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  #61  
Old 04-22-2013, 07:24 PM
tommy cruise tommy cruise is offline
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Default 391???

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Originally Posted by jopizz View Post
My guess is that it's a 391 which had a compression ration of 8:1.

John
If so then the dizzy shaft will be larger. I'm going to have to check because I was going to purchase a new dizzy. I believe on the bottom a reg 390 has a 1.38 and a 391 1.76 i'll have to research those #'s though. Tommy"
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  #62  
Old 04-22-2013, 09:02 PM
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Default 59 t-bird

Hi All, the more I read about the 391 the less I feel I have one. The 391 is a bit of an oddball. I have the original intake on the engine and also the timing cover is my original the dizzy doesn't have a governor on it and my heads don't have cross over in them. I think it's a fe 390 out of a truck, a light truck engine, who knows what they put into it when they rebuilt it. I spoke with Dave the other night and he said when they rebuild they pretty much toss the pistons, so i'll take compression and just to see what it reads, as for the engine it runs very nice so i'm just going to enjoy it and work on other things that need some attention. Thanks for the help and I will post compression #'s when I get them in several wks. Tommy"
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  #63  
Old 04-22-2013, 09:28 PM
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Even though the FT (330,361,391) and FE (352,360,390) blocks are pretty much identical and the components will interchange you are correct about the 390 being much more common. There were obviously more light trucks built than heavy duty trucks.

John
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  #64  
Old 04-22-2013, 09:40 PM
tommy cruise tommy cruise is offline
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Default 59 t-bird

Quote:
Originally Posted by jopizz View Post
Even though the FT (330,361,391) and FE (352,360,390) blocks are pretty much identical and the components will interchange you are correct about the 390 being much more common. There were obviously more light trucks built than heavy duty trucks.

John
John i don't know why i'm so obsessed about it. I just like to know what I have but I do know it's a 390 an runs good so unless I find out more I am going to try and enjoy it through the summer. Thanks Tommy"
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  #65  
Old 04-22-2013, 09:56 PM
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With the original intake and valve covers only an expert will know it's not the original motor.

John
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  #66  
Old 04-22-2013, 11:25 PM
tommy cruise tommy cruise is offline
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Default 59 t-bird

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Originally Posted by jopizz View Post
With the original intake and valve covers only an expert will know it's not the original motor.

John
That's exactly how i'm thinking. Lol" Thanks John
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  #67  
Old 05-24-2013, 05:31 PM
tommy cruise tommy cruise is offline
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Default 59 t-bird

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Originally Posted by YellowRose View Post
Tommy, when you get a chance get a better measurement on that center case section of the tranny. A Large case measures 10 7/8" for a 1958-1960 Tranny. A 1961-1965 Large case tranny measures 11.6". Hopefully, someone will be able to tell you which tranny you have from the numbers. If it is a 430 tranny, the tag on the drivers side should have said 430 on the left side of the tag and the number on the right side.
Hi Ray, the tranny case is 10-7/8". I took compression turning slow only about 5 revs per cyl. and it held 155 Lb. across the board. !8" of vacume @ idle and when I removed valve covers everything was new. I think the #'s are good runs good , but slips like hell from 1st - 2nd anyone have any ideas it did sit for 9yrs. Thanks Tommy"
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  #68  
Old 05-27-2013, 04:25 PM
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IF you can find the correct trans filter, you might try changing it and going back with a bottle of Sea Foam brand transmission conditioner (with new fluid).

It's a free try for a few miles....
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  #69  
Old 05-27-2013, 08:12 PM
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Default tranny slip

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Originally Posted by tbird430 View Post
IF you can find the correct trans filter, you might try changing it and going back with a bottle of Sea Foam brand transmission conditioner (with new fluid).

It's a free try for a few miles....
Hi 430,i had heard about the sea foam but wasn't familiar with it. Should I leave old fluid drop pan change filter and add foam. I was thinking of putting 50-100 miles on it and what do you think about having it flushed and new fluid. Also do you think I should mess with the bands or just leave them for a tranny man. Thanks Tommy"
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  #70  
Old 05-28-2013, 12:12 PM
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The trans filter is metal so you just have to clean it. Most likely you have a lot of sludge after sitting that long. When I first took my trans apart after years of sitting the pan, filter and everything else was filled solid with sludge.

John
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