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Author Topic: CAM AND HEAD BREAK IN  (Read 2086 times)

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Offline ronj1977

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CAM AND HEAD BREAK IN
« on: October 05, 2006, 03:00:35 PM »
BROKE IN CAM AND HEADS LAST NIGHT  RUNNING 1976 PONCHO 400 MOTOR WITH 1969 # 62 HEADS AND A SUMMIT 2801 CAM SET TIMING PER CHILTON MANUAL 12 BTDC AND GAPED PLUGS TO .060 GOT ON IT ONCE THIS A.M. AND IT DIDNT SEEM TO HAVE ANY MORE UMPH THAN BEFORE WHAT COULD BE CAUSEING THIS  ANY ADVICE WOULD HELP THE REST OF SPECS ARE 1978 INTAKE AND 4-SPEED WITH HEADERS
 COULD THIS BE A FUEL ISSUE ?
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Offline MrMojoRisin681

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CAM AND HEAD BREAK IN
« Reply #1 on: October 06, 2006, 07:14:02 PM »
Could need to be tuned.  Not sure if you did that already or not.  Or could be some other fuel issue.
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1978 Firebird Formula 350 SBC

Offline bad76

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CAM AND HEAD BREAK IN
« Reply #2 on: November 08, 2006, 03:09:06 PM »
What is the specs on your cam? I am running a large roller cam and my timming is 18 before tdc and 36 total at 3000 rpms with mechanical advance. Your cam card should give you some instruction on what timming you need.
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Offline ronj1977

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CAM AND HEAD BREAK IN
« Reply #3 on: November 09, 2006, 12:12:50 AM »
timing is set at 16 degrees btdc. not much knowledge in trhis area how do you now when you are all in on timeing i have the summit 2801 cam w/4 speed factory setting on carb and  distr. what to expect from insureing all in by 2,500
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Offline bad76

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CAM AND HEAD BREAK IN
« Reply #4 on: November 13, 2006, 01:33:43 PM »
Have you checked your timming with a timming light? You may need to go with a quicker vacuum advance.
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