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74 F250 Highboy Header back suggestion.

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  • 74 F250 Highboy Header back suggestion.

    Hi there. I recently purchased these headers and was wondering what Flowtech header back exhaust kit would be most appropriate and add the best performance: https://www.holley.com/products/exha...parts/32542FLT

    Also, the instructions say the email me header to head flange should be cut 3/4 of the way through for shipping, and to complete that cut before installing to allow the header to be easily installed around the engine mount. I don’t see that these headers have been precut. Do I just pick a point in the middle and cut them? Any concern with cutting through the ceramic coating. Thanks for any and all advice!

  • #2
    Contact Holley/Flowtech Tech Service (LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crank & rods, forged pistons, Trick Flow T/W 11R 205 CNC comp ported heads, 12:1 comp ratio, 232°-244° duration/.623" lift/114° LSA camshaft, TFS R-Series FTI comp ported intake, BBK 80mm T/B, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal dual 12" fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio AOD, 3000 RPM C6 converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

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