[tom s]

Pic

[tom s]

Finally got it to post from my IPad!

[tom s]

Guy,IMO your making a big deal out of nothing!How many people except for the 40 or so on this thread have even seen a original?A Zajack repop,a Williams repop?There is a nice Zajack repop for sale on this site for the guys that want a early intake with no counters BORES!The inside of this intake is NOTHING like a original or a Zjack repop either!Tom

[Sirrotica]

Guy,IMO your making a big deal out of nothing!

Reminds me of a saying that my father used to say:

"You'd argue with St Peter, about the way he opened the gates of heaven, before you came in"..............

Have a nice day Y'all...........

[Mike Davis]

No issue with the Counterbores here.

Tom, what type if throttle cable bracket have you used with these that you feel is best?

[JSchmitz]

For the record, I like the counterbored look better. If I were doing a resto look, I'd just make some sleeves. I wasn't trying to be critical or offend anyone. I think this is an AMAZING achievement worthy of inclusion in the Pontiac history books! I just wanting people's criticisms to be technically accurate!

[tom s]

Mike,intakes that were put on engines that were factory installed were painted.Bathtubs were all over the counter so they were what the installer wanted.The Zajack intake on my 63 Lemans is painted engine color.The converted "mule" intake on my 62 GP is raw.When I get a new intake from this batch it will get painted engine color when I swap them out.Im going to keep the "mule" and a 3D printed intake just because for history sake.Tom

[tom s]

Intake pattern

[tom s]

FYI,over the years of having bathtubs on my cars,most people were sure they were aftermarket non pontiac intakes when left unpainted.Painted one pretty much locked up people opinion it was a stock pontiac part.Tom

[61-63]

I called Dimitri Toth last night and asked him about sd intakes and were they delivered bare or painted from the factory. He said all inline dual quad intakes installed on '62 and '63 SD cars left the factory painted as Tom says. Those intakes were installed on their engines during engine assembly and the whole engine including the intake was painted, then all additional hardware (fuel pump, starter, carburetors, etc., etc.) was installed, the engines were hot tested, and were then installed on the chassis or in the car. None of the bathtub intakes left the factory painted however since all were shipped to either the dealer or to the end user (people like Beswick and Thompson) and none were installed on cars at the factory. He said the LeMans and Tempest SD coupes and station wagons left the factory with 9770859 dual quad setups installed on them.

Dimitri told me he would be glad to discuss the bathtubs with anyone and it was OK to put his number on here. He asked that folks not call him later than 8pm eastern time. His number is 586-536-4391.

[JSchmitz]

There's also a special lock washer that can be used with socket head cap screws in counterbores. It's called a high collar washer. It has a small O.D. to match the smaller head diameter. I figured a lot of people might be unaware of these. FYI

[Tim john]

Be aware of the SHCS lock washers used on aluminum for they will "dig" in the aluminum. They are correct as stated above for this type of application but you may want to consider dropping in a small O D. flat washer first so the lock washer bites into that verses the aluminum.

Tim john---

[JSchmitz]

Originally Posted by Tim john

Be aware of the SHCS lock washers used on aluminum for they will "dig" in the aluminum. They are correct as stated above for this type of application but you may want to consider dropping in a small O D. flat washer first so the lock washer bites into that verses the aluminum.

Tim john---

Very true. True anytime you use lock washers. Especially on AL. I never use lock washers without a flat. With the exception of a hitch ball I guess. Lol!

[darbikrash]

Tom and I fit check a pair of carbs on the production casting top today. Base is the billet piece, top is cast.



Cast in clearance on the rear carb for the linkage looks perfect.



Front carb is tight, we put in several gaskets to raise up the carb enough to see how close it is. We'll add a machined relief in the area outlined in the black marker to allow the carbs to fit with just one gasket and no spacers for best hood clearance. My understanding is the factory had spacers under the carbs to address this. This relief and the counterbored SHCS's will allow the carbs to be used without spacers.

[mgarblik]

Details, details, thanks for checking everything and providing just that little bit of extra clearance. I would LOVE to be able to run mine without the hood scoop. We will see.

[61-63]

Factory sets had 3/8" spacers and if a buyer has a choice I'd prefer mine with no notch machined for the front carb.

Great job Tom and John and kudos to both of you as many have already said.

[tom s]

Question is should we leave them all without and let the buyer clearance as necessary.We are going to try the big top carb on it like a Edelbrock,aftermarket Carter etc.It might only just show up with the 4in top factory AFBs.Will know more Monday.Tom

[tom s]

Guys,if you read back thru the posts you will see where I found the carbs with the 5in top are lower than the 4in top carbs.If someone wants to run the factory style 4in carbs AND the factory style Air Cleaners they will NOT fit under the hood of a 62 Catalina.For people that want the open hood deal the options are kind of unlimited.Tom

[tom s]

Guys,a pair of Carter 9635 625 carbs would make a good choice for the intake.They also make 750 CFMs.They are 5in top carbs so are shorter than the 4in top carbs.Also Chevy 409 progressive linkage will work.A/Cs are a issue.Jon’s idea of using the 69TA screens are a good choice.I used a pair of marine flame arrestors but had to cut about a 1/4in off the rear.I might change to the 69 T/A screens.I have run them in the past.Tom

[Mike Davis]

Tom, out of curiosity do know the height vs a Wenzler Original Tunnel Ram?