I could only attach 10 items so this had to be put in a separate post. Here is the entire article in .pdf format if you prefer it that way:
Ok here is a whopper of a necro post.. Don't kill me! Kinda nice to keep the thread alive.. Was this factory assembled Stage2 GSX the one that drove the streets for publicity and other real power testing, the one that blew away the proto 455 RA5 GTO and other so called development cars? Back then I read the Stage 2 cam was meant for open headers and lost power with using full exhausts? Same cam? anyone know or maby were they testing cam profiles if it was to be a 71 model option?
So are those Stage 2 Mickey Thompson SS headers on it? They sure look different from the regular MT's. They have an extra flange at the front of the big box collector.
Yes same car. #4085 was a 4-speed car to boot. It was said that Bill Trevor hated the car because he didn’t like a 4-speed car, nor a noisy car
Thats funny.. Do you know if it even ran some type of exhaust? It ran the streets at times looking to race if i'm correct? It had to have something more than open headers.
Sorry don’t know. Good question, always wondered the same. I did run the Reynolds car with open headers in the town of West Covina with Don in the passenger seat to get some race gas. Scared him with some short stop light races! Fun times for sure.
LOL! Probably been posted but want to ask.. What is your KenneBell car motor specs? Does it have the same cam specs and compression ratio as when it ran a 10.70 1/4 or tamed a bit? I'm guessing your heads are aren't ported. I'm sure though KenneBell ported them some which isn't mentioned in his 1/4 mile chart with the part changes??
well… heads are not ported at all. No grinder even touched them. That includes both sets I have. The vertical boss heads and the production Stg2’s. Cam is suited for the stag2 unlike the factory cam which you may know was designed for regular 455’s and or Stg1’s. More compression and a slight offset ground crank. That’s about it. Everything else being the same.
Years ago (like 40) I was talking to Ed St. Angelo and he said he had a 68 stage 2 in late 69 and I said yeah Stage 2 cam not the heads. He said no .....Stage 2 heads on "400" (I bet it was a 430 tho) with chamfer on top of bore to aid flow. Said it screamed....but then said ....not legal. I think he was trying to run Super Stock. He was a Buick dealer...did he maybe get something out the back door?
300lbs? Hmpfh! Should have seen my fat a$$ when I literally tried to hit “455”!(made it to 430 & had to surrender). I am now down to a spindly 350 small block
Somewhere, somehow, there has to be some other style prototype Stage 2 heads, buried in someones garage, basement or in a corner or closet at Buick motor division. Pieces, valves, cams, bad castings etc. even blue prints in a old filing cabinet.. We might never know just like how they built the great pyramids and whats still hiding in them.