[Singleton]

Really interested in this for my 70 Formula, but looking at the pics of the finished engine, I have doubts that it would fit under the hood. The 70-75 Formula twin snorkel hood has probably the least clearance of any Pontiac vehicle, even less than the T/A. If you have time, could you take measurements of the height/width based on various common points of the engine?, i.e. measurement points that are common to all blocks.

[darbikrash]

Originally Posted by Singleton

Really interested in this for my 70 Formula, but looking at the pics of the finished engine, I have doubts that it would fit under the hood. The 70-75 Formula twin snorkel hood has probably the least clearance of any Pontiac vehicle, even less than the T/A. If you have time, could you take measurements of the height/width based on various common points of the engine?, i.e. measurement points that are common to all blocks.

At the rear, it is 13.25" from the block casting where the distributor mounts to the highest point of the blower lid. This is ~ 1" lower than the factory air cleaner on a 1st gen firebird.

The front is 11.25" from the center line of the two top water pump bolts to the highest point of the blower lid.

[Singleton]

Originally Posted by darbikrash

At the rear, it is 13.25" from the block casting where the distributor mounts to the highest point of the blower lid. This is ~ 1" lower than the factory air cleaner on a 1st gen firebird.

The front is 11.25" from the center line of the two top water pump bolts to the highest point of the blower lid.

Unfortunately I think it may be a problem getting this to fit a 2nd gen bird. The way the nose slopes down at the front leaves little room.
On my 70 Formula, with the stock 1 1/2” drop base air cleaner, I measure 8.25” from centerline of upper water pump bolts to the top of the air cleaner.
Using wadded aluminum foil on top and closing the hood, I measure about 9.0” max clearance from water pump bolts.

*edit. That 11.25” measurement seems really high. Are you 100% on that?

[darbikrash]

Originally Posted by Singleton

Unfortunately I think it may be a problem getting this to fit a 2nd gen bird. The way the nose slopes down at the front leaves little room.
On my 70 Formula, with the stock 1 1/2” drop base air cleaner, I measure 8.25” from centerline of upper water pump bolts to the top of the air cleaner.
Using wadded aluminum foil on top and closing the hood, I measure about 9.0” max clearance from water pump bolts.

*edit. That 11.25” measurement seems really high. Are you 100% on that?

You're right, those numbers are not from the top water pump holes. I measured it this morning from the two top holes to the supercharger lid, and I measure 8.5".

I'll take some pictures when I can get somebody to hold the camera while I take the measurements.

So it seems like this will fit a 2nd Gen firebird but we do want to check carefully. When we get the production castings, I will send a full size machined mock up to whoever does the first 2nd Gen bird, we can confirm hood clearance with this.