2009 Rules
                       Here is the proven RaceSaver® plan:

Engine Rules:

1: Blocks, GM 305 V-8s w/ approved casting #’s 361979 460776 460777 460778 14010201 14010202 14010203 14088551 14016381 355909
2: NO ballast weight can be added to a car using a lightened block.
3: Max C.I. 315.9 No Tolerance. Stroke 3.480 + - .020. Max. bore 3.801 Do the math!
4: Flat top pistons with valve relief's.  Cannot protrude from cylinder bore.
5: Crank, iron or steel, min. weight 48 lbs. 1% tolerance, min. main brg. dia. 2.450 -.030. NO weight added to crank except balance metal, which must be welded in place.
6: 5.7” steel rods, min. rod journal dia.  2.100 -.030. Pan may be removed for inspection.
7: Cam drive: Chain only. No gear or belt drives. No device to vary running cam timing.
8: Plain hub or SFI approved damper. Stock location water pump.
9: Stock (.842) dia. flat tappets. NO roller, hydraulic, mushroom or radius tappets.
10: Cam: original material, configuration & firing order (18436572) No billet or hardened cams.
11: Springs: Straight wound w/ flat damper. Max. pressure: @ seat 120#, @ .500 lift 355#,  RACESAVER® spring: Max dia.1.265”, max. wire dia..195, Max.free ht.  2.120,  5 full coils min. Aftermarket spring: Max dia.1.270”, max. wire dia..191, Max.free ht. 2.165,  5 1/2 coil min. 
12: Wet sump, internal pump only, no crankcase vacuum systems.
13: Roller rockers allowed. 3/8” stud mount rockers only. NO shaft systems.
14: Absolute max. valve lift: (.510” int., .535” exh.) measured @ zero lash @ valve retainer.
15: No girdles, rev kits, or valve train stabilizers. Tappet access for inspection required.
16: No repositioning, boring or bushing of cam or lifter bores. Max cam dia.1.869 + .002
17: Valves: Int. 1.94”, exh. 1.60”, Stem 11/32”, orig. length & weight, No altered or hollow stems.
18: Ferrous material only: Valves, Retainers, Keepers, Push rods, Springs, Tappets, Cam & cam drives, Crank, Rods, Wrist pins, Fasteners, Main Caps, No titanium or ceramics in engine.
19: Point type Magnetos, or Kettering style ignition. Constant flow fuel injection only.
20: 100 lb. wt. penalty for use of any electronic components, incl: ignition, ECU’s or driver aids.
21: RACESAVER® 305 SPEC head: Absolutely NO changes. NO machining, milling, resurfacing, grinding, polishing, welding, acid or caustic work, shot peening, glass beading, coating, or any other process that will alter the machined surfaces or the natural sand cast finish. Must retain all original dimensions & configurations including; Valves, springs, retainers, stems, & guides. The ONLY work allowed is: Reseating the valves. NO top cuts that extend into the aluminum of the chamber. NO, under the seat relief cuts. NO work that enlarges the as delivered throat size, 1.810 Int. & 1.345 Ex. (+ or - .010). NO bowl changes. NO CHANGES! Every dimension of these heads has a gauge dimension that must be met for them to be certified. Change any one of them and you will be disqualified. The stamped identification marks may not be altered.
22: Compression Ratio: 10.25 to 1 absolute maximum. C.R. checked w/ Whistle, or by pouring the assembled cylinder. Absolute minimum assembled cylinder volume: 70 cc. Heads may NOT be milled !!! Only exception is pre- approved milling to repair surface. All repairs MUST be pre- approved. Contact  RACESAVER® @ 540-923-4541 before attempting repairs. A repair authorization number will be issued. After repair, heads must be recertified and marked accordingly. Original serial numbers and certification marks must be intact. They may not be altered or obscured. Any & all repairs MUST be pre-approved and heads recertified. If any
spec head is found to be modified; it must be REPLACED with a certified spec head.

23: The spirit and intent of the   RACESAVER® 305 SPEC Engine Rules will prevail.

Any attempt to circumvent the rules may result in confiscation of suspect parts, and other significant penalties. We reserve the right to exchange any Spec Head at any time. If heads are illegal, NO exchange will be made. Illegal heads will be removed from legal head registry.