18436572 counter clockwise
All GTX's produced had the 440 engine.
look on the passenger side on the side of the engine block .
about 1,800 RPM.
GTX comes with a hemi standard. Roadrunner does not. Actually the standard engine for the GTX was the 440-4bbl, the 426 HEMI was an option, throughout it's entire production run as a stand-alone model from 67-71'. The 440 6bbl was also available as an option in 70-71'. The GTX was considered the "Gentleman's muscle car" as it had a higher trim level and price tag. The Road Runner in those years was initially a bare-bones/big motor version of the GTX, 383HP being the standard engine in 68', the 426 Hemi and, from 69 1/2', the 440 6bbl were optional up until 71'. It was marketed toward a younger crowd. For 72-74', with the GTX discontinued as a stand-model, Road Runners ordered with the optional 440HP engine were called a "Road Runner GTX".
The GTX came with a 440 CID 4bbl. 375 HP V-8. Only option was a 426 CID Hemi V-8 of 425 HP.
They never made a road runner GTX, it's either a road runner or it's a GTX. That's a GTX
with the 440 or the hemi they were quick for the day.
That all depends on the rear gearing. fast 440 375hp
You should be able to tell by your vin # on the dash and the stamping on the block on the engine passenger side by the freeze plugs, the year should match.
its an original west Seattle car the make is a 1967 gtx maroon red with white interior it has a four speed it was a 440 but my dad put a 426 max wedge in it not sure when he sold it but im trying to find it
Through 1971, the Plymouth Road Runner and GTX were separate models. Traditionally the VIN of the Road Runner started with RM23, and the GTX started with RS23. The base Road Runner came standard with a 383ci engine and a minimum of options. The GTX came standard with the 440ci engine, and was appointed with several standard options. The Road Runner was the cheap muscle car, and the GTX was the luxury muscle car. This changed in 1972 as the GTX was dropped as a stand alone model and the 400ci engine became standard for the Road Runner. If you ordered a Road Runner with the one of two 440ci engine options that year, the model became a Road Runner GTX, included additional badging as such. There were 672 Road Runner GTXs produced in 1972. 219 were 4spd manuals, and 453 were automatics. In 1973 and 74, the 318ci engine became standard in the Road Runner. Again, if you ordered the 440ci engine, your Road Runner became a Road Runner GTX. In 1973, 749 Road Runner GTXs were produced. And in 1974, 386 Road Runner GTXs were produced. All 1973/74s were automatics. So the final answer is: There were 1,807 Road Runner GTXs produced from 1972 through 1974. The model name for all "U" and "V" engine coded '72-74 RM23/RM21s is "Road Runner GTX". This official model name change is as described by existing Chrysler documentation; "Road Runner will become a Road Runner GTX when it is ordered with either the 440 4-barrel or 440 6-barrel optional engines"
basically it had a heavier duty suspension and bigger brakes and the 440 engine with dual exhaust, it was an upscale satellite with better interior and more ginger bread on the outside of the car.