Number one, the Holley is  shorter than a teapot.  Second, using and aftermarket air cleaner also helps.

With a stock teapot and factory air cleaner not much extra room.


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

My '55 TBird has a 1/2" spacer under my Holley carb with no hood clearance issues. I ditched the stock air cleaner. 

Right - about 1/4 inch with a stock air cleaner is about max - otherwise the wing not hits the hood -as me how I found out





54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

If you have a T Bird you have to be careful with hood clearance. Passanger car not so much.

If your needing an additional gasket for insulation I would suggest a fiber or phenolic one. I bought mine off the bay and they have 1/4, 3/8, & 1/2” available. I use 3/8” and use a black felt marker on the edges.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Longer studs usually come with any adapter you might use if you shop around for the appropriate adapter.  Joe-JDC

JDC

You usually can get longer studs at your local hardware store


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Thank you big time Ted 😊

1955 312 T-Bird Warwick, NY

Not difficult.  The original shorter studs can be removed by double nutting them and backing them out.  It would be prudent to cover or block the intake holes with something to prevent the possibility of nuts and/or studs dropping into the intake while making the switch.

Lorena, Texas (South of Waco)

I’d like to increase the length of the intake manifold carburetor mounting studs on my 312 for a thicker gasket. Can this be done?


1955 312 T-Bird Warwick, NY