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Author Topic: roller cam?  (Read 23535 times)

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Offline jonz2pinto

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Re: roller cam
« Reply #90 on: May 06, 2014, 07:47:33 PM »
Cam was to replace  2500-7500 power range cam(hyd roller)105mph,2 nd gear(auto)3.08 rear,205 50 15 tires.would not go any faster in drive.also 390 holley 4 on 4bbl offy inake,headers,unported heads(limiting factor i believe).ignition was hipo too. Slower then stock below 15-20mph.have 4.56 and 3.40 8inch stumps that i thought of using for takeoff but would not help top end.was going for street-strip car.
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Offline Pinto5.0

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Re: roller cam?
« Reply #91 on: May 06, 2014, 08:09:16 PM »
Over the years I've had "STREET" cars with 4.56, 4.86 & 5.38 gears out back when I was street racing. I also ran slicks, soft compound street tires & rim screws on these cars. NONE of this stuff works the minute you jump on the highway & try to drive 65 mph for longer than 30 seconds. Trust me!!
 
Run the 3.40 & swap in the 4.56 for the track only. Rarely are you going to be using the engine below 2000 rpm so the slight loss of bottom end wont come into play.
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Offline amc49

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Re: roller cam?
« Reply #92 on: May 06, 2014, 11:16:48 PM »
X2. The words street/strip car and a four cylinder do not belong in the same sentence together unless there is a turbo involved. I view hopping up these as just an exercise in making the car powerful enough to hold its' own on the freeway with the big boys. Why the Contour and Focus zetecs were such a breath of fresh air, cars that could accelerate without dropping them off a cliff. That last 30 hp. is to kill for in street driveability.. ............

I ran an AMC car on the street with 5.0 gear and a 304 that would run in the elevens, it got pretty bad cruising for long distances and the gas price now would simply kill you.
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