[b-man]

Originally Posted by Tom Vaught

That is some nice fabricating B-Man.

I would say though that unless the lower lever arm in the rear is about 1.8-2.0 times longer vs the front lower arm you will never get the front carb primaries to open fully. The 1.8-2.0 ratio multiplier gives you some primary movement (about 50%) and will still have all of the primaries to be open at full WOT.

Tom V.

Thanks Tom.

The rear primary carb linkage arm has 2.4" of linear travel measured at the linkage arm attachment hole, the forward secondary carb arm has 1.7" of linear travel at the same point. This way the rear carb primary throttles are opening about 1/3 of the way before the primaries on the front carb start to kick in. Hoping this makes the car easy to drive around town upon light throttle application.

I did some messing around with a few different thin cardboard patterns while I was figuring out the exact geometry I wanted. I put the pivot points in a place where they would have equal travel distance fore and aft from center, and stay on the same plane at the beginning and ending points of their travel to prevent any binding and provide smooth actuation.

Seems to have worked out so far. Both carbs open fully with no problems and pedal effort is very light, much lighter than I expected. After I got it working I was concerned that it might be too stiff, but after heading out to the garage and actuating my '66 Tri-Power a few times I knew it would take less pedal effort than I had anticipated. Kicking in the outer carbs on the Tri-Power always seemed to take quite a bit of effort when I had that setup on my Temepst, there are some fairly stiff springs keeping them shut.

Of course until I get a chance to actually drive the car with the linkage progressing as it does now I won't know if the front carb seems to be kicking in sooner or later than I'd like.

Bart

[b-man]

I would like to dedicate this thread to the memory of Dave Johnson, he passed away this morning.

http://forums.maxperformanceinc.com/...d.php?t=522069

A fine man and a truly dedicated Pontiac racer who clearly went to great trouble and expense to produce this intake that is my new favorite toy.

I originally thought that this rare intake (one of 22 that Dave reproduced in order to make his 'White Warrior' more competitive in his racing class) would make a cool addition to my old GTO, so I bought it even though it was pretty expensive.

Now it holds even more meaning for me, even though I've never met Dave he treated me with respect here on the board in our conversations and that means a lot. This carefully sculpted aluminum casting will always be more than just a super-neat part to me, only someone who was truly dedicated to the Pontiac hobby could have made something like this happen and I'll think of Dave every time I look at it or turn the key to fire it up.

Looking back on his racing endeavors it's clear to me that it would be hard to find a more hard-working and hard-core Pontiac racer and enthusiast than Dave Johnson.

Rest In Peace Dave, you are already missed.

[tom s]

Dave was my inspiration for building my 63 Lemans after 25 years away from the hobby.He sold me my Bathtub,980 heads,Carillo rods and was always eager to help.The bathtub on my 63 now has a DJ ingraved on it and will never leave my collection.Im going out to my garage,put a fresh engine in my 61 Ventura and try not to think about Norwalk without him.Tom

[Skip Fix]

I watched and met Dave at the old NMCA events, since NSS classes to me are what I grew up watching.The fast car was fun to watch,although watching Dave flog a clutch swap in the pits confirmed my switch to auto trannies for racing! Dave would always give good advice freely, not one that kept everything a secret. He will be missed.