TUBE TECHNOLOGIES, INC.

Corona, CA 92878-3226

(951) 371-4878

Mon-Fri, 8am-4pm PST

Est. since 1988

• Home <...  SMALL BLOCK HEADER OPTIONS <...  63-66 A-BODY 1-5/8 x 1-3/4" STEP HEADERS MOPAR CLASSICS A,B,E-bodies 1-5/8 x 1-3/4" STEP HEADERS *** Designed for 63-66 Early A-bodies ***   PART NUMBER:  636A             HEADER FEATURES • 1-5/8" O.D. Primary Tubes, steps up to 1-3/4" O.D. Secondary Tubes • 3.0" Collectors • 3/8" thick Flanges, laser-cut, contoured for a leak free fit • Step design:  Provides low-end response and top-end horsepower gain • Under chassis design:  Above the steering center link design offers maximum header to ground clearance • Full-length header design:  Proven power gain vs. Shorty header designs • Recommended Horsepower:  320-575 • Header Material:  Constructed of 16 gauge mild steel tubing.  Mandrel bent on sophisticated computer controlled bending machines for precise fit and uninterrupted exhaust flow. The mandrel bending process maintains a constant inside diameter of the tube for a smoother finish with no restriction of flow and no crimping of the tubes.   HEADER FITMENT PART NO'S & PRICING INSTALLATION INSTRUCTIONS COMPONENT, ACCESSORIES & REPLACEMENT PARTS SPECIAL-ORDER OPTIONS:  OXYGEN SENSOR BUNGS, EVAC or EGT FITTINGS     HEADER FITMENT • Our headers were designed to fit with the engines located to the factory specifications.  If the engine is not located correctly in the chassis, the headers will not fit properly.  We strongly suggest you check your engine location prior to installation.  (Click here for the factory dimensions) • Due to various manufacturing designs, aftermarket parts, engine configurations, suspension combinations, etc... TTi cannot ensure headers and exhaust systems to fit all combinations.  However, we have done our best to accommodate both factory and aftermarket component combinations.  In some cases, slight modification or repositioning may be required on your part to clear the specific situation. 1.  PLATFORM: 63-66 A-BODY 2.  A/LA ENGINES: STANDARD-PORT:  273, 318, 340, 360 EARLY FACTORY SMALL-PORT:  273*, 318* (Modification required for proper seal) • Early factory small-port head:  Port diameter 1.09w x 1.55h • Standard-port head:  Port diameter 1.30w x 1.80h *Special-Order:  Additional material will be added to the flange ports for headers to seal properly.  Special-Order lead-time, 6-8 weeks (modification and coating process) 3.  CYLINDER HEADS: OEM, EDELBROCK PERFORMER RPM, MOPAR PERF ALUM LA, MOPAR PERF CAST-IRON, RHS-Indy360X 4.  FRONT SUSPENSION: OEM or EQUIVALENT with torsion bars • Steering Linkage:  OEM • UniSteer Performance Rack and Pinion:  Headers will not clear 5.  ENGINE MOUNTS: OEM • Headers fit with Schumacher Creative Services engine mounts or equivalent. 6.  AUTO TRANS: YES  • 545RFE Transmission:  Headers will not clear the passenger-side bellhousing. • Floor Shift:  Some applications may require the adjustable swivel & the lower rod to be re-positioned to clear the header collector.  (See illustration sheet #3703) 7.  STANDARD TRANS: YES • Modification Required:  The drivers-side casting ear will require trimming by 3/8" for header tube clearance (See illustration) • Clutch Linkage:  OEM • Starter required with Standard Trans applications + 9.0" Flywheel (122-tooth ring gear):  Chrysler stater part no's R53005984, 56027702AC or Mopar Performance starter no's P5249644AB, P5007860, P4286522 • Starter required with Standard Trans applications + 10.5" Flywheel (130-tooth ring gear):  Must use a RobbMc Perf starter #3005 8.  FLOOR SHIFT: YES 9.  COLUMN SHIFT: NO 10.  PUSH BUTTON: YES 11.  STEERING: MANUAL & POWER 12.  AIR CONDITIONING: YES 13.  STARTERS: THE FOLLOWING STARTERS HAVE BEEN FIT-CHECKED WITH THESE HEADERS AND FOUND THERE TO BE NO CLEARANCE ISSUES... 727 AUTO TRANS • Must use a RobbMc Perf Starter #3005 904 AUTO TRANS • Chrysler part no's:  R53005984, 56027702AC • Mopar Performance part no's:  P5249644AB, P5007860, P4286522 STANDARD TRANS with an 9.0" flywheel (122-tooth ring gear) • RobbMc Performance starter:  3005 STANDARD TRANS with an 10.5" flywheel (130-tooth ring gear) • RobbMc Performance starter:  3005 14.  BELLHOUSING: ALL 15.  OIL FILTERS: OEM 90º adapter or REMOTE MOUNT OIL FILTER  (See installation instructions) 16.  OIL PANS: OEM, MILODON & ROAD RACE • Milodon part no's:  30935, 30936, 30940, 30941 • Road Race pan part no:  31595 17.  VALVE COVERS: OEM, CAST ALUMINUM, STAMPED STEEL   TOP OF PAGE     PART NO'S & PRICING •  Click here for coating option details, header maintenance, and warranty information. •  Header sets include:  Header gaskets, header bolts (12), and header reducer adapters to transition to an exhaust system.    (!) Exhaust system size required when ordering. •  Prices do not include Shipping, Handling or California Sales Tax, if applicable.  Prices subject to change without notice.   HEADER FINISH OPTIONS C0:  RAW MILD STEEL • Bare metal • Very susceptible to rust C4:  CERAMIC COATED • Silver satin (matte) exterior • Thermal barrier coated interior • Reduces under hood temperature by approximately 50º C5:  POLISHED CERAMIC COATED • Polished silver exterior • Thermal barrier coated interior • Reduces under hood temperature by approximately 50º   HEADERS FOR 67-76 A-body • A-body applications with Coilover/Tubular Suspensions (without torsion bars), use header part # TTi 340BE.    Reason; the driver-side header is one-piece, no slip tube required. 1-5/8 x 1-3/4" STEP HEADERS with 3.0" collectors   PART NUMBERS for Standard-port heads PRICE   SPECIAL-ORDER PART NUMBERS for 273-318 Small-Port heads PRICE C0:  RAW MILD STEEL   # TTi 636A-C0 $ 862.00 /set   # TTi 636A273-C0* $ 996.00 /set C4:  CERAMIC COATED   # TTi 636A-C4 $ 1043.00 /set   # TTi 636A273-C4* $ 1143.00 /set C5:  POLISHED CERAMIC COATED   # TTi 636A-C5 $ 1079.00 /set   # TTi 636A273-C5* $ 1179.00 /set             *These headers will be modified for the Early Factory 273-318 small-port heads.  Additional material will be added to the flange ports for headers to seal properly. * Special-Order lead-time 6-8 weeks * Early factory small-port diameter 1.09w x 1.55h   Coupled with a TTi Exhaust System, these headers become even more efficient!  ...Click here                        Updated: April 14, 2025     INSTALLATION INSTRUCTIONS   Header Installation Instructions (6 pages) Pic1 Pic2 Pic3 Pic4 Pic5   TOP OF PAGE     COMPONENTS & REPLACEMENT PARTS   PART DESCRIPTION PART NUMBER PRICE HEADER GASKETS HTX-900 gasket material:  A high density non-asbestos fiber metal core composite consisting of graphite coated, hi-temperature facing material chemically and mechanically fused to an expanded steel core. A proven hi-performance exhaust gasket composite used extensively within the automotive racing industry, where characteristics such as structural strength and hi-temp load retention are required to withstand severe under-the-hood operating environments. Recommendation:  Permatex 81160 gasket silicone sealant.  Use a very thin layer of Hi-temp silicone sealer on each side of gasket. Note:  (2) Supplied with header purchase. # GA-HG340 $ 29.85 /set   HEADER BOLTS 5/16"-18x1 Note:  (12) Supplied with header purchase. # BO516 $ .94 each   3.0" 3-BOLT COLLECTOR GASKET     HTX-900 gasket material:  A high density non-asbestos fiber metal core composite consisting of graphite coated, hi-temperature facing material chemically and mechanically fused to an expanded steel core. Recommendation:  Permatex 81160 gasket silicone sealant.  Use a very thin layer of Hi-temp silicone sealer on each side of gasket. Note:  (2) Supplied with header purchase. # GA-RG30 $ 4.79 each     HEADER REDUCER ADAPTERS Used to transition headers to an exhaust system. Made of 16 gauge aluminized tubing, 3/8" thick flanges, includes 3-bolt gaskets & hardware. Note:  (1 set) Supplied with header purchase.  Size required when ordering.   Collector size x Exhaust system size x Reducer adapter length   3.0" x 2.5" pre-bent design reducers # RED30X25A6366 $ 55.50 /set   3.0" x 3.0" pre-bent design adapters # RED30X30A6366 $ 59.50 /set     TOP OF PAGE

 Updated: April 14, 2025