MS4 Guys
Thread Starter
Intermediate
Joined: Feb 2005
Posts: 32
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From: Gainesville Fl
MS4 Guys
I bought a MS4 cam from a user online and im putting in it with my stock 241 heads and valvetrain (becides prc dual spring kit). I was wondering if anyone has the same setup and what length pushrods you used.
Thanks
Robert
Thanks
Robert
Race Director
Joined: Oct 2002
Posts: 16,477
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From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
The base circle dia of your MS4 cam is smaller than the stock cam lobe, so yes, the perfect pushrod length does change.
7.425" would probably be best with stock heads/gasket.
7.425" would probably be best with stock heads/gasket.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Almost every tuner supplies 7.400" pushrods with every cam kit they sell. They feel it is a "one size fits all" deal.
Then there are also the many threads posted about the "sewing machine sound", and most everyone, including those tuners, call it "normal", and attribute the noise to other things like steeper lobe ramp rate, dual springs, etc. .
If you accept that sort of "it's normal - don't worry about it" mentality...then you have lots more you need to learn before further modifying your engine.
btw, how would too short of pushrod cause excess preload?
Then there are also the many threads posted about the "sewing machine sound", and most everyone, including those tuners, call it "normal", and attribute the noise to other things like steeper lobe ramp rate, dual springs, etc. .
If you accept that sort of "it's normal - don't worry about it" mentality...then you have lots more you need to learn before further modifying your engine.
btw, how would too short of pushrod cause excess preload?
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Almost every tuner supplies 7.400" pushrods with every cam kit they sell. They feel it is a "one size fits all" deal.
Then there are also the many threads posted about the "sewing machine sound", and most everyone, including those tuners, call it "normal", and attribute the noise to other things like steeper lobe ramp rate, dual springs, etc. .
If you accept that sort of "it's normal - don't worry about it" mentality...then you have lots more you need to learn before further modifying your engine.
btw, how would too short of pushrod cause excess preload?
Then there are also the many threads posted about the "sewing machine sound", and most everyone, including those tuners, call it "normal", and attribute the noise to other things like steeper lobe ramp rate, dual springs, etc. .
If you accept that sort of "it's normal - don't worry about it" mentality...then you have lots more you need to learn before further modifying your engine.
btw, how would too short of pushrod cause excess preload?
