Preliminary Dyno #'s from my new F1A/402/AFR225 combo
03-05-2008, 03:51 PM
#1
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Preliminary Dyno #'s from my new F1A/402/AFR225 combo Well I finally got my belt issues sorted out and had a chance to see what this little "F1A" can do. It's about the same size as D1SC or P1SC-the gear case is where the thickness comes-it's interchangeable with any of those blowers in case you wanted to upgrade. It's just an "off the shelf" 402 built by "SLED28" here and the heads are "out of the box "AFR225's 72cc, Cam is my own grind that I'm testing, LS6 intake, Stock TB, Stock GM MAF, American 1 7/8 racing headers, Magnaflow catback-great for keeping the car tame-a very nice deep rumble without being annoying.
Around 5000-5500 the dyno was switching from RPM to Speed and the graph goes skewy so the 890(861 corrected) was between that RPM. We smelled alot of rubber so were not sure if were spinng the tires or what-hard to tell when your in the car.We've already talked to Dynojet to resolve the issue so we can find out where the car revs out to. I' don't have my laptop here so I'm unsure of how much boost the blower made at 5000 but at 6900 it was close to 18lbs. This was through Rodneys Level 5 4L65E that I've been thrashing on sice last year and it's holding like a Champ!
Once the dyno's sorted out I have anohter cam to try as well as an F1R and a Victor JR. I'm sure this little F1A can hit 950 RWHP. I'm sure Frank's 427 with the F1R will be well over 1000rwhp.
Around 5000-5500 the dyno was switching from RPM to Speed and the graph goes skewy so the 890(861 corrected) was between that RPM. We smelled alot of rubber so were not sure if were spinng the tires or what-hard to tell when your in the car.We've already talked to Dynojet to resolve the issue so we can find out where the car revs out to. I' don't have my laptop here so I'm unsure of how much boost the blower made at 5000 but at 6900 it was close to 18lbs. This was through Rodneys Level 5 4L65E that I've been thrashing on sice last year and it's holding like a Champ!
Once the dyno's sorted out I have anohter cam to try as well as an F1R and a Victor JR. I'm sure this little F1A can hit 950 RWHP. I'm sure Frank's 427 with the F1R will be well over 1000rwhp.
03-05-2008, 05:38 PM
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Wow big power! I thought you had to go speed density past 600 rwhp or so? You are still running the stock maf? I am hoping to hit 850rwhp at 15 to maybe 18psi on my combo.But its an m6 so should be a bit easier than your auto. Dave is buidling me a new 408!
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03-05-2008, 07:38 PM
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No bro-what's happening is after around 124mph or say 5400 the signal gets lost and Dynojet is trying to make it up using drum speed. So the 890 is really at 5500 or so. Were not getting a good signal so we talked to Dynojet and we know what to do now-we need to get the signal from the coil. Were going to do that on saturday and post up the results!
03-05-2008, 09:03 PM
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NICE! FYI - We ran into the same problem with my car on a Dynojet... Just grabbed the wire off the coil and switched to low voltage induction... Problem solved.
03-07-2008, 06:39 PM
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We ended up making our own bracket and its working good so far. We will try a F1R on the car soon and see how it holds up. We are hoping to have a bracket that will make 1000+ rwhp without issues. Then we can go into full production.
03-07-2008, 08:31 PM
#11
No bro-what's happening is after around 124mph or say 5400 the signal gets lost and Dynojet is trying to make it up using drum speed. So the 890 is really at 5500 or so. Were not getting a good signal so we talked to Dynojet and we know what to do now-we need to get the signal from the coil. Were going to do that on saturday and post up the results!
O.K., I am curious what kind of seat pressure you are running on that beast. I have all very similar hardware for mine. Whose intercooler and what kind of IAT's are you seeing. thanks
03-07-2008, 09:21 PM
#12
You definitely lost something up top.Looks like boost to me by either belt slip or floating valves.
As for the tach signal.Clean all the grounds in your car and add some more.Vette's are known to have a bad grounding system which screws up the tach lead.
As for the tach signal.Clean all the grounds in your car and add some more.Vette's are known to have a bad grounding system which screws up the tach lead.
03-07-2008, 11:26 PM
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Hey bro-it didn't lose boost-it made 17.78 psi-it did switch from rpm to speed-going to tap into the coil tomorrow then we'll see-the cam may have too much advance-I have anohter grind rieady to go in if thats the case!
03-08-2008, 09:09 AM
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My turn on the cam selection this time, you've had your chance. No more Ford cams in my motors. 
We do have quite a bit of spring pressure, I doubt its that.
We do have quite a bit of spring pressure, I doubt its that.
03-08-2008, 09:12 AM
#15
03-08-2008, 01:48 PM
#20
Your MAF tune will become a totally weather-dependent tune if it's maxxed by 3.5K. From a cold to hot day you will have a large AFR variation.
Sick numbers, I just wouldn't want a setup that I had to tweak on every single time the temperature changes 15-20degrees. Just my 2cents.
Sick numbers, I just wouldn't want a setup that I had to tweak on every single time the temperature changes 15-20degrees. Just my 2cents.
