mustang 5.0 carb bolt pattern doesn't match intake?

93 LX · Mar 15, 2009

Looking at your picture i am thinking you are using the wrong set of holes. You can plainly see from the pic that the person before you used the inner hole on that side of the carb. Your carb will both to square and spread bore mainfolds. If you could privide a pic that show all the mounting holes maybe we can figure this out for you. Anyway its something to try...

twin_turbo_mk3 · Mar 17, 2009

iapexl8r said:
are all four butterfly valves on the carb the same size? if they are not you have a spread bore carb.. and need a square bore carb.

ya i think thats the problem. there is no way to adap a spread bore carb to the intake? i saw the adapter thing but its useless if i cant get it to bolt up.

ANd are the sqaure bore and spread bore bolt pattern different?

twin_turbo_mk3 · Mar 17, 2009

btw can i use a spread bore carb with a square bore intake without an adapter? im thinking of just modifying the bolt holes on the carb

93 LX · Mar 17, 2009

twin_turbo_mk3 said:
btw can i use a spread bore carb with a square bore intake without an adapter? im thinking of just modifying the bolt holes on the carb

no. The secondarys are wider than the square bore flange...

twin_turbo_mk3 · Mar 17, 2009

93 LX said:
no. The secondarys are wider than the square bore flange...

so i take it that spread bore pattern is different from the sqaure bore pattern?

iapexl8r · Mar 18, 2009

yes the bolt patterns are different. some manifolds come with both sets, square and spread. if you modify the intake be sure to set the carb on the intake and try to open the butterfly valves to be sure they dont hit the manifold.

twin_turbo_mk3 · Mar 18, 2009

iapexl8r said:
yes the bolt patterns are different. some manifolds come with both sets, square and spread. if you modify the intake be sure to set the carb on the intake and try to open the butterfly valves to be sure they dont hit the manifold.

I seem to get two answer to the question.

1 say i can use it and the other say i cant.

anyways so if everything clears will it be fine? im a bit worried that maybe its not align properly.

93 LX · Mar 18, 2009

Dude try another carb... See if your buddys have a holley and see if they line up.

you can not run a carb with 3 bolts installed.

You will have a huge vaccum leak.

mustang 5.0 carb bolt pattern doesn't match intake?

93 LX

twin_turbo_mk3

New Member

twin_turbo_mk3

New Member

93 LX

twin_turbo_mk3

New Member

iapexl8r

Member

twin_turbo_mk3

New Member

93 LX

Similar threads

mustang 5.0 carb bolt pattern doesn't match intake?

New Member

New Member

New Member

Member

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency