572 CID - Stock Kaase P51 heads

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Post  bruno on April 28th 2011, 9:52 pm

very nice , sounds wonderful cheers

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Post  '65 T-BOLT on April 29th 2011, 9:52 am

music to my ears Exclamation
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Post  psfracer on June 17th 2011, 4:59 am

So I am working on getting my license, so I did a couple of 60' and a couple of 330' test passes. Even though I totally f'd up the first two passes, I am getting used to the car, and my second two passes weren't bad.

Here is a video of one of my 330' test passes. An ok 1.378 60' time, leaving at only 4000 on the transbrake. This engine really likes to be above 5000, so I really need to be more aggressive off the line as I feel this car should be in the 1.31-1.33 range. Time to the 330' was a 3.908, which when compared to other ETs that would put me around 9.40. However, I really think this car has an easy 3.8X in it to the 330, which would put me in the 9.30 range on motor only for the 1/4.

Check out the video, I have two camera angles. Watch how long it takes me to cross the line after I get out of it (because I am also braking so I can make the first turn off), and I still manage a 6.73 @ 70.26 mph. Keep in mind I got out of it because I had to, full 1/8th mile license passes next week. I think this car should have a 6.0 in it for the 1/8th on motor only. I haven't weighed it yet, but based off of the 3622 lbs it weighed last time with the old combo, I am hoping it weighs 3450 or so now.

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Post  dfree383 on June 17th 2011, 8:11 am

Looks good, I'd say it has a bunch more in it once you start tuning and working on the set-up.

What did it weigh in at?


Last edited by dfree383 on June 17th 2011, 8:40 am; edited 1 time in total
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Post  KY JELLY on June 17th 2011, 8:24 am

looks and sounds very good. That is a very nice looking car too Very Happy
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Post  psfracer on June 17th 2011, 6:09 pm

dfree383 wrote:Looks good, I'd say it has a bunch more in it once you start tuning and working on the set-up.

What did it weigh in at?


I haven't weighed it yet, I will at the next PSCA event. I am hoping 3450 with me in the car. With the old set up the car was 3622. Yeah, I haven't even touched the shocks yet (strange double adjustables), but from watching the video I think I am going to preload the anti-roll bar more on the passenger side.

KY JELLY wrote:looks and sounds very good. That is a very nice looking car too Very Happy

Thank you. Now I just need to practice so I can run the car to its full potential.
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Post  richter69 on June 17th 2011, 6:22 pm

have you pulled the chip out of the 2 step and put the pedal on the wood while on the t brake and see where the converter stalls to?
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Post  psfracer on June 17th 2011, 6:50 pm

hahaha, where in the hell did you get that avatar?

NO, admittedly I have been somewhat of a pu$$y and have only left at about 4000 rpm so far. Its so different vs my 5 speed auto blower mod motor I used to have.
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Post  richter69 on June 17th 2011, 7:09 pm

how are you controlling the leave rpm?
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Post  psfracer on June 17th 2011, 7:32 pm

I have it chipped at 4000, which it reaches with me only halfway on the gas. I bet if I floored it on the TB with a 5000 chip it would be somewhere between 4500-5000. Do you agree it looks like I need to add more preload to the roll bar on the passenger side?

So what are you thinking, that the converter could be too tight? In the second video (go pro rear facing) you can hear the car go into the powerband towards the top of 1st gear (powerglide) probably 200 feet out or so.
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Post  richter69 on June 17th 2011, 8:41 pm

even chipping it lower it will still flash to wherever its going to, might be the part throttle leave....it sounds a bit tight. Getting a true rpm reading with the chip pulled and everything warmed up will tell ya..........only stay on it for a second or so, and do it on jackstands.
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Post  bruno on June 18th 2011, 8:23 am

3450 lbs .. pig pig pig ... is that a class rule ????? btw nice passes she has a lot more left in her

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Post  psfracer on June 18th 2011, 6:33 pm

Yeah, unfortunately it really is that heavy--but even so I still think this car should be in the very low 1.31-1.33 range. It will get better as I get better for sure. Full 1/8th mile passes next week.
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Post  richter69 on June 18th 2011, 8:31 pm

Its tough to get a non stripped/gutted doorcar real light
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Post  512Fairlane on June 19th 2011, 7:47 pm

Nice runs looking good.
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Post  psfracer on April 13th 2012, 1:09 pm

Ok a little update for this thread:

Best pass on motor only @ 3420 lbs was a 9.417 @ 143 mph. The 1/8th mile time was 6.017 @ 116.070 mph. The P51 heads, port wise, are still all stock.

Since then I have lightened the car from 3420lbs to 3300lbs. I am also adding a single stage fogger set up---which I will detail the set up here. I am sure on motor only this car has 5.9Xs in the 1/8th and 9.30s in the 1/4---but the tight converter and a cam more suited for N20, along with the cars heavy weight is holding back the all motor performance. Eventually I hope to get the car down to 3200 lbs with driver.

But--the plan was to run N20 all along, so in the end I am not too worried about it.

First, these are pictures of my intake with the plumbing done. I plan on squeezing a 200 shot.

572 CID - Stock Kaase P51 heads  - Page 4 NitrousIntake3

572 CID - Stock Kaase P51 heads  - Page 4 NitrousIntake1

572 CID - Stock Kaase P51 heads  - Page 4 NitrousIntake2

I am going with a dual bottle setup located where the passenger seat used to be:

572 CID - Stock Kaase P51 heads  - Page 4 Nitrous2

572 CID - Stock Kaase P51 heads  - Page 4 Nitrous1

The nitrous system will have its own regulator, but it will t off of the main fuel line since I have an aeromotive A2000 fuel pump. Plugs will be NGK -10s and since the motor runs best on 30 degrees total on motor, I think I will start off at 20 degrees just to be safe. I am going to use a progressive controller with a fuel pressure safety switch.

Lightening the car:

1) factory bumper replacements front/rear with some small chrome moly tubing
2) finally took out the window tracks, electric motors, crash bars, etc in each door---but still retained the factory interior pieces so the door still look stock.
3) carbon fiber rear deck lid
4) carbon fiber hood---4 inch cowl extended to the windshield.
5) took off the heavy dynomax bullet mufflers and put on some race Vibrant mufflers.

I decided NOT to replace the factory glass with LEXAN as that would be about a 55lb difference but easily over $1K. Plus I like the look of the factory glass.


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Post  Lem Evans on January 18th 2014, 11:24 am

bump

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Post  yellowhorse7 on January 18th 2014, 1:45 pm

Lem Evans wrote:bump

We are NOT going to clutter up this thread...

I tried to delete this post , but couldn't.

Thank you " The Management"
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Post  psfracer on December 30th 2015, 11:05 pm

Just to put a finishing bow on this thread--honestly I had thought I already did this.....
Back in 2012 I sent the heads to Charlie, we changed the intake valves to Titanium, some port work, and my best on motor pass dropped to a 9.16 @ 149 mph.   Then I ran a 150 shot and a 200 shot and ended up with a best 8.57 @ 158.78 mph at 3420lbs.     The change in ET wasn't as dramatic as I changed from running Q16 to a 120 octane fuel for nitrous, which is about 40 hp difference.  Then you have the added weight of the two bottles and an extra 16V battery (about 100 lbs).    So the 200 shot really was a 160 shot with 100lbs added to the weight of the car.

Here is a video which shows this combos best passes from 2013/2014.

https://www.youtube.com/watch?v=WDNENkkBBMs

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Post  Lem Evans on January 1st 2016, 1:56 pm

Cool Deal. That's the sharpest Mustang I've ever seen.

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Post  RaiderBC on January 17th 2016, 2:57 pm

Very impressive build!
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Post  jbozzelle on March 2nd 2019, 12:58 pm

Figured I'd drag this one back to the top since I'm embarking on the same build...

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