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Old 05-29-2012, 02:57 PM
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Summit Cams 1185-1103 Whos Used Them?

having spent to much time scouring summits site trying to find a cam suitable for my 357 build using flat top pistons & now 64cc heads with a compression ratio of 9.8.1 Ive whittled it down to 2 possible cams.


sum-1785
Hydraulic flat tappet
Basic Operating RPM Range 1,800-5,200
Intake Duration at 050 inch Lift 218
Exhaust Duration at 050 inch Lift 218
Duration at 050 inch Lift 218 int./218 exh.
Advertised Duration 274 int./274 exh.
Valve Lift with Factory Rocker Arm Ratio 0.450 int./0.450 exh.
Lobe Separation (degrees) 106

Lopey-rough idle, excellent midrange power in street vehicles. Likes 9:1 and higher compression, largest camshaft that will work with stock stall.

sum1103
Cam Style Hydraulic flat tappet
Basic Operating RPM Range 1,600-5,200
Intake Duration at 050 inch Lift 214
Exhaust Duration at 050 inch Lift 224
Duration at 050 inch Lift 214 int./224 exh.
Advertised Duration 272 int./282 exh.
Valve Lift with Factory Rocker Arm Ratio 0.442 int./0.465 exh.
Lobe Separation (degrees) 112

Camshaft Manufacturers Description Fair idle, low midrange torque/horsepower, works well in 327 and higher c.i.d. engines. Largest camshaft with stock converter.

so which would people recommend to work best in a street vehicle with this compression? I don't mind a lumpy idle as long as id doesn't stall & bog cruising away from the lights.
all out power isn't the aim hear but its always welcome

motor will be in a light car "ford pop"
need to get this on order asap so input needed.

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Old 05-31-2012, 02:36 PM
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I got the 1103 in my 283 with a stick in my roadster and I'm not really happy with it going to go much bigger for my next one. It has a slight loop at idle but behaves nice all around.
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