Fayetteville NC Raceway Sun, 6-10-12

Don Pfau

Don Pfau

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I was planning to take my new Blk. 98 LSC to the drag strip Sunday to see what it does before any mods. Anyone else interested ??
 
if you make it to fla im in .want to make a couple runs, then change my gears when i get back from boston next week to see what the advantage is 1/4 mi style to 4.10. i'll doa run with hand controls and have my buddy doanother with feet.:)
im going to do that anyways for my regular mod baseline before i get into swapping out cams again, 'c' head and intake. coming rich? anybody moroso night?
 
Don Pfau said:
I was planning to take my new Blk. 98 LSC to the drag strip Sunday to see what it does before any mods. Anyone else interested ??
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I can't believe you are running 120mph with 8psi of boost. That is nuts...
 
Good luck gr81 those 4:10 they will help a lot. 98lsc I use to say it was only 7lbs but we were not reving past 5,600 rpm's. Now we are reving it to 6,250 rpm's and it is 8lbs. It realy was good air that last day. The DA was 100
 
Don Pfau said:
Good luck gr81 those 4:10 they will help a lot. 98lsc I use to say it was only 7lbs but we were not reving past 5,600 rpm's. Now we are reving it to 6,250 rpm's and it is 8lbs. It realy was good air that last day. The DA was 100
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Still, even 03 Cobras need around 15 psi to see 120mph.
 
Completely different power curve in the cobra, it is falling on its face at the big end. A vortech is just waking up.

-Alan
 
Yes the Vortech pulls much harder than the Cobra on the top end. The Cobra was 14psi but it falls off of that on the top. I thing as low as 9psi. (A Twin Screw would solve that though) But if I reved the Mark to 7,000 rpm's it would probably be 10psi. Plus Vortechs are less parasitic than a root supercharger. Plus a Mark VIII's bottom end is lighter so all things being equal it will make more power as long as it can hold together. Thanks to the converter and gears there 60ft times were almost identical.
 
I hate this. Every time you decide to go to Fayetteville, I wanna go but something always comes up. I'd like to go this time but I don't have the gas or money for the gas. I've got just about enough to get me to work and back M-W next week then my wife gets paid on Thursday. Living paycheck-to-paycheck sucks!!!:mad:
 
Don't forget the lovely meth injection Don has too. I think that is oneof the reasons Mike Schultz is considering running meth on his setup. Don and Mike both run VERY similar times but Mike has upwards of 17psi from what I have read before.

On a side note, I would love to run my car as it sits now in the Carolina air just to see if it has a low 13 in it before the dyno. That would give me even more hope. But oh well. I gotta work with what I got and the Mark8 is getting "sprung" tomorrow. We'll see how much my short times go down the crapper there. I'm still not convinced that my setup is going to be as bad as some tell me. I'm having faith.
 
Yes we pick up a couple tenths just from switching from -10 windshield washer fluid to a 50/50 mix of meth/water. Good luck tomorrow. Sorry to hear that thaywood.
 
Don Pfau said:
Good luck gr81 those 4:10 they will help a lot. 98lsc I use to say it was only 7lbs but we were not reving past 5,600 rpm's. Now we are reving it to 6,250 rpm's and it is 8lbs. It realy was good air that last day. The DA was 100
Click to expand...

Don Pfau said:
Yes the Vortech pulls much harder than the Cobra on the top end. The Cobra was 14psi but it falls off of that on the top. I thing as low as 9psi. (A Twin Screw would solve that though) But if I reved the Mark to 7,000 rpm's it would probably be 10psi. Plus Vortechs are less parasitic than a root supercharger. Plus a Mark VIII's bottom end is lighter so all things being equal it will make more power as long as it can hold together. Thanks to the converter and gears there 60ft times were almost identical.
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97MarkJA said:
Good luck with the run Don, 7k might be a little much for the bottom end.
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i cant afford a good converter right now, still working on c head swap and mach 1 intake, but there are a couple im looking at tci, b&m,and hughes (which i dont know much about).the b&m holeshot is 24-2600 stall, depending on cam, etc i believe they've got one to 2800 which is where im leaning, the tci has 3000 and 35-3800 i just think its too high for DD and the 'cruise rpm' recommended is 2600 rpm on the cam although im not sure how they get to that # since its a 1500-5800 rpm cam and i felt it pull higher than that but at lockup is where you should be at 100% efficeincy, for my area of driving i want lockup below where ill be cruising at rpm wise (around 3000) because ill be operating at 85-90% efficeincy which equates to 250-350 rpm,although at the track ill get the best over 3000 stall prob 34-3600, but one of the reasons i think your motor has lasted so long, Don , is the rpm's your spinning at save the low end. i plan on with just the head and intake swap, cfm wise will net 35-45 hp before porting. then drop the cams in and my added surprise, surprise, surprise ill be looooooow times n/a. eventually i may go vortech because of the way they add power although i love the roots style (especially with the old style chrome intake throttlebody triple butterflies just sticking through the hood which was the predecessor to the ram air
 
I agree. I decided a while back on a max. of 6.300 rpm's. And thats why I won't take a chance on manually shifting it. ----- Ive seen two converters that are suppose to be the same act quit different. One will drive very simmillar to stock untill you nail it and then you see the stall. And then the other you would have to rev it over 3,000 rpm's just to get it to start moving. The 3,800 stall thats in the 93 Mark is perfect for it as a daily driver. You wouldn't think it was a high stall converter untill you nail it ?? Not sure why or how to be sure what you are getting in that respect. I have a new 4200 stall for the 93 but I fear it will not be as street freindly. But if I put it in I plan to put the 3800 in the Black 98.
 
Don't get less than a 3500 stall. Don't fear the gear or the stall with these motors.
 
98LSC32V said:
Don't get less than a 3500 stall. Don't fear the gear or the stall with these motors.
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+1

I don't know how accurate my Info Center is but it has been showing 15mpg here lately in the summer heat cruising. My 91 Town Car with 100 less hp was averaging that so I don't see my current stall choice as being that bad comparatively. The Mark VIII is 5 seconds faster in the 1/4 mile and gets the same mileage. I think I'm doing pretty good. It could be far worse. My parent's neighbor has a 55 Chevy BelAir with gears and a mild motor build and it gets 6 mpg. LOL We have the technology that the older cars don't. Gear em up and stall em out. Modular engines approve this message. ;)
 
Went to the Fayetteville raceway at opening time (noon) and its locked up and no one else is there ?? Came home and called the number. No more test and tune on Sunday's until October. Rats
 
In preperation of going to the race track we put the cross drilled and sloted rotors with ceramic pads on and changed the oil. I spent the last three day cleaning buffing and waxing but I'm pleased with the results.

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