Traxxas 4007 TRX Pro .15 W/ PS & Short Crank Hawk - Vintage Nitro Stampede

Short crankshaft fits Nitro Rustler, Nitro Sport, T-Max .15, RC-10GT or Losi GTX This is a Short Crankshaft Version of the Traxxas Pro TRX-15 Engine. It is for modelers who want higher performance than a .12 size engine  in their 1/10 scale kits such as Nitro Stampede, RC-10GT or GTX. This is a Pull Start Version. 

ABC (Aluminum Brass chrome) Construction 
Oversized Machined Aluminum Blue/Silver Anodized Cylinder Head 
Channelled Beam Connecting Rod for Improved Oil Flow 
Precision Ball Bearings 
Large-Bore, High-Flow Carburetor 
Double O-Ring Seals on High and Low Needles 
Industry-Standard Mounts and Crankshaft Lengths to Fit Most Applications. 

One Assembled Engine With Pull Starter 
One Air Cleaner (Black rubber with Black foam element) 
One Full Instruction Book and Parts Exploded View 
One "Traxxas" Decal Sheet 
Installed Glow Plug (standard long no idle bar)

According to Traxxas, this engine will produce 20% more power than the TRX-12, which is approximately 9-11% more power than the OS;CZ-Z. These figures are tested on a dyno (loaded) which provides power curves on a computer. Traxxas was not able to provide any numbers on BHP, bore, stroke etc. Keep in mind that these figures are often useless, as they will vary from engine to engine. And 
there are other variables to consider: the kit, terrain, %nitro;in fuel, etc.

Overall Length (front end of shaft to back of starter): 92mm (3-5/8")
Height (top of cylinder head to bottom of backplate): 93mm (3-5/8") 
Width (cylinder head): 41mm (1-1/2");
Mount holes (center to center): left to right: 31mm (1-1/4") 
front to back: 11mm (7/16");
Overall width of mounting ears (where the holes are): 40mm (1-9/16") Mount the same as an OS .12 and .15 CV;

A 1/10 scale kit to put it into and 5%-20% Glow Fuel.

For the Pro 15 with the Long Crankshaft, use TRAG4009. For the Pro 15 w/Short Crankshaft, W/O Pull Start, use TRAG4004. If you have any other kit, I would call that manufacturer;or call Traxxas directly at 1-888-Traxxas. Traxxas engines run much hotter than "normal" engines (O. S. , ASP,;ThunderTigre, etc. ). Therefore, Traxxas recommends their Top Fuel (TRAP5010) and their glow plug (TRAG3230) to run the engine cooler.