how do you know which castings are best to use

[Wicked45]

New to the the forum  i have  a 17058213  that i was going to   rebuild  for a friends dirt car  was wondering  if this body is good  or bad ?   I ordered Cliff book just can wait for it.    Thanks in advance all,the posts I have read are great.

[carmantx]

Welcome to the group.
That's interesting, because I pulled a 17058213 apart today to build for a customer.  It is a single MAB carb and APT in base which is not my favorite design, but certainly very functional.
As far as best design, it all depends on engine set up and tuning desire.

[Wicked45]

do you  you take out the apt in the base  what the  best way to adjust it?

[Ethan1]

do you  you take out the apt in the base  what the  best way to adjust it?

 Welcome to CHP!

 Not my favorite design either. Also, I believe on that one, you have to drill out the plug to get to the APT screw. Another reason I do not like that design.

 What are you building it for?

[Wicked45]

Sorry I have been  busy  we build it for 350  30 over    flat top   410 lift camshaft    with  487 cylinder  head  the reason I was plan on using this body  because  i 3 of them and  clean in good shape  as cores  plus  I don't  want to have to much carburetor       

[carmantx]

Cliff has an externally adjustable screw for the APT in baseplate.  It works well.  Most originals are very difficult to remove.

[Cliff Ruggles]

The 17058213 is excellent.  It's one of the first single main airbleed designs. 

I would get one of our kits for it and custom tuning parts.  We will include the high flow N/S assembly and HP accl pump for the racing application.   It would basically be "plug and play"......Cliff

[Wicked45]

my apt  in the base is frozen  will   not  turn   what the  best way to fix  or  just  drill  it  out and   dont worry about it ?

[Ethan1]

my apt  in the base is frozen  will   not  turn   what the  best way to fix  or  just  drill  it  out and   dont worry about it ?

 Have you tried heat? I wouldn't drill it out. No fun. I really hate that style baseplate.

[Wicked45]

  Yes I  heated  it  up and  frozen   I  was looking at a few others I have the marine   base  plates dont have that adjustment   would it be  easy just to switch the  base  plate out   and not have it ??