HotRod777
Well-Known Member
I need some advice on what to put in the secondaries. This is a cruise car I did for my Dad, just a 1 day a week driver. So far the car is near perfect with the exception of being pig-rich once you get into the secondaries.
Here are the details:
383, +.040, TRW flattops, .038 quench. 915 1.74 heads, bowls and ports lightly cleaned up. Cranking compression 170psi. Comp Thumper (the smallest one) HP manifolds, 2.5” TTI. Chrysler iron 343hp intake with 2 650cfm AVS2’s. Timing is 24° initial, 36°, runs great/ no ping with 93 Sunoco that we have in our area. 727, Hughes 2500, 3:55/grip and 27" tires. The carbs are 1:1 linkage and I’ve leaned the primary power and cruise 2-ish stages with dot #18 from the chart for the 1905 carbs. I also lightened up the springs to yellows and am using the slowest pump shots. This whole setup works and runs very well except once you go past 1/2 pedal it dumps way too much fuel. (Black smoke, almost stalls)
Stock is .098’s. I was thinking of trying .080’s. Does anyone have any input? Buying 4 of them at a time is $30 bucks so I don’t want to keep throws jets at it blindly. And again this is a cruise car, I’m not tuning for perfection I just got to get it more in the ballpark. (And I know duel 500’s would have been a way better choice but I already had one of the 650’s.
Here’s a short Vid if you are curious, the exhaust dumps are open in the vid, my Dad gets his kicks from those.
Thanks for any input!
Here are the details:
383, +.040, TRW flattops, .038 quench. 915 1.74 heads, bowls and ports lightly cleaned up. Cranking compression 170psi. Comp Thumper (the smallest one) HP manifolds, 2.5” TTI. Chrysler iron 343hp intake with 2 650cfm AVS2’s. Timing is 24° initial, 36°, runs great/ no ping with 93 Sunoco that we have in our area. 727, Hughes 2500, 3:55/grip and 27" tires. The carbs are 1:1 linkage and I’ve leaned the primary power and cruise 2-ish stages with dot #18 from the chart for the 1905 carbs. I also lightened up the springs to yellows and am using the slowest pump shots. This whole setup works and runs very well except once you go past 1/2 pedal it dumps way too much fuel. (Black smoke, almost stalls)
Stock is .098’s. I was thinking of trying .080’s. Does anyone have any input? Buying 4 of them at a time is $30 bucks so I don’t want to keep throws jets at it blindly. And again this is a cruise car, I’m not tuning for perfection I just got to get it more in the ballpark. (And I know duel 500’s would have been a way better choice but I already had one of the 650’s.
Here’s a short Vid if you are curious, the exhaust dumps are open in the vid, my Dad gets his kicks from those.
Thanks for any input!