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#21
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The Pontiac engine certainly has its limits and can only be competitive to a point - this was learned back in the late 1960's/early 1970's when some Pontiac racers were installing Hemi engines in an effort to be competitive AND keep up with the Hemi dominated field. When you take something like an engine and completely redesign the block from top to bottom and simply retain those identifying features common to a factory Pontiac engine such as head bolt, oil pan, and timing cover placement, and then add a never available factory top end - well, the engine has steered so far from a factory piece that it is really not a Pontiac engine anymore than the drag racers who inserted Hemi engines in their Pontiac funny cars. So why not simply follow the earlier racers who were unable to compete using a true Pontiac engine and went Hemi? Just carve out some Pontiac specific valve covers as the Pro Stock guys did in early 2000 and slapped them on 427 Chevy big block engines and convinced themselves and the racing community that they weren't Chevy engines, they were Pontiac engines because the name on the valve cover said so. Pontiac logo valve covers on an 811 cubic inch Hemi would be a better competitor, maybe even cheaper to build, and I am sure the racing community could be convinced that no, it's not a Chrysler Hemi, but a Pontiac Hemi because the valve covers say so. With the broad acceptance of the LS engine in a Pontiac as if it was made that way, I think the Pontiac Hemi should be a consideration.......and a track competitor/winner among the real racers who actually win. Might give them a run for their money. |
#22
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I believe Arnie Beswick did something like that^^^ Switched to a Bowtie block and ground the Chevrolet emblem into the shape of a Pontiac crest and called it a day.
IMO nothing close to running a traditional block that has Pontiac dimensions. |
#23
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I thought the Pontiac Engine was the same type of engine (made by Brodix) for Pro Stock racing that John Clegg ran for several years. The Block had a Pontiac Part Number in the books but allowed Brodix "Chevrolet" heads to be installed and run.
https://brodix.com/ I believe recently that John C said NHRA no longer allowed that engine. 8B 2000A*: 4.480 or 4.590 Bore / Standard Cam Location / 9.800 or 10.200 Deck Height Their Heads were also cast with a Pontiac Logo like the blocks. Tom V. The 10.200 deck height was one of the selling points that the Block was a traditional Pontiac engine design. ,
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#24
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#25
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With thinking like that all those stroked pontiac blocks are half Chevy using rods and bearings for one. My 80 t/a came with a 305 stock is it less a Pontiac than a 79 400 car or a 06 GTO with a LS it’s not a Pontiac either? I love traditional Pontiac engines more than anyone but there’s a reason they went away in 79 out dated technology.
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#26
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In my world, engines don't get looked at as a "brand" . The parts don't know what brand they are.. it's all dimensions, sizes, parameters and math. If anything is going to dictate what brand it is, it's the block. Anything bolted to that specific brand block, is that brand. Some of us care more about making power and doing what it takes to make that power. That is how things evolve. A Big Chevy didn't come factory with Chief heads, but it's still a Chevy. It's the foundation that matters. Not what it is bolted to it. Nobody is saying ANYTHING about calling a Chevy engine a Pontiac because it's in a Pontiac. |
#27
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Criteria for this build was Bracket racing,We sizes the induction tract to make peak HP at 7200RPMs keeping the usable power curve at or under 8000RPMs. Bill C.
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Checkered Flag Machine & Ceralli Competition Engines Racing engines and induction development http://www.checkeredflagmachine.net/ |
The Following 2 Users Say Thank You to cfmcnc For This Useful Post: | ||
#28
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117 is correct.We have other Pontiac cams done at 118-120 per application.Just for info current NHRA Pro-Stocks at 119.5-120LSA.Bill C.
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Checkered Flag Machine & Ceralli Competition Engines Racing engines and induction development http://www.checkeredflagmachine.net/ |
#29
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2-Stroke V8 development to the Front
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#30
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The engine you built for this customer is similar to the one I have compression and horsepower wise. In my case we went with a 114 LSA, I may try something a little wider the next time around.
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62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs |
#31
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