I have a 1959 low hp car with powerglide. I decided to upgrade to fuel injection for the cool factor and the 20 extra hp. Expensive but fun.

I bought a unit advertised as a 4900 unit - which would be appropriate for a low hp 59. The Rochester label identifies it as a 4900 unit as well. I purchased the correct 915 distributor too.

Upon close visual inspection, the air meter (#7014922) has a faintly stamped "7017301" on it. The fuel meter (#7014781) has a "252" stamped on it.

If I am reading the literature right, the air and fuel meters are wrong for a 4900 unit. The air meter should be on a 59-60 low hp 7300R unit or a high hp 7300 unit. The fuel meter should be on a 59-62 high hp 7250, 7320 or 7355 unit. Do I have this right?

Will this unit work on my low hp 59 with powerglide? I guessing the air meter might be okay since Chevy used this air meter on low hp cars in 59-60. But the fuel meter has me worried - Chevy only used it on high hp cars.

I plan to have a skilled mechanic put this on my car. And if need be, I can send the unit to an expert for calibration.

Thanks for your help.

 

That's the danger of buying a swap meet unit from an unknown source. It may work perfectly well, if all the parts are functioning properly. I would send the unit to Jerry Bramlett for calibration and sorting out if necessary. That way, when you get the unit back you should be able to bolt it on and make it run with a minimum of fuss. Jerry doesn't charge too steep a price for this service and has a pretty quick turn around.

jerrybramlett@comcast.net or his top secret phone # is: (251) 478-4003

 

Great advice, 62fuelie. Thanks.

I sent Jerry a lengthy email last nite explaining the problem. Jerry and I have swapped a number of messages since. Looks like the unit will work fine - I am going to send the unit to Jerry to work out the issues.

Jerry's great.

 

You're in good hands.