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| Carb size for a 598 | Login/Join |
DRR Pro |
598 Profiler 12* motor 2020 lbs dragster Shift at 7400 430 gears Big bubbas What CFM carb would work best for 1/8th mile racing Currently running Alky Terminator and been a best of 4.54. Wondering if a gas carb might work better. Thanks in advance Brian Mollison 2013 American Dragster 2020 Sumerduck Dragway VA Top ET Champion 2017 Sumerduck Top ET & SSS Track Champion 2017 MAC Top ET Track Champion 2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion 2008 IHRA Division 1 Top ET Bracket Final Runner-up 2007 Colonial Beach Dragway Top ET Track Champion | ||
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| DRR Pro |
Call APD. They will set you up https://apdracing.com/ -------------------- Bob Payton S/P, T/D, S/C, TOP 309Z, 393, 3093, 8X93  www.apdracing.com www.diamondracecars.com www.callies.com | |||
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| DRR Sportsman |
Got a 598 SR20 Multiple carbs will work on it, but a smaller carb will be more consistent typically (less sensitive to air changes) I was told I could go from 1050-1700 Was ultimately between a 1250 and a 1450 and settled on a 1250 Was between APD and TMC and went APD Other 2 builders I would consider are Gary Williams or Bob book | |||
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| DRR Pro |
Define “better”……… what’s wrong with the present mfi? | |||
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| DRR Sportsman |
Reading your stuff more Yes, a gas carb will run faster on your setup unless your setup was specifically built to run alcohol If looking for ET, book would be my first call | |||
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DRR Sportsman |
1450 Will bracket race better than the 2.5" throttle bore carbs, on gas that is. Jeremiah Hall | |||
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DRR Pro |
Unpopular opinion: Twin 1050 Dominators on a tunnel ram. "Despite the high cost of living, it remains popular." Dave Cook N375 | |||
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| DRR S/Pro |
A dyno sheet for your 598 would help. What and where was the peek HP reading and what was the peek torque reading. Bob | |||
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| DRR Pro |
I do not have a dyno sheet. Cam I have right now is 860/850 @.050- 283-310 LSA 115 DEGREED in at 113 Brian Mollison 2013 American Dragster 2020 Sumerduck Dragway VA Top ET Champion 2017 Sumerduck Top ET & SSS Track Champion 2017 MAC Top ET Track Champion 2009 Sumerduck Dragway Va Top ET & IHRA SSS Track Champion 2008 IHRA Division 1 Top ET Bracket Final Runner-up 2007 Colonial Beach Dragway Top ET Track Champion | |||
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DRR Trophy |
Have to agree, most consistent combos ever on pump E85! Twin 750, 1000 (act flow 870), 950 and 1050. | |||
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DRR Pro |
1250. 1450 will be zero quicker | |||
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| DRR Sportsman |
^^^You might be suprised to find that retarding the cam back to 115, on ALKY, might be the et you are looking for. It wont be .1, but it could very well be a solid .5. That cam is gonna build some cylinder pressure with what you have, and alky doesnt need that kind of cylinder pressure. Jeremiah Hall | |||
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DRR Trophy |
+1 "Trust the Plan" | |||
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DRR Pro |
No way would I ever switch back to gas and carbs after running alky injection.....but that's just me.... Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer | |||
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