Re: Bigish cam, big motor- BIG redline?
[Re: 8urvette]
#2985619
11/15/21 11:12 PM
11/15/21 11:12 PM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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Give us the lobe duration at .050 lobe lift and the lobe centers, LSA, and were you installed the intake lobes please. Are the Victor heads 440 port size or Max wedge intake port size? how about spring pressures on the seats and open pressures I'm a firm believer in using the good old butt dyno tach, when the motor quits pulling hard shift it Use the butt impression first and then look at the tach. Which brand and style and center to center length are the rods?
Last edited by Cab_Burge; 11/15/21 11:16 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Bigish cam, big motor- BIG redline?
[Re: Cab_Burge]
#2985627
11/15/21 11:28 PM
11/15/21 11:28 PM
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Joined: Jul 2011
Posts: 782 wine country
8urvette
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super stock
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OP
super stock
Joined: Jul 2011
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wine country
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here is the cam card heads are standard port- springs match cam card
Last edited by 8urvette; 11/15/21 11:30 PM.
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Re: Bigish cam, big motor- BIG redline?
[Re: AndyF]
#2985648
11/16/21 12:43 AM
11/16/21 12:43 AM
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Joined: Jul 2011
Posts: 782 wine country
8urvette
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super stock
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OP
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People used to use big huge cams like that with old 906 heads but a Victor head shouldn't require that much cam, even in a 540 unless it is a high rpm drag race only application. A bracket car with a trans brake and a 5500 stall converter would work pretty well with that cam but a street car with a four speed is going to be a nightmare. Every time you leave a stop light you'll be slipping the clutch since there will be almost zero torque at anything below 2000 rpm. I am street driving it now. Just got it all together (the car) and am working out the bugs. It isnt bad from a stop actually. Im sure the 4.10s help that out. but cruising under 3k you feel the lope of the cam, LOL! I can just let the clutch out from idle (1100 rpms) and as long as I go slow the car wont stall. But i do agree its bigger than I need. But it is what I have. Just wodnering what RPM MAX this should go to.
Last edited by 8urvette; 11/16/21 11:01 AM.
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Re: Bigish cam, big motor- BIG redline?
[Re: 8urvette]
#2985665
11/16/21 01:59 AM
11/16/21 01:59 AM
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Joined: Mar 2011
Posts: 3,171 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,171
Michigan
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Looks a lot like what we used in the 70’s in Super Stock. Smaller in lift than the popular Cam Dynamics R-286 which was .750” at the valve with stock 906 heads. Used the then popular 069J B & M converter which flashed around 4500.
With the stock heads they started to lose power around 6600. Not sure how much better your heads are.
Last edited by Transman; 11/16/21 09:30 AM.
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Re: Bigish cam, big motor- BIG redline?
[Re: 8urvette]
#2985695
11/16/21 08:58 AM
11/16/21 08:58 AM
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Joined: May 2019
Posts: 722 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 722
Lake Villa Il
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You could run it on a chassis dyno to figure out ideal shift point.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Bigish cam, big motor- BIG redline?
[Re: B1MAXX]
#2985704
11/16/21 09:41 AM
11/16/21 09:41 AM
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Joined: Jan 2003
Posts: 13,492 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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Marion, South Carolina [><]
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set the shift light to 6600, redline 7200, set the rev limiter to 7500. my And running a 284 @.050 on the street isn't the end of the world sounds about right if you want to go fast. As you seem to have found out it will idle and drive. Just keep the right side up. 5k-7k. Sounds right to me. FWIW...my 575" hemi w/ a 276/284 at .050" cam runs 5000-7200 or so.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Bigish cam, big motor- BIG redline?
[Re: INTMD8]
#2985718
11/16/21 11:03 AM
11/16/21 11:03 AM
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Joined: Jul 2011
Posts: 782 wine country
8urvette
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wine country
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You could run it on a chassis dyno to figure out ideal shift point. I will be on the dyno, but I want to get my EFI on first and start dialing in some of that. Also I have a few small things to fix before that too. Small oil leaks here and there.
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Re: Bigish cam, big motor- BIG redline?
[Re: merpar]
#2985724
11/16/21 11:31 AM
11/16/21 11:31 AM
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Joined: Jan 2003
Posts: 10,091 MN
JERICOGTX
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I Live Here
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MN
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With a Stock block 4.500 stroke, and stock main caps, I wouldn't be spinning the thing over 6000rpm.
69 GTX
68 Road Runner
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Re: Bigish cam, big motor- BIG redline?
[Re: merpar]
#2985744
11/16/21 12:44 PM
11/16/21 12:44 PM
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Joined: May 2019
Posts: 722 Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 722
Lake Villa Il
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Trust what your car likes not numbers from a dyno. Of course you can experiment at the track but if you have a power curve from a dyno you can calculate ideal shift points and see if you need to make changes in order to keep it in max average horsepower. Altering the engine combination or gearing if need be.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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