[fastgoat]

Has anyone out there made 2 hp/cu in. with a stock block normally aspirated Pontiac on race gas? Or with an aftermarket block? Documented (dyno sheets)?

[harry k]

at what cubic inches ar we talkin?/

[J.C.you]

dave johnson comes to mind and harry rienhold were getting close to 2 hp with the stock block.

[Steve C.]

Aren't they all over on the best for 2004 post.

[John Langer]

Last year I made 1.94 hp/cid, this year I am crossing my fingers for 1.98. I couldn't even imagine 2 hp/cid with series 2 heads without any welding or epoxy.

[Bud Lyons]

Scott Rex and Jack Gaydosh are a good start for the list. Bruce Machaile(sp) maybe John Langer.

[fastgoat]

I certainly don't know either Dave Johnson or Harry Rienhold personally but I've seen both cars in Indian Adventure ads, and while both might be making more power since then, at the time both were using that block,which must assume made more power per cube than the stock block. Johnson made 841 hp @ 446 cu in (would need 892 hp for 2.0). Rick Johnson, who built the engines and eventually bought Reinhold's car, made 792 hp @ 427 cu in (would need 854 hp for 2.0)
So unless Rex Scott's 517 makes 1034 hp the answer is either one or none.

[uneasyrider]

I have understood that the stock block is only good for around 700-800hp I guess I'm wondering if a 900hp+ stock Ponch would last more than a few passes? Would that cryo freeze thing need to be done to it first?

Uneasyrider

[vin63]

Originally Posted by uneasyrider

I have understood that the stock block is only good for around 700-800hp. I guess I'm wondering if a 900hp+ stock Ponch would last more than a few passes?

It depends on the generation of block, how you machine it, and your tune. I routinely make ~1500 bhp and have run the same three factory blocks for the last 5 years. One gave up the ghost last year when we had a lean-out condition from a return poppet spring failure.

[tempest455]

Hey Dave, I notice you are in Downers Grove. Know a "Tom Kramer" by any chance? He must be around 60 by now.

[Rob]

http://forums.performanceyears.com/g...7372#265107372

[White Warrior]

Eric Johnson,John Langer and myself have each built NA engines that approached 2HP/CU In.My engine,which was my own design was 446 " and dyno'd 3 years ago at 841 hp [corrected] Eric and John's engines were larger,in the 468-470 cu in range and made more power.
All three of our engines utilized Wentzler Series 1 or 2 cylinder heads. All 3 of the cars dipped into the 8's at roughly 6.9 lbs /cu. in and approx 150 mph,or so in over 3000# cars.
All three used IA blocks and billet cranks,Titanium valves and stiff cams.
I figure I was making at least 1.95 hp/cu in last year. 2 hp/cu/cu in may have been feasible but with huge costs. With a smaller engine it would have been accomplished.The cylinder heads,of coures are the limiting factor and the Wentzler Series 1 and 2 heads are limited in intake flow to about 360 cfm, without reducing the exhaust flow,which is counterproductive.

[uneasyrider]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Half-Inch Stud:
Does a front & rear engine mount plate keep the fractures away? <HR></BLOCKQUOTE>

A conventional Pontiac engine block isn't designed to be a structural member in the chassis of the car. The plate is to locate the engine in the car for better torque transfer by eliminating the flex in the engine mounts. The cracks in the block are caused from the internal stresses of the torque transfer through the block. If I remember correctly Pontiac's generally fail through the lifter galley and split lengthwise down the block. Think of the engine block as a brittle pop can and you grab the ends and twist it when you floor it.

Uneasyrider

[fastgoat]

Because it's hp per cube the size is not the issue. For argument's sake- 400 cubes and up.

[Rob]

Scott Rex is the only one I know thats made 2hp/cid on motor and he is in the fastest list at 7.68

I don't know a lot about Bruce and the others mentioned combos, they may have done it also.

It's sure to be a very short list.

-Rob

[fastgoat]

Has anyone out there made 2 hp/cu in. with a stock block normally aspirated Pontiac on race gas? Or with an aftermarket block? Documented (dyno sheets)?

[65nss4spdGTO]

Originally Posted by fastgoat

Has anyone out there made 2 hp/cu in. with a stock block normally aspirated Pontiac on race gas? Or with an aftermarket block? Documented (dyno sheets)?

I good thread from 2005, where are we now?

Calvin Hill
Hill Performance
708-250-7420

[john marcella]

Originally Posted by 65nss4spdGTO

I good thread from 2005, where are we now?

Calvin Hill
Hill Performance
708-250-7420

LOL, i didnt even notice the date of when this tread was started.

[john marcella]

Originally Posted by fastgoat

Has anyone out there made 2 hp/cu in. with a stock block normally aspirated Pontiac on race gas? Or with an aftermarket block? Documented (dyno sheets)?

Im 99hp past 2 per CID right now on the dyno and still have work to do, and i think its a P.O.S. so far

[Half-Inch Stud]

Does a front & rear engine mount plate keep the fractures away?