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  #328  
Old 05-26-2021, 09:38 AM
ta man ta man is offline
Ultimate Warrior
 
Join Date: Apr 2006
Location: Clinton,Ontario,Canada
Posts: 5,366
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I figured I would add to this thread with an update and a finding. Anyone that has followed this thread will have noticed the ProSystems carb could not 60 foot with the Holley. Not once did it go under 1.6 compared to 1.55s with the Holley.
So one of the golden rules of tuning is check for full throttle..some how this guy missed the memo. So my carb did have full throttle..but it was taking approximately 2 seconds to achieve it...due to the secondary accelerator pump arm hanging up on the rear pump cam. I discovered this a few nights ago when I was investigating why my pedal felt so stiff and has felt stiff.
This must explain why the car picked up time dropping the shooter size way down because the car was only leaving with maybe 700cfm available upon the hit..but never went under a 1.6 time.

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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2
373 gears 3200 Continental Convertor
best et 10.679/127.5/1.533 60ft
308 gears best et 10.76/125.64/1.5471