DeTomaso Mailing List: January 00, Message #23

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From: JDeRyke@aol.com
Subject:Re: Holley Carb woes
Date: Sat, 1 Jan 2000 23:30:27 -0500


In a message dated 12/30/99 9:45:51 PM, ctw2flightdoc@yahoo.com writes:
snip.....
<< MY Question: what carb do folks usually run, a 600 vac sec, a 750 vac
sec, 650 double pumpers? >>

I run a #6619- a vac-sec made in 1969. Good up to about 5200 in 5th. Adding a 
750 vac-sec will add 30 hp and drop mileage by 4-8 mpg. Some say the ideal 
carb is a 700. Double-pumps need to be set up by an expert or poor mileage, 
poor throttle response and other ills will happen. A chassis dyno is helpful. 
Worn-out throttle shafts & bases on used carbs will not be fixed by 
rebuilding. Good luck-J DeRyke


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