A
Anonymous
Guest
I have a 76 granada with 250ci c4 would like more power an better
milage.
milage.
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Anonymous
Guest
First, air up tires to max rated pressure and make sure engine is totally tuned up.
Then,
upgrade to a 2" ID exhaust with a freeflowing muffler.
upgrade to a 2 barrel carb and adapter.
upgrade the cam.
If you need more, get the new aluminum head and hold on.
my .02
Then,
upgrade to a 2" ID exhaust with a freeflowing muffler.
upgrade to a 2 barrel carb and adapter.
upgrade the cam.
If you need more, get the new aluminum head and hold on.
my .02
Howdy Rdm52:
And welcome to the Forum.This will be a great resource to you to gain both better performance and economy from your '76 Granada.
First, know that there are several problems with a '76 Granada with a 250 engine. Some can be addressed and overcome easier thatn others.
The '76 250 suffers from four major inhibitors; 1. low compression and a tall quench height. 2. Too tall, or high gearing in the rear end. 3. Timing gears unique to the 250 that advance cam timing to gain low rpm grunt at the expense of higher rpm performance. 4 An EPA restricted carb and exhaust system.
The pluses are that stock you an excellent air cleaner/intake system. Just make sure that the air cleaner filter is in good shape. You have an excellent stock ignition system. Periodic Replacement of rotor, cap, plugs and plug wires is all that is needed. The '76 250 cam is possibly the best OEM factory cam ever used. The cam timing manipulation through cam gears is unfortunate.
Start by-
*Making sure your car is as light as possible.
*Tires are properly inflated.
*Maximize initial advance setting.
Next, assess what carb you have. It could be a Carter RBS (a good choice) or, a Carter YFA. The YFA is down on cfm compared to the RBS and more encumbered with EPA feedback controls. Next find out what rearend gear ratio your car has. Check the code plate on the frame of the driver's door and report here for help decoding. Most likely it will be in the 2.79:1 range- possibly higher. Replacing your 7.5 or 8.8 rearend with a 3.00:1 would help performance and possibly imporve mpg.
Dealing with the cam timing and the quench height and CR is part of a short block rebuild and is not easily or economically accomplished.
Ratter's suggestion of a good, free flowing 2" exhaust system is a great one- regardless of wht else you might do.
Enjoy the trip.
Adios, David
Adios, David
And welcome to the Forum.This will be a great resource to you to gain both better performance and economy from your '76 Granada.
First, know that there are several problems with a '76 Granada with a 250 engine. Some can be addressed and overcome easier thatn others.
The '76 250 suffers from four major inhibitors; 1. low compression and a tall quench height. 2. Too tall, or high gearing in the rear end. 3. Timing gears unique to the 250 that advance cam timing to gain low rpm grunt at the expense of higher rpm performance. 4 An EPA restricted carb and exhaust system.
The pluses are that stock you an excellent air cleaner/intake system. Just make sure that the air cleaner filter is in good shape. You have an excellent stock ignition system. Periodic Replacement of rotor, cap, plugs and plug wires is all that is needed. The '76 250 cam is possibly the best OEM factory cam ever used. The cam timing manipulation through cam gears is unfortunate.
Start by-
*Making sure your car is as light as possible.
*Tires are properly inflated.
*Maximize initial advance setting.
Next, assess what carb you have. It could be a Carter RBS (a good choice) or, a Carter YFA. The YFA is down on cfm compared to the RBS and more encumbered with EPA feedback controls. Next find out what rearend gear ratio your car has. Check the code plate on the frame of the driver's door and report here for help decoding. Most likely it will be in the 2.79:1 range- possibly higher. Replacing your 7.5 or 8.8 rearend with a 3.00:1 would help performance and possibly imporve mpg.
Dealing with the cam timing and the quench height and CR is part of a short block rebuild and is not easily or economically accomplished.
Ratter's suggestion of a good, free flowing 2" exhaust system is a great one- regardless of wht else you might do.
Enjoy the trip.
Adios, David
Adios, David
A
Anonymous
Guest
When I tell people I bought a 75 Granada to use as a doner for the 61 Comet. All they hear is "I bought a 75 Granada", then they get this god awful look on there face like they just smelled something foul.
A
Anonymous
Guest
"CZLN6" wrote
My car needs one.
2. 36psi
3. I think I have done it properly.
(my other Zephyr had a 2.73):deadhorse:
I will remember that when I go to pull-a-part.
My car needs one.Sounds like an inexpensive upgrade for my 200? David?
1. Remove 60 lbs. of toolbox and stuff... :roll:
2. 36psi
3. I think I have done it properly.
7.5" w/ 3.08 gears.
(my other Zephyr had a 2.73):deadhorse: One out of four suggestions correct is better than 0.
Second time for me and glad to be back!
