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Discussion Starter #1
This is probably a very stupid question, but as I'm new to this I dare to ask anyway. What is an A-code or C-code or K-code Mustang?? To what does this letter refer to and where do I find it in my VIN ?

Thanks for enlightning me
paddy
 

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C-code is a 2V (2bbl) carb/manifold. A-code is a 4V carb/manifold. K-code is the 4V HIPO engine. These are all 289's.
 

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A-Code refers to the 289 4v engine in 65 and 66 cars
C-Code refers to the 289 2v engine in 65 and 66 cars
D-Code refers to the 289 4v engine in the 64.5 cars (right?)
K-Code refers to the HiPo engine in the 64.5-68 cars
T-Code is the six-banger

Someone correct me if I missed anything.
 

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Well welcome to the VMF, this is a great place for classic mustangers young and old (im only 17). An A-code car is one that has a 289 4V, C-code is a 289 2V and a K-code car is probably the most saught after stang next to a shelby, they had the beefed up 289 4V that put out 271 hp (commonly refered to as the hipo or the 271 hipo). As a side note, all GT's either came with the A-code 289 4V or the K-code 271 hipo. Hope this helps and welcome to the forum!
 

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Current cars include 1969 Mach 1 and 1970 Cougar XR7 convertible
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The engine code is the 5th character in the VIN. For example 7R02Cxxxxxx with the "C" being the 289 2 barrel engine.
 

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Discussion Starter #6
Thanks Kent,

very detailed and precise. Now I finally know what I've got. A '66 convertible with a 289 4v Holley, so that means it's an A-code than. VIN reads : 6R08A202505

Are those wheels you've gor the Thrust D II polished ones???

I'm looking to put some nice wheels on my baby as well. How big or large can I go without major modifications?

thanks a lot
paddy
 

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Should be the 5th digit in your vin. Never fear to ask a question on these forums, everyone is very helpful and will not hesistate to give information/advice. The only stupid question is the one you dont ask. That make any sense? ::
 

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My wheels are the Torque Thrust II, polished aluminum. You can check the size I'm running on my web page, as well as find Jay's list, which should answer your question for you. Just click the picture of my car to go to my site.
 

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Someone correct me if I missed anything.
I couldn't pass up that kind of a lob shot. ::

F code - 260 2V in 64.5 cars and 302 2V in 68-70's
H code - 351W 2V in 69 cars and 351W or 351C 2V in 70's
J code - 302 4V high performance in 68 cars
M code - 351W 4V in 69 and 351C 4V in 70.
Q code - 428 CJ in 69-70 cars and 351CJ in 71-73
R code - 428 SCJ in 69-70 cars
S code - 390 in 67-69 cars
T code - I6 in 69-70 cars
and there's the 429 in 69-70 but I don't remember the code (either X or Z)
 

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don't forget the X-code 390 2bbl pu tin a few late 68(?) mustangs

Here's the thing you want for your tires.
Wheel and Tire Chart thread
 

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Welcome to the forum! Your 'A' in the VIN means 4bbl but your Holley wasn't the first carb on there. Original would have been an Autolite 4100 -- but hey, if it works drive it!! ::
 

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Don't forget the Boss 302-4V = "G" code. ::
 
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