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  #1  
Old 04-17-2024, 10:25 PM
Matt1970gto Matt1970gto is offline
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Launch RPM?
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Interesting, how different are the cams? By the numbers you posted it would seem your cam is quite a bit bigger?
Dads is 280/294 .855 .837 115 lobe sep
Mine 284/306 .954 .936 121 lobe sep

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Old 04-17-2024, 10:40 PM
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Dads is 280/294 .855 .837 115 lobe sep
Mine 284/306 .954 .936 121 lobe sep
Just curious who picked/made you cam?
I would try another cam.

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Old 04-17-2024, 11:01 PM
Matt1970gto Matt1970gto is offline
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Interesting, how different are the cams? By the numbers you posted it would seem your cam is quite a bit bigger?
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Just curious who picked/made you cam?
I would try another cam.
Engine builder & LSM.. I had a twin to dads cam in it at first but it was worse.

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Old 04-18-2024, 08:24 AM
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Dads is 280/294 .855 .837 115 lobe sep
Mine 284/306 .954 .936 121 lobe sep
There is going to be a huge difference between those two cams. That second one is going to move the power band much higher in the RPM range.

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Old 04-18-2024, 09:23 AM
Matt1970gto Matt1970gto is offline
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There is going to be a huge difference between those two cams. That second one is going to move the power band much higher in the RPM range.
Yea, dad’s motor only dropped 11hp from 7000-7800 but by 7800 it was dropping. My motor just starts making good #s @
around 7800 & I pulled it to 8400. Only 7 passes on this setup & no clean runs yet but I was only crossing @ 7550-7600 @ Gainesville for the gator nationals this year.

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Old 04-18-2024, 09:27 AM
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Yea, dad’s motor only dropped 11hp from 7000-7800 but by 7800 it was dropping. My motor just starts making good #s @
around 7800 & I pulled it to 8400. Only 7 passes on this setup & no clean runs yet but I was only crossing @ 7550-7600 @ Gainesville for the gator nationals this year.
Can you post dyno sheets for both engines?

What does each engine have for stall speed?

Stan

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  #7  
Old 04-18-2024, 10:47 AM
Matt1970gto Matt1970gto is offline
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Can you post dyno sheets for both engines?

What does each engine have for stall speed?

Stan
Both have 6400.
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Old 04-18-2024, 10:54 AM
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Is your throttle stop/delay one that has you at an idle/set rpm then opens when ready to go, or on the mat and the 2 step keeps it at a set rpm until ready to go?


Nice dyno sheets!



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Old 04-18-2024, 12:06 PM
Matt1970gto Matt1970gto is offline
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Originally Posted by Stan Weiss View Post
Can you post dyno sheets for both engines?

What does each engine have for stall speed?

Stan
Quote:
Originally Posted by johnta1 View Post
Is your throttle stop/delay one that has you at an idle/set rpm then opens when ready to go, or on the mat and the 2 step keeps it at a set rpm until ready to go?


Nice dyno sheets!
My stop rpm is 3750 & remain in low gear while on the stop.

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