Recent content by Dr. Frankenbuick

I used to love my 340, but not that much.

Non AC were not generally full shrouds. Some only had a top. I think you need 66 or 67 non GS (300 or 340) AC shroud.

Shrouds were different depending on if they were Nailheads, big block 400 or small block Buicks in the A-body. 300, 340 and 350 all bolt in the same position. You want a small block shroud from 65 through 67.

350 uses a 5 bolt valve cover and the 340 uses a 4 bolt valve cover

Hello to you as well. Fire away with questions.

That should be a fun driver. Lots of grunt with those gears.

Welcome mn79!

I think that is an aftermarket trim tag. Baltimore does not use BMD. They use Bal. The trim code 198 is black vinyl buckets. A51 would not be needed. The rest appear to be GM RPO codes, but the 66 Buick trim plate did not use RPO codes. It used groups and letters related to options in the...

The 336 rear was standard for a 67 GS with manual transmission. I wonder if someone swapped the entire manual 67 GS drivetrain into your 66. Looking at your POP again for 163 NN. 163 is code for a split front bench seat in fawn (brownish white) and NN is the upper and lower body colors both...

https://www.taperformance.com/proddetail.asp?prod=TA%5F691

Jack up the rear and see if both tires turn the same way when you turn one = posi. Count the drive shaft revolutions for one tire revolution for the rear ratio. Double the amount of driveshaft turns to one tire revolution if non posi or just count the number of driveshaft turns to two non posi...

The bolt pattern on the valve covers says Big Block Buick, but the valve covers dont seem right. There should be a flat spot for the decal. Check the back of the block where it meets the transmission. The displacement should be there. Your POP supports that it is a 66 GS with a 400 Nailhead and...

Piston stop

I use .050” before and after max lift continuing in a clockwise motion to determine the lobe centers. But, TDC has to be right on the wheel for it to mean anything. I use a positive stop made out of a spark plug with a headless bolt screwed in to determine TDC. Carefully turn it one way and...

Ok, in that case you are 6* advanced, but your card wants. 4*. Two degrees off is not going to make a huge difference in performance or rpm range. I would change it, and probably dial it in at 2* advance just to see if it makes it happier. Do you know why Mike wanted it at 0 advance?