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-   -   68 302 4 barrel after market carb (http://mustangforums.com/forum/classic-mustangs-tech/666401-68-302-4-barrel-after-market-carb.html)

danhiman 03-08-2012 09:31 PM

68 302 4 barrel after market carb
 
My Dad had a heart attack and I am now trying to help get his Mustang in order. Some time ago he had someone, he can't remember, change his carb. When I got it, it Idled super hi in park/neutral, and hi in drive, clunking bad when shifted. His tranny leaks bad, seems to be tore up. The car on the road is a beast, I connected the vacuum lines, tuned down the carb as much as possible, but I can't control the idle to a reasonable idle. I have a feeling the carb is to big for the car, help. I use to work on carbuatored cars in HS, so Its be awhile. http://www.flickr.com/photos/5218707...in/photostream
[IMG][IMG][IMG]

http://www.flickr.com/photos/5218707...n/photostream/[/IMG]http://www.flickr.com/photos/52187078@N02/6965785509/in/photostream/[/IMG][/IMG]

oxfordbp 03-08-2012 09:39 PM

What size carb is it? If you can get a part number we can find out. Also check the timing and look for vacuum leaks.

Sorry to hear about your Dad!

The_Dude 03-08-2012 10:13 PM

Looks like it's this carburetor, which should be fine if properly tuned.
http://www.holley.com/0-80570.asp

oxfordbp 03-08-2012 10:22 PM

If it is that 570 cfm then its right on for your 302. However being a holley cant you change the internals to get more cfm? If someone has, how can you tell?

danhiman 03-08-2012 10:23 PM

I tried to post pics, heres a link
http://www.flickr.com/photos/52187078@N02/6965785509/
http://www.flickr.com/photos/5218707...n/photostream/
http://www.flickr.com/photos/5218707...n/photostream/
http://www.flickr.com/photos/5218707...n/photostream/

The_Dude 03-08-2012 10:27 PM

I did see your pictures and looked up the list number. It's a 570 which should be perfect for a 302.

danhiman 03-08-2012 10:38 PM

I read some where that 1.8 per litre only applies to modified engines. My brother did say that he remembers Dad telling him you can't time it to factory for some reason. He had a stoke as well a Quad by-pass. There really isn't alot of vacuum lines, I did check them, found no leaks, but the timing? I see the 80570 part # on the front. The tranny does not have OD. Is the Trans Linkage hardware required?

danhiman 03-08-2012 10:40 PM

I have to admit, it hauls butt, Just the idle and going into gear is not so good. I'm thinking it will need a new tranny and if so maybe an OD would be nice.

oxfordbp 03-08-2012 10:54 PM

Why wont it time? there may be another hidden issue there.

I was wrong about vacuum. If it was a leak it wouldnt idle very well and would pop and sputter.

I still think carb adjustment or timing.

danhiman 03-08-2012 10:57 PM

I'll have to check the timing this weekend.


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