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A Loss Of 1300 Rpm?

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Old 06-03-2010, 03:53 PM
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Default A Loss Of 1300 Rpm?

Where did it go? I had a 540 Big Chevy in my Sonic 3yrs ago & it ran up to 4900/5000 rpm.I blew a head gasket from a cracked riser & it sat in my garage for 3 yrs & I ran a little 454 for a great 3yrs! Now the motor is back together with a different cam but very similar to the last one & a single plain intake instead of the dual plain & now the motor will only go to 3700 rpm? The prop.carb,heads & exhaust are all the same! Could it really be the intake?Hard to believe!
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Old 06-03-2010, 06:11 PM
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Originally Posted by h2ohotrodder View Post
Where did it go? I had a 540 Big Chevy in my Sonic 3yrs ago & it ran up to 4900/5000 rpm.I blew a head gasket from a cracked riser & it sat in my garage for 3 yrs & I ran a little 454 for a great 3yrs! Now the motor is back together with a different cam but very similar to the last one & a single plain intake instead of the dual plain & now the motor will only go to 3700 rpm? The prop.carb,heads & exhaust are all the same! Could it really be the intake?Hard to believe!
Cam could be in wrong
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Old 06-03-2010, 07:56 PM
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X2 I bet the cam is off one tooth.
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Old 06-03-2010, 10:00 PM
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Cam could be in wrong
x3

or you have plug wires crossed

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