Anyone here have the Welded Dynomax Ultraflos #17560 20" case 2.5 in an out. I was wondering about resonance. I went with the largest case with good flow numbers to tone it down.
Dougs are installed with exhaust system but can't upload any pics. Anyone know why?
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69 400 Block, .030 over, KRE eagle stroker kt, KRE,CNC ported e-heads 310 cfm, port match RPM , comp roller 236/ [email protected] 586/600 lift 110 LS. 1.5 HS roller rockers, 350 Transmission, Red Neck tight 3500 stall converter, Ford 9” with 3.75’s, Strange center section, Moser 31spline axels, 29”Mt slicks, HRPARTSNSTUff anti roll system, Doug’s Headers 3.5” collectors, 22”Dynomax mufflers w/ H-pipe, Cliffs Q-jet, Fuel cell with sumps, Mallory 140 fuel pump and filter. Denny’s 3.5” drive shaft.
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