Anyone running the new thumper series cams from comp??

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Feb 23, 2009 | 08:45 PM

#21

BlackGMC

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From: Fort Worth - TX

Quote:

Originally Posted by dlt76028

aw thank you mr. cam man

I just summed up all my Cam knowledge in the one sentence above...

Feb 23, 2009 | 08:47 PM

#22

dirt track racer 81

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From: Hennessey, Oklahoma

Quote:

Originally Posted by BlackGMC

it increases the overlap without increasing the DCR.... More Overlap makes the idle choppy and helps with High RPM scanvengeing (sp), so it make more power up top...

Im assuming thats why dirt/circle tracks are are usually on a 106 lsa. these type of cars are always at high rpm 6000-7500 rpm constatly

Feb 23, 2009 | 08:49 PM

#23

BlackGMC

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From: Fort Worth - TX

Quote:

Originally Posted by dlt76028

whats the reasoning in the wide separation? tuning?

Quote:

Originally Posted by dirt track racer 81

Im assuming thats why dirt/circle tracks are are usually on a 106 lsa. these type of cars are always at high rpm 6000-7500 rpm constatly

Yep the lower the LSA adds TQ and it also increases the overlap... LSA is kinda a win-win thing!!!

Feb 23, 2009 | 09:13 PM

#24

budhayes3

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From: Hackensack, NJ

Man, that's a ****-ton of exhaust duration and a tight lsa...interesting grind.

Feb 23, 2009 | 09:40 PM

#25

007gmc

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From: memphis tn

anyone know what the effects of running more lift on the intake side does? i just noticed that about that series of cams

Feb 23, 2009 | 10:01 PM

#26

AdioSS

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From: East Texas 75707

more lift on the intake means more available airflow.

Tight LSA and considerably longer exhaust duration than intake duration are more common with the older generation small blocks. In my opinion, that is a long duration cam for a 4.8L. I hope you have at least a 3500 stall and lots of gear.

I'm also interested in seeing how it does.