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October 12, 2017 2:58 pm  #1


My first restoration

A barn find that was originally from South Carolina. 64 galaxie 390 fastback. I have been looking for this exact car for 15 years. Still haven't decided what cam I want to run in it. I'm going to rebuild with 10:1 compression bored out .030 over. I want it to be a tourquer motor not a high RPM motor no more than 5k as I plan on driving it frequently. Any suggestions are appreciated.


64 Galaxie Fastback 390 4bbl
 

October 16, 2017 4:04 pm  #2


Re: My first restoration

No one has suggestions for a torquer cam.


64 Galaxie Fastback 390 4bbl
     Thread Starter
 

October 16, 2017 4:06 pm  #3


Re: My first restoration


64 Galaxie Fastback 390 4bbl
     Thread Starter
 

October 16, 2017 9:02 pm  #4


Re: My first restoration

Congrats on your acquistion.  Automatic?  Toploader?  Tremec?  Rear end ratio?  stock heads or aftermarket?  What if the engine is already at .030 over?   When my 390 was rebuilt in the early 70s, with stock components and .010 over, it topped out at 5,000 RPM  100,000+ miles later, I don't push it past 4,000 but it still cruises without complaint at 80 MPH (3.00 differential)..
FWIW, Comp Cams would likely recommend something in the first set of options here:  I have the dual energy 265DEH in my 289 Mustang, is well behaved but will out pull most 4 Barrel windsor-based motors.

Kevin
 

Last edited by pkevins (October 16, 2017 9:05 pm)


Kevin
63 Galaxie 500 Sport Hardtop (aka fastback), z-code, 4 speed, Rangoon Red, White roof, black interior
Was with my dad and brother when he took delivery 30 July 1963
 
 

October 18, 2017 9:21 pm  #5


Re: My first restoration

Sorry for not getting back to you earlier, been busy. I haven't decided the transmission yet. still a toss up between auto C6 or a toploaded. The motor is already torn down and shows only about .004" out of round. It came with a cruis-o-matic, but some one put a C6 in it. Would like to make it original equipment but not sure or c-o-m can handle the power. therefore why not put in a 4speed top loader in, But i currently have C6 and can save money by using it. It has a 3.00 differential, so cruising long haul should be easy.


64 Galaxie Fastback 390 4bbl
     Thread Starter
 

October 25, 2017 3:25 pm  #6


Re: My first restoration

The dual energy 265 is a good mild cam. I went over the these series. Got a xe 256 in my 289 and gained everywhere over the high energy 268.

 

October 25, 2017 5:30 pm  #7


Re: My first restoration

Thank you for the info. So you like the XE 256 better. very helpful.


64 Galaxie Fastback 390 4bbl
     Thread Starter
 

October 26, 2017 11:09 am  #8


Re: My first restoration

They are both terrific cams. The comp XE line has faster opening and closing rates so you get more power within the chosen rpm range.  That DEH 265 is no slouch though. Either one would work great in a big car, and you could probably go hotter yet with your big block an XE 262 in your 390 is going to idle pretty tame compared to my little 289.

Actually what behaves more radically in my small block is going to be more like an RV cam in your 390. You could probably get by with something like a 268xe and still have good vacuum, and a broad torque curve. The xe line is a little different than the older school grinds in that they actually build cylinder pressure, so your dynamic ratio will be a little higher which will help with with grunt. With 10:1 compression and too short of a duration cam, you could run into detonation issues so you may want to go bigger on the cam to bleed off some compression, or lower compression to work better with a smaller more torque oriented cam.

A car with lower compression and a good performance ignition curve will be quicker than a car with higher compression that has retarded timing to run on today's crappy gas.

I hope I'm not coming across as a smart aleck. I am trying to help you learn from some of my mistakes. Trust me when I say that I have made more than my share .

Last edited by guitar74 (October 26, 2017 2:54 pm)

 

October 26, 2017 2:17 pm  #9


Re: My first restoration

Guitar have you tried using comp cams Camquest tool? If you or anyone else has how accurate/relative was it to the actual set up.


64 Galaxie Fastback 390 4bbl
     Thread Starter
 

October 26, 2017 2:58 pm  #10


Re: My first restoration

I have. The suggestions are pretty good. I don't think that the power numbers are realistic, but they aren't as exaggerated as some dyno programs. Also, the converter suggestions are spot on.

 

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