Does anyone know what size torx bolt is holding the intake manifold down? There's only one of them on the passenger side. It's too tight to fit a 3/8" drive down through the middle of the manifold and that's all I have. It appears to be a #40 but I'm not entirely sure.

It's for a 1988 F150 5.0L with EFI.

Thanks for the input.

 

Yup, its a T40.

http://fullsizebronco.com/forum/show...ht=intake+torx

 

Hey, thanks a lot. That will help out enormously. Did you replace it with the same bolt or switch it out to a 1/2" bolt?

I'll be cleaning the manifold while I have it off but is there anything else I should be looking at while it's off?

 

I picked up the #40 torx today that would work with a 1/4" drive and it backed that sucker right out. Thank God it didn't seize up.

Now it's on to cleaning it up.

 

I finished the project today after cleaning up the intake manifold and throttle body. The truck fired right up and the surging idle and stalling issue has disappeared. I knocked out the two freeze plugs at the rear of the manifold and it made cleaning it a lot easier. Thanks to GTrider245 for the #40 confirmation.