How much to rebuild a 65 200 6cyl and C4?

[winstonbike]

I am soon taking possesion of an odd bird, an old MG with the 200 6cyl and C4 out of a 65 mustang. I have been told "It drives great but the rear gears should be replaced because at higher speeds the engine turns to many RPM's. "

I currently own a 66 mustang (289) and a 63 Impala - but admitedly don't know a lot about engines and transmissions.

What does he mean? Does this mean a "rebuild" - what would that run me (approximately).

Also, if anyone in the DC area has a rebuilt 6cyl/transimission they are looking to unload let me know just in case.

Thanks

 

[CarFreakGT]

From that statement, it sounds like he's just recommending that you get lower ratio gears in the rear end. Steeper gears can be better for acceleration and quick launches. However, at highway speeds your engine will turn higher RPM's (e.g. w/ 3.00 gears you may cruise ~1K RPM, but closer to 2K w/ steeper gears).

If you don't own it yet, I would simply drive it when you get it. See what you think about it and make your own decision. EDIT: It may simply be a matter of personal preference based on how you intend to use the car--regular driver vs. racing vs. weekend cruiser vs. ?.

If you decide to go w/ new gears, I would have them installed professionally since you state that you don't know much about the mechanical side. I would say gears and install would run you in the neighborhood of $200-300--depends on what prices are like in your area.

 

[CarFreakGT]

I have been told "It drives great but the rear gears should be replaced because at higher speeds the engine turns to many RPM's. "

What does he mean? Does this mean a "rebuild" - what would that run me (approximately).

I'm sorry, I didn't really completely address the actual question that you asked. Based on that statement, he is not talking about an engine rebuild. Rather, it sounds like he is just suggesting new gears as I mentioned in my other post. <--much cheaper than an engine rebuild. Keeping the RPM's down will contribute to the longevity of the engine.

 

[6T6coupe]

If it's an MGB, the standard rear gear is a 3.909. An MGA would have a similar ratio. Either would have a 200/C4 combo spinning pretty high rpm's at freeeway speeds.

Odd combination...