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nice! what intercooler did you have before? I'm still on the stock ECS intercooler and at 900whp am guessing I'd need to upgrade mine at some point
I had the twin Procharger setup. I'm impressed with those numbers from your D1. I'm guessing you are running the 3.4" pulley. How much boost are you seeing?
I had the twin Procharger setup. I'm impressed with those numbers from your D1. I'm guessing you are running the 3.4" pulley. How much boost are you seeing?
I was gonna say the same thing 900 on a d1 is impressive. I usually only see that around the mid 700. heck I wasn't even planning on making 900 whp on my f1a 402 stroker
just a hair over 15psi at redline. LME built LSX block 427 with MAST 305 heads, lme customer blower cam, etc and lots of cool stuff. car was built for more power but just have been enjoying the car at 907whp
It was more than I expected too. Probably more in it since this was just on 91 pump gas and dual methanol but with better headers, race gas or e85, maybe better intake, it would probably make more. but ultimately it's just a dyno number so we'll see what trap speed the car does later this summer.
problem is the D1 runs out of steam on this motor at 5900-6000rpm. If I could rev to 7000rpm in 4th with my tires I could hold 4th gear in the half mile and car would trap much much better even if power curve flattened out.
just a hair over 15psi at redline. LME built LSX block 427 with MAST 305 heads, lme customer blower cam, etc and lots of cool stuff. car was built for more power but just have been enjoying the car at 907whp
It was more than I expected too. Probably more in it since this was just on 91 pump gas and dual methanol but with better headers, race gas or e85, maybe better intake, it would probably make more. but ultimately it's just a dyno number so we'll see what trap speed the car does later this summer.
problem is the D1 runs out of steam on this motor at 5900-6000rpm. If I could rev to 7000rpm in 4th with my tires I could hold 4th gear in the half mile and car would trap much much better even if power curve flattened out.
No wonder you are at such little boost for that HP level!
c6 vette so built z06 rear end with 3.42 gears. 4th gear on 17" ME ET street R tire with a little bit of stretch and 7100rpm would be ~174mph or something, which i'd be thrilled with at my local event. plan would be to only rev that high for a split second in only 4th gear though. still not sure that's the route I'll go though, need to learn more about the 94a, maybe ysi is better for my setup. Will be cool to see how your setup does!
A friend lent me an F1A-94 to try out to compare against my F1R. I pullied it to make 18 psi, just like the R. I didn't get to do a back-to-back, but it's still obvious the F1A-94 is better.
With the R, it would consistently run 150 mph at 18 psi, 16* timing, in decent weather (70-80 degrees). The day I had the -94 on, same 18 psi, 16* timing, but it was 100* outside. Picked up 2 mph, went the same ET (track was greasy). Definitely didn't lose any down low power or torque. Granted the -94 took a smaller pulley to make the same boost as the R.
Now... if I had a built motor and could turn it up to say, 23-26 psi.... no doubt the F1A-94 would continue to make power like crazy while the F1R would become a parasite.
A friend lent me an F1A-94 to try out to compare against my F1R. I pullied it to make 18 psi, just like the R. I didn't get to do a back-to-back, but it's still obvious the F1A-94 is better.
With the R, it would consistently run 150 mph at 18 psi, 16* timing, in decent weather (70-80 degrees). The day I had the -94 on, same 18 psi, 16* timing, but it was 100* outside. Picked up 2 mph, went the same ET (track was greasy). Definitely didn't lose any down low power or torque. Granted the -94 took a smaller pulley to make the same boost as the R.
Now... if I had a built motor and could turn it up to say, 23-26 psi.... no doubt the F1A-94 would continue to make power like crazy while the F1R would become a parasite.
That is awesome! Bob
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A friend lent me an F1A-94 to try out to compare against my F1R. I pullied it to make 18 psi, just like the R. I didn't get to do a back-to-back, but it's still obvious the F1A-94 is better.
With the R, it would consistently run 150 mph at 18 psi, 16* timing, in decent weather (70-80 degrees). The day I had the -94 on, same 18 psi, 16* timing, but it was 100* outside. Picked up 2 mph, went the same ET (track was greasy). Definitely didn't lose any down low power or torque. Granted the -94 took a smaller pulley to make the same boost as the R.
Now... if I had a built motor and could turn it up to say, 23-26 psi.... no doubt the F1A-94 would continue to make power like crazy while the F1R would become a parasite.
Tvanlant: what belt setup were you running ?
that's super interesting. the only good dyno comparison of an F1a vs F1a94 showed something like 50-60whp loss in the mid range but the power curves crossed on a 376ci setup I believe at ~5k rpm so at the track I don't think you'd ever see WOT at
It's just a regular old 8 rib setup. Nothing fancy. I don't run the filter setup at the track.
I've messed with a few local cars on the dyno with the F1A-94. The -94 doesn't make *less* power in the mid range. It makes *more* boost up top. People want the *peak* boost to be the same between blowers. To make that happen, they slow the -94 down to make the same peak as their old blower. Now that it is slowed down, the -94 makes less boost in the mid range, resulting in less power. If they were to match boost level in the mid range, the -94 would make the same power, if not more, for a given boost level. Then obviously, it would make a ton more power up top as it creates more boost vs a regular blower as rpm increases.
any info on car weight and transmission setup? any indication seeing belt slip?
I'd really like to stick with my normal 8 rib belt setup and you're the only person I've seen pushing the 94a on a standard 8 rib belt, so I'm curious to guess how much hp that thing is pushing.
impressive setup to go 152mph with fairly low timing and hot weather for sure
It weighs 3475 lbs with me in it, th400 trans w/ brake - nothing special.
Zero slip. Hell, we stuck a P1SC on it a few weeks ago just for fun. Put a 3.40 pulley on it to max the blower speed out and it didn't even slip! Went 9.47 @ 148. It maxxed out at 13 psi, but it was a pretty flat 13 psi lol
Look at all the fast C7s, they are all on the standard Procharger 8 rib kit. Stangkilr runs a -94 and I think he has gone 16X mph in the 1/4.
8 rib can go a long way. People who have issues with them just don't have them set up correctly.
any info on car weight and transmission setup? any indication seeing belt slip?
I'd really like to stick with my normal 8 rib belt setup and you're the only person I've seen pushing the 94a on a standard 8 rib belt, so I'm curious to guess how much hp that thing is pushing.
impressive setup to go 152mph with fairly low timing and hot weather for sure
18 psi on a LQ4 with that big of a blower seems right for that mph, no?
I'm was on 13 psi with my D1 doing 141mph with 14 degrees timing. I'm hoping that with more timing, and the F1a-94, with maybe 16-18 lbs of boost, that I will see that mph. Obviously every setup is different.
good stuff, thanks tvan. It's amazing how sensitive these belt setups get at higher whp levels. My 8 setup got noticeably better when I shaved literally a thousandth off some of the spacers.
what i meant by "impressive" was that exact same boost and same timing but 20* hotter day to pick up 2mph is pretty darn good. Good evidence that the 94a is much more efficient from parasitic hp perspective. Really good to hear.
I'm not sure why so many guys end up going with ysi to get to 1,000whp and not the 94a....
good stuff, thanks tvan. It's amazing how sensitive these belt setups get at higher whp levels. My 8 setup got noticeably better when I shaved literally a thousandth off some of the spacers.
what i meant by "impressive" was that exact same boost and same timing but 20* hotter day to pick up 2mph is pretty darn good. Good evidence that the 94a is much more efficient from parasitic hp perspective. Really good to hear.
I'm not sure why so many guys end up going with ysi to get to 1,000whp and not the 94a....
in for Troy results!
I agree, its probably as close to an apples to apples comparison and I think it's very promising as well. I'm looking forward to it but I still likely won't be at your power level, I dont't think my drivetrain is ready to be pushed that hard....yet
my car came with a D1SC on it but now that I know more about blowers I'm honestly surprised people even go with the D1 instead of paying a couple hundred bucks more for the f1a94 which is lightyears more modern technology. If the 94a is that much more efficient people could always just pulley it down if they wanted more mid range power anyway and it seems both procharger and real world experience show the 94a is much more efficient with lower parasitic loss per unit of whp or unit of psi or however you want to measure it.
94a will have miles of room to grow also, very curious to see the shape of the dyno curve especially at upper rpm, and IATs relative to the d1 for your setup Troy.
07-08-2016, 12:27 AM
Bob 
