Re: Comp cam small block help
[Re: RAY1969CARS]
#2205003
11/30/16 02:33 AM
11/30/16 02:33 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I ain't a cam guy but it says midrange which seems close to your moderately hot combo. consider this a BTT for ya
live every 24 hour block of time like it's your last day on earth
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Re: Comp cam small block help
[Re: RAY1969CARS]
#2205409
11/30/16 07:18 PM
11/30/16 07:18 PM
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Joined: Jul 2011
Posts: 959 Chicago
PurpleBeeper
super stock
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super stock
Joined: Jul 2011
Posts: 959
Chicago
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"In general" if you have low compression, you want less valve overlap or you will make the car slower, not faster, with a cam swap. Is your static compression ratio really 8:1?
70 Roadrunner convt. street car
440+6, NOS, 4-spd, SS springs
'96 Mustang GT convt. street car
'04 4.6 SOHC, NOS, auto, lowered
"Officer, that button is for short on-ramps"
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Re: Comp cam small block help
[Re: mopowers]
#2205578
11/30/16 11:43 PM
11/30/16 11:43 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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^^This^^. If an OE piston you may be in the low 8ths or highly likely even the 7's
live every 24 hour block of time like it's your last day on earth
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Re: Comp cam small block help
[Re: elmor353]
#2206041
12/01/16 08:25 PM
12/01/16 08:25 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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Here's the deal...You proposed a solid lifter cam, the cam proposed back to you was the same cam in a hydraulic lifter version. Ho Ho Ho!!! You're in the right ballpark, but they're right, basically any 360 right up until they switched to 5.9 Magnums is going to have pretty low compression. But you have a 3500 stall converter. Anyway, here's an idea for you. Go to this page, http://www.compcams.com/Pages/401/dyno-sheets.aspxand look at the power curves of the hydraulic cams. I know it's a smallblock chevy, but it's about the same size, and about the same type of head flow. I did a lot of studying a few years ago and actually made graphs of the different curves that I laid over each other. It looked to me at that time that the XE262 gave up almost nothing to the larger cam, and that's what I'd suggest. I'd also go with a hydraulic lifter cam unless you have a set of 273 adjustable rockers and the right pushrods in your parts bin. After you get this combination figured out, a pair of Magnum heads would really help. Or, if you love your '71 heads, a set of KB "quench dish" pistons. KB362 would be my choice. R.
Last edited by dogdays; 12/01/16 08:26 PM.
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Re: Comp cam small block help
[Re: RAY1969CARS]
#2206760
12/03/16 01:13 AM
12/03/16 01:13 AM
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Joined: Nov 2006
Posts: 1,074 Manitoba Canada
67autocross
super stock
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super stock
Joined: Nov 2006
Posts: 1,074
Manitoba Canada
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I run the cam below in a 9.5 compression 340 with a 3000 stall, works nice on the street but I would say your 360 would need more squeeze to make power
Brand:Crane Cams Manufacturer's Part Number:691191 Part Type:Camshafts Product Line:Crane Mechanical Flat Tappet Camshafts Summit Racing Part Number:CRN-691191
UPC: 021174013634 Cam Style: Mechanical flat tappet Basic Operating RPM Range: 3,000-6,500 Intake Duration at 050 inch Lift: 238 Exhaust Duration at 050 inch Lift: 248 Duration at 050 inch Lift: 238 int./248 exh. Advertised Intake Duration: 300 Advertised Exhaust Duration: 310 Advertised Duration: 300 int./310 exh. Intake Valve Lift with Factory Rocker Arm Ratio: 0.480 in. Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.500 in. Valve Lift with Factory Rocker Arm Ratio: 0.480 int./0.500 exh. Lobe Separation (degrees): 114
A new iron curtain drawn across the 49th parallel
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Re: Comp cam small block help
[Re: 67autocross]
#2206763
12/03/16 01:17 AM
12/03/16 01:17 AM
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Joined: Apr 2007
Posts: 1,390 CA.
RAY1969CARS
OP
pro stock
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OP
pro stock
Joined: Apr 2007
Posts: 1,390
CA.
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I have a newer set of J heads that I'm getting done and decking them 30,000's and try to pick up some cc The old heads are smog heads I made you my own gasket match a little but no porting guides and valves I'm sticking with 194's I do you have the option of going to 202s but my head guys telling me to stay with the 194's for the street and a little bit of track performance Says the 202s will only help me if I'm trying to go above 6500
Last edited by RAY1969CARS; 12/03/16 01:20 AM.
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Re: Comp cam small block help
[Re: Neil]
#2206773
12/03/16 01:28 AM
12/03/16 01:28 AM
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Joined: Apr 2007
Posts: 1,390 CA.
RAY1969CARS
OP
pro stock
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OP
pro stock
Joined: Apr 2007
Posts: 1,390
CA.
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Re: Comp cam small block help
[Re: RAY1969CARS]
#2206776
12/03/16 01:30 AM
12/03/16 01:30 AM
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Joined: Nov 2006
Posts: 1,074 Manitoba Canada
67autocross
super stock
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super stock
Joined: Nov 2006
Posts: 1,074
Manitoba Canada
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I'm running ported J's as well with 2.02's....but if I was starting with just bare heads I would look for some aftermarket heads and not spend the money on the J's.
A new iron curtain drawn across the 49th parallel
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