506
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posted
 
 
I'm offered a B cam for next to nothing, i've heard people run these cams advanced, retarded and staright up... Anybody have any real world experience with the B cam besides staright up? Is it even worth throwing the b cam in. The motor is already out and im swapping the pan and timing cover for a carbed application. Rest of the engine is; stock GT40, heads, 1.7 rockers, rpm intake, full length headers backed by a t5.
If i do run the cam i was thinking of advancing it a couple degrees to move the power band down since the heads run out of steam up top.
Posts: 1843 | From: Bay Area | Registered: Feb 2003
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Captain Obvious
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Member # 7842
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posted
[ April 19, 2011, 10:09 PM: Message edited by: 68stanger ]
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It's NOT illegal. It's just frowned upon, like masturbating on an airplane.
Posts: 1976 | Registered: Aug 2007
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89TRUNK
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Member # 2506
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posted
Just looking for a nice driver. The longblock i'm using is from a 95 cobra. Another option is using the stock cam, but since i have it apart it's probably the best time to throw something in there.
Posts: 1843 | From: Bay Area | Registered: Feb 2003
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turbo50
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Member # 6700
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posted
My TFS headed carbed capri ran like a raped ape with the b cam and 1.7 rockers, retarded 2 degrees victor jr intake, stock bottom and T-5
I retarded it because I had 4.10s and plans for nitrous.
It went 12.00 at 80 mph the first time out on the nitrous. Killed a piston because my damn used nitrous solenoid hung open.
Back at the track, fresh 306 EXACT same combo went 10.80 on the nitrous 150shot.
Didnt get another run because that was the night the Mopars rear axle broke and took out the christmas tree. I only got one run at Sac.
That was with a 1.52 60 foot leaving on the nitrous.
28 inch tall slick.
So I guess the question is what gears and ultimate plans?
It would have probably been kind of a dog down low if I didnt have 4.10s.
On motor I would shift at 6400 and on the bottle I would shift at 6100.
I never ran it without the nitrous, didnt really see the point.
So my real world experience is with retarding it two degrees and I liked it.
Dan
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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89TRUNK
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Member # 2506
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posted
It's going to be a nice driver, 3.55 or 3.73's. Won't see the track much. I don't plan on going pushing past 52-5500. Car will weigh around 3k
From what i hear it has 5 degrees advanced from the factory, is that correct?
Posts: 1843 | From: Bay Area | Registered: Feb 2003
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turbo50
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Member # 6700
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posted
quote:
Originally posted by 89TRUNK:
It's going to be a nice driver, 3.55 or 3.73's. Won't see the track much. I don't plan on going pushing past 52-5500. Car will weigh around 3k
From what i hear it has 5 degrees advanced from the factory, is that correct?
correct most alphabet cams do.
to be honest, for your cylinder head combination, I would run it straight up with 1.7s on the exhaust (carbed) tho I have no PERSONAL experience with GT40s and this cam with a carb.
Dan
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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Camara90
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Member # 134
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posted
With a long runner efi I would say for sure to retard it 4 degrees. The long runner intakes seem to prefer the later closing events.
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92GT,stock short block,9:1 TFS 170's,perf rpm,custom cam,1 5/8 shorties,C4 trans.
std. 356hp, 350tq
11.85@111.9mph on motor.
Posts: 2351 | From: 707 | Registered: Jan 2001
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turbo50
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Member # 6700
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posted
quote:
Originally posted by Camara90:
With a long runner efi I would say for sure to retard it 4 degrees. The long runner intakes seem to prefer the later closing events.
+1
+1
but GT40 headed carby motor..not too sure.
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.........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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89TRUNK
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Member # 2506
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posted
what are your thoughts on a carbed motor w/rpm intake. Would a carb spacer make a difference if it gets retarded with runner volume and velocity.
Posts: 1843 | From: Bay Area | Registered: Feb 2003
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copcar
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Member # 10113
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posted
I have run that cam in nearly every single application under the sun. For your combination (carbed) and the gear range you have chosen I suggest running it 2* advanced with 1.7's. NA 302's like full intake lift at 105*. This assumes 15/8 headers and a 650 street demon carb. (my choices).
Posts: 485 | Registered: Jun 2010
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707clone
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Member # 10342
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posted
quote:
Originally posted by copcar:
I have run that cam in nearly every single application under the sun. For your combination (carbed) and the gear range you have chosen I suggest running it 2* advanced with 1.7's. NA 302's like full intake lift at 105*. This assumes 15/8 headers and a 650 street demon carb. (my choices).
so what about with the efi application,would u say to run it str8 up or degree it 2-4*?(gt40 heads/u/l intake!
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Maybe I should get drunk off my HATERADE elsewhere?
I was slow to take the hint, so I'm taking a break from CAFords for the rest of the month. Now excuse me while I enjoy some cereal. Mmmmm Mmmmm good. Who else wants to join me?
Lil Ric!
R.I.P CHARLIE HUSTLE!
91gt p heads,b cam,3:55s,exhaust
89 coupe just startin on him
Posts: 2614 | From: v a dubble | Registered: Sep 2010
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Camara90
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Member # 134
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posted
Well true straight up would be to degree it with all the advance taken out. You are talking about running it dot to dot. Before you go any further do you plan on degreeing cam?
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92GT,stock short block,9:1 TFS 170's,perf rpm,custom cam,1 5/8 shorties,C4 trans.
std. 356hp, 350tq
11.85@111.9mph on motor.
Posts: 2351 | From: 707 | Registered: Jan 2001
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Ryan_LX
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Member # 7089
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posted
does this effect emissions at all?
[ April 21, 2011, 01:05 PM: Message edited by: Ryan_LX ]
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Jesus is king!
Posts: 1718 | From: no where | Registered: Sep 2006
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707clone
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Member # 10342
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posted
quote:
Originally posted by Ryan_LX:
does this effect emissions at all?
aint the b cam smog illegal anyway?
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Maybe I should get drunk off my HATERADE elsewhere?
I was slow to take the hint, so I'm taking a break from CAFords for the rest of the month. Now excuse me while I enjoy some cereal. Mmmmm Mmmmm good. Who else wants to join me?
Lil Ric!
R.I.P CHARLIE HUSTLE!
91gt p heads,b cam,3:55s,exhaust
89 coupe just startin on him
Posts: 2614 | From: v a dubble | Registered: Sep 2010
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copcar
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Member # 10113
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posted
mine is +2*. With the catted X pipe it makes the exact numbers in my vid. Passes California emissions like a champ.
http://www.youtube.com/watch?v=_BM86FZ85EI
[ April 22, 2011, 02:24 AM: Message edited by: copcar ]
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12.37@ 109.34.NA 894DA Old Nitto 555 DR's Gt40 irons. B cam/1.7's, All emissions equipment on the car, stock air box. UPR catted X pipe.
Posts: 485 | Registered: Jun 2010
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707clone
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Member # 10342
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posted
quote:
Originally posted by copcar:
mine is +2*. With the catted X pipe it makes the exact numbers in my vid. Passes California emissions like a champ.
http://www.youtube.com/watch?v=_BM86FZ85EI
good to kno that!
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Maybe I should get drunk off my HATERADE elsewhere?
I was slow to take the hint, so I'm taking a break from CAFords for the rest of the month. Now excuse me while I enjoy some cereal. Mmmmm Mmmmm good. Who else wants to join me?
Lil Ric!
R.I.P CHARLIE HUSTLE!
91gt p heads,b cam,3:55s,exhaust
89 coupe just startin on him
Posts: 2614 | From: v a dubble | Registered: Sep 2010
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