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01-15-2009, 06:18 PM | #21 |
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Re: Factory experimental
Rory said, "I think that any forced induction Stocker should be limited to the factory boost pressure"...
Jeff Lee said, "I believe all pressurized engines should be held to OEM specifications. " __________________________________________________ ___________________________________ Where were you guys about 6 months ago, when I was beating the drum for tell-tale boost gauges on all forced induction cars because of their inordinate showing as #1 qualifiers at National events??? In the last four years, (had stats for 2004-2007 at the time) about two percent of the cars (turbo cars) had nailed down something like fifteen-percent of the #1 qualifying slots... a statistical anomaly that screams for attention. Now that the issue is a different one, but the cause of the problem is the same, you come out with this. Since horsepower at the flywheel is almost certainly boost-dependent, OF COURSE it needs to be monitored to factory specs, one way or another. Tell-tale boost gauges is one effective way to do it. I still think these "new" factory race cars belong in S/S.... especially, the ones with less than 7.5 lbs/hp. My 2-cents...
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Bill |
01-15-2009, 06:30 PM | #22 |
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Re: Factory experimental
Rory, Yes there were supercharged Ford's and Studebaker's in "Stock" many years ago. Larry Walker and myself at one time had to make a full pass, with a tech inspector riding along monitoring his own calibrated boost pressure gauge. We, (1957 Ford) were allowed 6# of boost @ 4800 RPM's, plus 1# of boost for every 1000 RPM's over 4800 RPM's we turned the engine. I understand Gordon Williams had to do the same with his Studebaker also. Has anything like that been done lately, or are there any boost specs on these new cars at all. Any body know?
Fred Holdorf |
01-15-2009, 07:01 PM | #23 |
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Re: Factory experimental
How much HP does a 426 Hemi or 427 Chevy stocker motor make?
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01-15-2009, 07:08 PM | #24 |
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Re: Factory experimental
A good Street Hemi should make somewhere in the neighborhood of 650 HP. Don't know about the 427's.
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Jared Jordan 7503 SS and Stk |
01-15-2009, 07:15 PM | #25 |
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Re: Factory experimental
Where were you guys about 6 months ago, when I was beating the drum for tell-tale boost gauges on all forced induction cars because of their inordinate showing as #1 qualifiers at National events??? In the last four years, (had stats for 2004-2007 at the time) about two percent of the cars (turbo cars) had nailed down something like fifteen-percent of the #1 qualifying slots... a statistical anomaly that screams for attention.
Now that the issue is a different one, but the cause of the problem is the same, you come out with this. Since horsepower at the flywheel is almost certainly boost-dependent, OF COURSE it needs to be monitored to factory specs, one way or another. Tell-tale boost gauges is one effective way to do it. I still think these "new" factory race cars belong in S/S.... especially, the ones with less than 7.5 lbs/hp. How about when a turbo car at a alt. track sets a record 1.58 under but wait, it can't get hit because it's a alt track. Sorry almost a year later that still bothers me.
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George Roussel Jr. 4262 1996 S10 n-o-p/sa |
01-15-2009, 07:24 PM | #26 | |
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Re: Factory experimental
Quote:
Thanks for looking up the numbers. So if a 425 horse mustang goes 1.4 under it will get 3.25% Monday morning that will put it up to 440 horsepower. With only a 3239 shipping weight the hard top would end up at 3239/440= 7.36 and would no longer fit in AA it would be a natural SS/C the car is only 7 horsepower away from not fitting in stock. The convertible has a little more leeway but not much. I could see an AAA class coming awful fast!
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Bill Edgeworth 6471 STK |
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01-15-2009, 07:41 PM | #27 |
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Re: Factory experimental
An excellent 427 will make about 640 Horsepower tops.
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Bruce Noland 1788 STK |
01-15-2009, 08:19 PM | #28 | |
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Re: Factory experimental
Quote:
This is a good post. The new blown cars should be factory experimental. If a mustang comes 'stock' with 700hp, what will it make tricked out? 850? Good luck getting that to hook. |
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01-15-2009, 08:34 PM | #29 |
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Re: Factory experimental
I am afraid some are missing the writing on that wall. As always factoring will be under rated, under supervised and less efficiently performed than on the old cars currently running. Why? New cars new blood,in the race scene and news. Guys will give up beating on the 67 camaro, the darts or fords to build the " weakly factored" new stuff. This will dominate the news, the best engineered, best paint till some appropriate number are spread through out the country. THEN some one might notice a minor change in HP is needed, a boost gauge might be nice or a spec on inlet size. History just keeps repeating itself as a method of freshening up the pictures in dragster and the magazines. The 90s injection problems will look like a minor issue again.
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01-15-2009, 08:54 PM | #30 | |
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Re: Factory experimental
Quote:
The SCCA stopped the tide of MOPAR FWD cars dominating the races decades ago. They gave turbo racers pre-set, sealed & locked waste gates that were installed prior to the race ahead of the carb or injection system. I'm not sure if the waste gate was set to an OEM or SCCA standard but it took care of the issue.
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Jeff Lee 7494 D/S '70 AMX |
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