a 25 I think will check

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Regards,
Fanie Gerber
It's never junk, it's just a part you're not currently using

http://www.valiant50.co.za
Just say I own a few Mopars

Just adding a bit more info to this thread.

I'm using a 600 Vac Sec Holley temporarily while I have my 390 repaired. Yes I broke the number 1 rule, "never over tighten....anything" I cracked the base plate through the PCV port.
Anyway, this 600 I'm using is a standard setup, 25 shooter, 66 primary jets, 64 secondary jets and 65PV. Now believe it or not, but I'm getting surging at cruising speed, and there's a massive bog off idle. Interesting that if my little Slant was to use a 600 Holley full time I'd need to jet it up and put in a bigger shooter. Unfortunately I can't try this out as it's a loaner carb and I promised I wouldn't pull it appart.

Another bit of info for you which you may or may not find interesting. I ran my car down the track last week with the 390, before I broke it. I got there late, and in a hurry to get to the staging lanes I forgot to swap the purple secondary spring(which I use on the street) for the short yellow spring(which I use at the track). After my first dissapointing run and wondering what was wrong I realized I hadn't swapped springs. So a quick spring change and what a difference!!
The up shot from all this is I got some real world figures on how much difference it makes having the secondarys open earlier.

1/4 mile with purple spring 16.04 @ 86mph

1/4 mile with short yellow spring 15.73 @ 88mph

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62 Valiant, 225cid Slant 6/PB 904 with lots of good bits

http://www.moparmarket.com/readersrides ... user=SV162

Got my 390 back all fixed up and had a play with it on the weekend. Put in some 53 jets which caused surging at cruise and a huge bog off idle, so I put in some 55's which didn't surge at cruise but still had the off idle bog although not as big as the bog with 53's. So I swapped the 25 shooter for a 28 and the bog is totally gone. Stomp it at any speed and it just goes.
If I get on the throttle just slightly under load there's just a barely noticable surge which goes if I give just a bit more throttle so I might change the power valve from the 4.5 to a 6.5 and see what happens.
So to answer my own questionYes, yes you can

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62 Valiant, 225cid Slant 6/PB 904 with lots of good bits

http://www.moparmarket.com/readersrides ... user=SV162

Another update for those following.
I'm still running with the 55 jets and all is well. I swapped the 45 PV for a 65 PV and that has improved things. I did some driving around with a vac gauge hooked up and I think ideally an 85 PV would be better because my vacuum at cruise is around 15 to 16"Hg, but my vac at idle in gear is around 8 to 9" so the 85 PV would be opening at idle........not good.
I think I've finally got this carb dialed in...........well almost

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62 Valiant, 225cid Slant 6/PB 904 with lots of good bits

http://www.moparmarket.com/readersrides ... user=SV162