Pontiac - Street No question too basic here!

          
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  #21  
Old 07-28-2023, 11:26 AM
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Quote:
Originally Posted by PAUL K View Post
Cam is a older Comp 300B, 265/276 @ .050". LSA is 106, ICL 106.

Wow can you imagine how fast this would run with a "non-stinky, eye friendly, don't throw it down the hill behind the shop" 114 LSA ......LOL

But all seriousness good job Brent. We need all the Pontiacs we can get representing us at the track.


Stan

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  #22  
Old 07-28-2023, 11:57 AM
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Love the humor, and for sure I deserve some pokes in the backside on occasion when it comes to cam stuff.....good thing I have my big-boy britches on today so it bothers me not in the least.....

Anyhow, the conventional wisdom with all engine builds are to choose the the cam for the CID, head flow, compression ratio and USE OF THE VEHICLE.

Can't argue the results here considering how simple the combo is and not using a lot of exotic parts to get er done......

Anyhow, OUT of here for a long weekend and to be there for my grand sons birth in a few days.....have fun gentlemen, even if it's at my expense!.......

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  #23  
Old 07-28-2023, 12:40 PM
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Quote:
Originally Posted by i82much View Post
Isn't there some conventional wisdom that a shorter stroke tends to benefit from a tighter LSA?

I also wonder about how the conventional wide-LSA wisdom for cams in the 230-240 degree range might change as you increase duration even for the longer stroke combos, I mean I run OF on a 112 in a 4.25 stroke combo, would I be better off on a 106 or 108 if I had a 250+ @ .050 cam?
It depends. Let start with. Street or race only? What kind of vacuum do you want at idle. The tighter the LSA for the same lobes the less the idle vacuum will be.

Stan

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  #24  
Old 07-28-2023, 12:42 PM
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Quote:
Originally Posted by Cliff R View Post
Love the humor, and for sure I deserve some pokes in the backside on occasion when it comes to cam stuff.....good thing I have my big-boy britches on today so it bothers me not in the least.....

Anyhow, the conventional wisdom with all engine builds are to choose the the cam for the CID, head flow, compression ratio and USE OF THE VEHICLE.

Can't argue the results here considering how simple the combo is and not using a lot of exotic parts to get er done......

Anyhow, OUT of here for a long weekend and to be there for my grand sons birth in a few days.....have fun gentlemen, even if it's at my expense!.......
Cliff,
I agree.

Stan

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  #25  
Old 07-28-2023, 06:11 PM
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Glad we agree on something.

I think that's a first.

That calls for a celebration (I'm always looking for a reason). Gonna whip up an Old Fashioned made with Bulleit Barrel Strength and smoked with cherry wood. I may have to have more than one they are so good!......

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  #26  
Old 07-29-2023, 10:31 AM
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My copy of John Schloe's 69 RAIV 400 stocker cam is 274/274@ 0.050! Probably not a good idle or work power brakes But got the car in the 10s way back when.

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  #27  
Old 07-29-2023, 11:58 AM
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Quote:
Originally Posted by Cliff R View Post
Glad we agree on something.

I think that's a first.

That calls for a celebration (I'm always looking for a reason). Gonna whip up an Old Fashioned made with Bulleit Barrel Strength and smoked with cherry wood. I may have to have more than one they are so good!......

That sounds like a damned fine cocktail! See you on the bourbon trail!


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