Well after a very busy stretch for quite some time, life slowed down enough for me to work on the car. Last night off came the Victor W2 and Edelbrock 800 AVS 2, and on went the Pro Dominator and 2 AVS 2 650's.
I know these are not the beloved 4150 carbs with the utmost in tune ability, but I really loved the 800 AVS 2 I have been running for the past 2 years. This car sees a lot of highway usage, as well as spirited driving, the AVS 2 carbs for me seem to be a nice compromise between performance, ease of operation and simplicity.
I chose to run 2 650's vs the recommended 500's, so I don't pigeon hole myself if needs require later. The primary bores are the same as the 500's with the difference being the larger boosters of the 500's. I bought some booster sleeves to fit over the 650 boosters, effectively dropping 100cfm out of the carbs with a non permanent mod, now the primary sides are identical to the 500 AVS 2 carbs, with secondary side on demand.
The elevation where I live is 3000 ft. In the past, I have always jetted carbs down 2 steps from sea level, out of the box calibration to accommodate the elevation, the results are usually close. In this case, I have jetted the primary side down 2 steps from Edelbrocks standard 500 tuning, and the secondary side down 2 steps from their 650 setpoint. This was to be my baseline setting.
Having not run dual quads before I am now second guessing my baseline settings, thinking that due to the vaccum signal being split between 2 carbs, the draw on each venturi, and jet may actually be less, meaning I should have left jetting a little richer?
I am also installing an AEM 02 sensor to assist in my tuning once I get up and running.
I am not looking for someone to tune my car from a distance, rather share their thoughts on initial settings, and whether I am off base with my thoughts.
Please no comments about should have used 4150's, not looking to be class winner at the track, while not a fair grounds cruiser either. This car gets driven, and sees trips as well as some daily use in summer.
I know these are not the beloved 4150 carbs with the utmost in tune ability, but I really loved the 800 AVS 2 I have been running for the past 2 years. This car sees a lot of highway usage, as well as spirited driving, the AVS 2 carbs for me seem to be a nice compromise between performance, ease of operation and simplicity.
I chose to run 2 650's vs the recommended 500's, so I don't pigeon hole myself if needs require later. The primary bores are the same as the 500's with the difference being the larger boosters of the 500's. I bought some booster sleeves to fit over the 650 boosters, effectively dropping 100cfm out of the carbs with a non permanent mod, now the primary sides are identical to the 500 AVS 2 carbs, with secondary side on demand.
The elevation where I live is 3000 ft. In the past, I have always jetted carbs down 2 steps from sea level, out of the box calibration to accommodate the elevation, the results are usually close. In this case, I have jetted the primary side down 2 steps from Edelbrocks standard 500 tuning, and the secondary side down 2 steps from their 650 setpoint. This was to be my baseline setting.
Having not run dual quads before I am now second guessing my baseline settings, thinking that due to the vaccum signal being split between 2 carbs, the draw on each venturi, and jet may actually be less, meaning I should have left jetting a little richer?
I am also installing an AEM 02 sensor to assist in my tuning once I get up and running.
I am not looking for someone to tune my car from a distance, rather share their thoughts on initial settings, and whether I am off base with my thoughts.
Please no comments about should have used 4150's, not looking to be class winner at the track, while not a fair grounds cruiser either. This car gets driven, and sees trips as well as some daily use in summer.
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