[66 Gas Tires Oil]

I am contemplating installing an original 66 Tri-Power set-up in my 66 GTO with a 455. It has 1969 #48 heads i already have the timing cover with the large dimple. besides the water neck and upper radiator hose changes what other changes do I need to do? I read a HEI does not fit. what type current distributors fit. I see original distributors with pertronix #III installed; do they also need some type of coil installed elswhere?

Jim

[Kenth]

Nothing wrong using the original points distributor, all Tripower, RamAir and SuperDuty engines used them and they did good.

Using 1969 and later timing cover with Tripower requires some trimming rear of upper coolant pump screw hole.

[ahnuld]

With the petronix and external coil is what i did, i'm putting spacers under carbs and blocking off my exhaust crossover next, put my tri power on 2 years ago and haven't touched it since. Dan

[66 Gas Tires Oil]

what type of coil is it? Where did you mount it? I seen them spacers what are they for more clearance or performance gains?

Jim

[b-man]

Use a '65-'67 valley pan.

[Doug]

I seem to recall that there is a "small" HEI distributor that will work. Maybe you can do some research about this.

[b-man]

The small-body HEI is a custom conversion using a points distributor and a Ford module.

[ahnuld]

mine is right beside coil, petronix coil and wires(plain black no writing) and electronic conversion, just make sure you shim distributor perfectly. I'm getting boiling fuel in center carb so i'm buying those 1/4" Phenolic insulators from pontiac tri power, i'm hard on the car more than nice to it. Dan
[IMG][/IMG]

[Kenth]

Since this is the Street section i do not recommend blocking the intake exhaust crossover, driveability and economy will suffer.
And if shimming distributor endplay (up&down) make sure you don´t go to far binding the oil pump drive shaft causing glitter in oil.
Factory .040"-.060" endplay is fine since the distributor gear is pushed aganist the wear shim at all times engine is running.

[66 Gas Tires Oil]

How can I tell the newer valley pan from the older one? my engine is being assembled now. I have 2 valley pans is there a part number on it or distinguishing marks? Is that tri-power preety good? I see it on ebay and at the tri-power website about $25?

Jim

[Kenth]

1967 and earlier valley pans have the PCV mounting hole rearward, behind intake

[b-man]

Along with the rear mounted PCV valve the pan will have 4 shallow notches cut in the outer edges, one beneath each pair of intake runners.

1964 and earlier don't have the notches.

[66 Gas Tires Oil]

I think both my valley pans are newer. PVC in front. Can they be dented to fit? I meant to say the tri-power DVD for $25 in the previous post. Is that a good reference tool?

Jim

[b-man]

Find the correct pan.

You can't modify the later pans to work.

[66 Gas Tires Oil]

will do. next question is where does the PVC hook-up at on the early pan?

Jim

[66 Gas Tires Oil]

Will the earlier pan fit a 1975 455?

Jim

[b-man]

The early pans will fit any year Pontiac V8, the PCV is at the rear where it belongs for a Tri-Power setup.