================================================================= VEHICLE AND INTENDED USE INFORMATION Year, Make, and Model of Vehicle __________________________________________________ Weight __________ If vehicle is used for daily transportation, should header be designed to MAXIMIZE: Street Performance _______ or Drag Strip Performance _______? If not used for daily transportation, is vehicle primarily: Raced with occasional street use _______ or Raced ONLY _______? Track length: 300 ___, 1/8 Mile ___, 1/4 Mile ___, 1/3 Mile ___, 3/8 Mile ___, 1/2 Mile ___, Other length ___________ Other use (Pulling, Mud racing, Sand dragging, Circle Track, Closed Course Racing, Experimental Aircraft, etc.). Please describe. __________________________________________________________________________________________________ __________________________________________________________________________________________________ Raced through mufflers? ______ Brand name, body length, inlet/outlet diameters ______________________________ Class(es) and Sanctioning Body(ies) vehicle is competing in _______________________________________________ ENGINE INFORMATION I. BASIC INFORMATION A. Year, Make, Stock Horsepower Rating of Engine ____________________________________________________ B. Number of Cylinders ____; Cubic Inches ______; Bore ______; Stroke ______; Compression Ratio ______ C. Is the engine: FACTORY STOCK (never been apart) _____; recently rebuilt _____; balanced _____; blueprinted _____? D. Estimated Peak Engine Horsepower __________ (This value is very IMPORTANT - dont omit it! Also, please be realistic.) E. Estimated Peak Rear Wheel Horsepower __________ (This value can be left out - above Peak Horsepower value cant be left out.) II. INDUCTION A. Carburetion (Quantity, Manufacturer, Model, CFM Rating) ______________________________________________ B. Intake Manifold - Manufacturer, Model, Design (180o, open plenum, tunnel ram, etc.) _______________________ ______________________________________________________________________________________________ C. Other (Injection, Supercharged, Nitrous Oxide, etc.) __________________________________________________ ______________________________________________________________________________________________ D. If using Nitrous Oxide, should the headers be optimized to work with the Nitrous On _______ or Off _______? E. If using a Supercharger on the street, should the headers be designed to work with it producing full boost or designed to work better in more "normal" driving (little or no boost)? Full boost ____; Normal Driving ____ III. CYLINDER HEADS A. Year, Model/Version, Manufacturer, Cast Iron/ Aluminum _____________________________________________ B. Modifications__________________________________________________________________________________ 1. Intake Valve Size_________________ If oversize, how much?_______________ 2. Exhaust Valve Size_______________ If oversize, how much?_______________ C. Shape and Size of Exhaust Ports (give measurements in blanks) 1. ___________ x ____________ Round (Inside Diameter) or Oval (Height x Width) 2. _________________________ Square 3. ___________ x ____________ Rectangular (Height x Width) 4. _________________________ Other Shape (Send tracing of exhaust ports AND bolt holes!) If ports have been enlarged or reshaped, send a tracing of all exhaust ports, all bolt holes, and surrounding machined edges. Put an arrow lettered UP on the tracing so we know which way is UP as on the head! Tracings can be done by taping a piece of paper to the heads exhaust surface and rubbing the bolt holes, port openings, and casting edges with crayon, carbon paper, the SIDE of a pencil lead, etc. Remember that if you are PAYING US to build your headers (or make your header flanges) - sending us a tracing allows us to double check our header flange ports against your exhaust ports to insure best port alignment! (Note that there can be a custom drilling charge assessed IF we must relocate the bolt pattern to better align the ports in the header flange to the ports in your tracing.) D. Maximum Port Flow (if known): Intake ___________cfm @ .___________" lift, Exhaust ___________cfm @ .___________" lift E. Location of Exhaust Ports. Are your exhaust ports AND the related exhaust bolt hole pattern raised from factory location? Yes_______; No_______. If Yes, how much?__________________ (There are cylinder heads that, in comparison to factory production designs, feature raised exhaust port and bolt hole locations. These changes can affect the selection of the header flange design and MUST be noted.) F (V-8 Chevrolets ONLY) Which header flange port shape do you want? Round _______; Square _______; D shaped _______; Select whatever you feel is best _______ G. (Small Block Chevrolets ONLY) Do you have Straight Plug ______; or Angle Plug ______ heads? H. (290-401 AMCs ONLY) Year of cylinder heads and/or shape of exhaust port: 1967-1969 (Rectangular)____________; 1970-1974 (Dog-Leg or L shaped)____________ I. (352-428 FE Fords ONLY) Number of bolt holes on exhaust side of head: 8______; 14______; 16______ (Because there are several different heads in this engine series that have different port sizes AND different port locations - send tracing of ports and bolt holes so we can double check header flange port alignment.) IV. CAMSHAFT A. Factory (horsepower rating) ________ or After market (manufacturers name) ________________________ B. Cam Specs @ .050" lift or _______" lift. Rocker Arm Ratio _______. Factory Rocker Arm Ratio _______. 1. INTAKE: Valve Lift _______________"; Duration _______________o; Opens _______________o BTDC; Closes _______________o ABDC 2. EXHAUST: Valve Lift _______________"; Duration _______________o; Opens _______________o BBDC; Closes _______________o ATDC 3. Overlap _______o; Lobe Separation _______o; Intake Lobe Centerline _______o; Installed at _______o. 4. Lifter Type: Hydraulic ____; Hydraulic Roller ____; Solid ____; Solid Roller ____; Other _____________. 5. MANUFACTURERS DESCRIPTION of Cam Grind (Street, Street/Strip, Competition, Drag, Pulling, etc.) ___________________________________________________________________________________________ Give useful or recommended RPM range) __________________________________ V. FLYWHEEL/FLEXPLATE A. Flywheel Material: Steel____; Aluminum____; Weight_______; Manufacturer_________________________________ B. Small Block Chevrolets ONLY - number of teeth on Flywheel/Flexplate: ______153; ______168. (There are two flywheel/flexplate sizes - 153 tooth and 168 tooth - used with the Small Block Chev engine. This causes the starter to have two different locations. In some cases, to provide necessary clearances, we must build a header to match the starter location - therefore we need to know your flywheel/flexplate size. If you are NOT sure what size you have, count the teeth and indicate that above. For your information, 153 tooth flywheels are found on most engines including STOCK production 64-67 Novas. 168 tooth flywheels tend to be found in earlier cars (55-57 Chevs, early Corvettes, etc.), cars equipped with 11" clutches, or with Powerglide/Turbo 400 automatic transmissions. Flywheel size can also be determined by checking the distance between the starter and the oil pan. If the starter is about 1" or more away from the oil pan - you have the 168 tooth size. If the starter is only about 1/4" away from the oil pan, you have the 153 tooth size. (Distances are relative to using original factory production starters and oil pans.) CHASSIS INFORMATION VI. TRANSMISSION A. 3-Speed ____, 4-Speed ____, 5-Speed ____, 6-Speed ____. Manufacturer/Model___________________________ B. Automatic (model, name of company preparing transmission, converter stall speed) ______________________________________________________________________________________________ C. Transmission Ratios: 1st ________; 2nd ________; 3rd ________; 4th ________; 5th ________; 6th ________. VII. REAR END Type/Model ____________________________________________________________ Gear Ratio ___________ VIII. TIRES Size ________, Width ________, Diameter ________, Manufacturer _________________, Tire Compound _______ MORE USE INFORMATION IX. DRIVING, USAGE, and PERFORMANCE CHARACTERISTICS A. Is mid-range power important to you or your type of usage? _______________ B. When in competition, give low/high limits of engines RPM range ___________________________________ C. Maximum RPMs used in driving/competition _______________ D. Shift points in RPMs: 2nd _________; 3rd _________; 4th _________; 5th _________; 6th _________. E. Drag Racing: RPMs used at starting line: ______________; at finish line ______________ Best Elapsed Time _____________, Best MPH _____________, Best 60 foot Time _____________ Were these Best Times/MPHs turned with the car as described in this Questionnaire? ________________ If not, list changes made since then ________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ Expected BEST Elapsed Time and MPH (this is important) _____________________________________________ MISCELLANEOUS INFORMATION X. OTHER ESSENTIAL INFORMATION A. Type of Fuel (Gasoline, Alcohol, Nitrous Oxide, etc.) ___________________________________ B. Outside Diameter of Exhaust Pipe (between headers and muffler) _________________________ C. (Small Block Chevs ONLY) List the side of the engine that needs brackets for mounting the alternator, generator, or coolant tank. Drivers Side __________ Passengers Side __________ D. (Small Block Chevs ONLY) If your car was originally produced with a manifold mounted generator/alternator bracket, your headers can come with a welded mounting bracket (that the factory bracket bolts to) but indicate here that you DO WANT__________ or DO NOT WANT__________ the bracket. E. (1 7/8" Small Block Chevs ONLY) Do you want us to use the optional Adapter/Reversion Header Flanges (extra cost!) when building your headers? YES__________ or NO__________ F. Power Options (power steering, power brakes, air conditioning) _____________________________________________ G. Are you are still building this vehicle? _______________. If you are attempting to be ready by a certain date, please enter that date here ______________________. H. Driving/racing altitude (height above sea level) __________________ (Well assume under 1,000 feet if left blank.) I. Anything else we should know? Any changes being planned that we should consider? ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ J. Are you using headers now?___________ If so, who made them?________________________________________ What type of header design are they (Collectored, Zoomies, Tri-Ys, etc.)?_________________________________ Please list the dimensions of the headers you are currently using: Lengths must be lengths as measured by you - NOT measurements taken from a listing in a catalog. Zoomies (no collectors): Tube Length____________; Tube OD___________. 4-Tube Equal Length: Tube Length____________; Tube OD___________. 4-Tube NOT Equal Length: Longest Tube _________; Shortest Tube _________; Tube OD _________. Tri-Ys: Primary Tubes: Longest Tube _________; Shortest Tube _________; Tube OD _________. Secondary Tubes: Longest Tube _________; Shortest Tube _________; Tube OD _________. 4-Tube & Tri-Ys: Collector Outlet (OD) ____________; Total Collector Length___________. Other header information _________________________________________________________________________ K. If you have headers on your vehicle now, what do you want the new headers to do? ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ L. We would like to know what caused you to contact us - our website, an advertisement (magazine and specific issue, if possible), a new products release, a magazine article, etc. If you happened to have been referred to us by another person or a business, we would like to know their name. If you know someone already using our headers, if you have used our headers before, or if there was a PARTICULAR reason that prompted your inquiry, please let us know that too! ______________________________________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ |