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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 7:13 am 
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Turbo EFI
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Joined: Mon Jan 12, 2015 5:55 am
Posts: 1385
Location: Brightwood, VA
Car Model: 1965 Plymouth Belvedere I
Does anyone have the specs of the STX-21 cam?

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 8:54 am 
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Joined: Thu Oct 17, 2002 7:27 pm
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Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Badvert65 wrote:
Does anyone have the specs of the STX-21 cam?


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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 11:24 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 8914
Location: IRWIN PA
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272° @ 0.050" is some pretty serious stuff with over 1/2" lift. Effectively Larger than my Ruster cam.

Cool Stuff.

I am guessing it's a flat tappett, not a roller Lobe/ Lifter, correct?

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 1:28 pm 
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Joined: Wed Oct 23, 2002 7:57 pm
Posts: 8237
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Go big or go home! Go Stan Go!!!! :D :D

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 1:35 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
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Location: Park Forest, Illinoisy
Car Model: 68 Valiant
I've got a couple Mike cams that are over .600" net.

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 4:28 pm 
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Supercharged
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Posts: 8914
Location: IRWIN PA
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I am not certain that the lift is the biggest player.

It of course helps but I think the lobe profile/rate and lobe timing to the position of the piston in the cylinder have a large impact on things too.

Greg

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 4:42 pm 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 8237
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Quote:
272° @ 0.050" is some pretty serious stuff with over 1/2" lift.


Mine in the car now is 270 degree @ .050 and .570 lift. Most lift above .500 is just a "valve spring test" :D :D

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Fri Feb 09, 2024 9:39 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 14058
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Anything under .550" is a lawn mower cam
:mrgreen:

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Sat Feb 10, 2024 6:17 am 
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Turbo EFI
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Joined: Tue Nov 23, 2004 6:05 pm
Posts: 1916
Location: Desoto Texas
Car Model: 1972 Dodge Colt
slantzilla wrote:
Anything under .550" is a lawn mower cam
:mrgreen:


THERE IS MY ZILLA!!!!!!!!!


Attachments:
Cam Card STX-21 s.JPG
Cam Card STX-21 s.JPG [ 55.07 KiB | Viewed 99 times ]

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Sat Feb 10, 2024 11:54 am 
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Joined: Sun Nov 03, 2002 6:41 am
Posts: 379
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I thought you were not going to build another street engine.


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 Post subject: Re: 1972 Dodge Colt
PostPosted: Sat Feb 10, 2024 12:11 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
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Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Team Green wrote:
I thought you were not going to build another street engine.


OUCH! :oops:

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Sat Feb 10, 2024 12:23 pm 
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Joined: Wed Oct 23, 2002 7:57 pm
Posts: 8237
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Quote:
I thought you were not going to build another street engine.


Mark That is too funny!! :D :D But I do have to say that I am driving my car on the road with about that same cam!! :D

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Sat Feb 10, 2024 5:15 pm 
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Turbo EFI
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Joined: Tue Nov 23, 2004 6:05 pm
Posts: 1916
Location: Desoto Texas
Car Model: 1972 Dodge Colt
Team Green wrote:
I thought you were not going to build another street engine.


Zilla Junior!
And the hits keep coming!

Gary said this was a good one.

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 Post subject: Re: 1972 Dodge Colt
PostPosted: Tue Feb 13, 2024 6:19 pm 
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Joined: Sun Nov 03, 2002 6:41 am
Posts: 379
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What a compliment as long as Slantzilla is not offended. I will wear this name as a badge of honor!

Jr.


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 Post subject: Re: 1972 Dodge Colt
PostPosted: Wed Feb 14, 2024 1:53 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 8914
Location: IRWIN PA
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:D :D

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