04 tahoe swap....manifold question

[68chevystepside]

I have an engine out of a 04 Chevy Tahoe i will be installing in my 68 stepside. I noticed the manifold that came with the engine has two holes for sensors? one towards the front and one towards the back. the back hole is for the sensor pressure but i have no idea what the hole on the front top of the manifold is for. I tried looking up the new dorman manifold for the vehicle and it doesn't have any sensor holes on top. can someone explain this. thank you

https://www.oreillyauto.com/detail/d...oe?q=intake+ma

https://imgur.com/qMKRZgj
https://imgur.com/gZklXON
https://imgur.com/L7Z2yNY

[GMC-YA68]

If you look at the mount where your sensor is on the rear....you should have the same thing in that empty hole up front. Looks like someone needed one.

you can sort of see what I'm talking about in this picture.

https://goo.gl/images/J4qCSQ

[68chevystepside]

so best to buy a new manifold. but the new one doesnt have the rear sensor hole. so what happens to that sensor??

[ls1nova71]

Your intake is broken. I have seen that mount break off before. Another truck intake shouldn't be hard to find and are pretty cheap.

[dayj1]

Originally Posted by 68chevystepside

so best to buy a new manifold. but the new one doesnt have the rear sensor hole. so what happens to that sensor??

The MAP sensor is located on the back of the Dorman replacement intake.

Originally Posted by ls1nova71

Your intake is broken. I have seen that mount break off before. Another truck intake shouldn't be hard to find and are pretty cheap.

^^This^^. I think Amazon has the Dorman intake for less than $300, but a used truck intake can be had for next to nothing.

[ls1nova71]

Just saw this, not mine, but may help you out. http://67-72chevytrucks.com/vboard/s...d.php?t=749092