Bigger SuperCharger
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Joined: Nov 2014
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From: Fort Worth Texas
So, aside from the upcoming Z06 injectors and boost a pump, the next phase of "upgrades" will focus on non engine components.
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From: Fort Worth Texas
Racer
Joined: Aug 2015
Posts: 342
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From: San Antonio Texas
St. Jude Donor '16
So what caused it to fall at 5600? Mine (was) doing the same thing. I'm asking for all the numbers and nobody is wanting to provide details so I'm heading up to lethal right now to find out maf volume and see what the dyno chart looks like.
We followed you and went to a 416, low pressure fuel pump, sump, bigger lines e85 sensor, ysi and 2,nozzles but they are saying 825-835 is what they are getting. I'm going to call Christian and drive it to Dallas at the end of July
We followed you and went to a 416, low pressure fuel pump, sump, bigger lines e85 sensor, ysi and 2,nozzles but they are saying 825-835 is what they are getting. I'm going to call Christian and drive it to Dallas at the end of July
Last edited by Steven Popham; Jun 25, 2016 at 11:12 AM.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
So what caused it to fall at 5600? Mine (was) doing the same thing. I'm asking for all the numbers and nobody is wanting to provide details so I'm heading up to lethal right now to find out maf volume and see what the dyno chart looks like.
We followed you and went to a 416, low pressure fuel pump, sump, bigger lines e85 sensor, ysi and 2,nozzles but they are saying 825-835 is what they are getting. I'm going to call Christian and drive it to Dallas at the end of July
We followed you and went to a 416, low pressure fuel pump, sump, bigger lines e85 sensor, ysi and 2,nozzles but they are saying 825-835 is what they are getting. I'm going to call Christian and drive it to Dallas at the end of July
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Joined: Nov 2014
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From: Fort Worth Texas
Still a tiny issue here. We arrived home from our vacation. Since then, we've only been on ONE W.O.T. run. I'm not sure exactly what RPM we were at but it was somewhere in the mid to high 5000 rpm range, the car felt like it was running out of fuel (which I am pretty positive that's what is happening). After reading things about the boost a pump, I'm not convinced that we should go that route. Is there a more suitable solution? Hoping to get this tiny gremlin nipped in the bud before WANNAGOFAST @ Sulphur Springs in November.
Racer
Joined: Aug 2015
Posts: 342
Likes: 26
From: San Antonio Texas
St. Jude Donor '16
Still a tiny issue here. We arrived home from our vacation. Since then, we've only been on ONE W.O.T. run. I'm not sure exactly what RPM we were at but it was somewhere in the mid to high 5000 rpm range, the car felt like it was running out of fuel (which I am pretty positive that's what is happening). After reading things about the boost a pump, I'm not convinced that we should go that route. Is there a more suitable solution? Hoping to get this tiny gremlin nipped in the bud before WANNAGOFAST @ Sulphur Springs in November.
After my fire I don't think im going to do a meth dependent car again
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Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
You didn't upgrade the low pressure side at all? Stock in tank pump? First step will be to find it where you're losing fuel, on the low pressure side or the high pressure side, or both. I know Joe at CPR has done many low pressure side secondary systems, but as for the high pressure side if you're using lt4 HPFP and injectors that's all we have right now. Options are a lot more meth or a direct port system on top of the DI system. Congrats you've pushed the fuel system to the limit.
Still a tiny issue here. We arrived home from our vacation. Since then, we've only been on ONE W.O.T. run. I'm not sure exactly what RPM we were at but it was somewhere in the mid to high 5000 rpm range, the car felt like it was running out of fuel (which I am pretty positive that's what is happening). After reading things about the boost a pump, I'm not convinced that we should go that route. Is there a more suitable solution? Hoping to get this tiny gremlin nipped in the bud before WANNAGOFAST @ Sulphur Springs in November.
Thread Starter
Pro
Joined: Nov 2014
Posts: 687
Likes: 83
From: Fort Worth Texas
You didn't upgrade the low pressure side at all? Stock in tank pump? First step will be to find it where you're losing fuel, on the low pressure side or the high pressure side, or both. I know Joe at CPR has done many low pressure side secondary systems, but as for the high pressure side if you're using lt4 HPFP and injectors that's all we have right now. Options are a lot more meth or a direct port system on top of the DI system. Congrats you've pushed the fuel system to the limit.
Thread Starter
Pro
Joined: Nov 2014
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From: Fort Worth Texas
Pro
Joined: Oct 2014
Posts: 737
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From: oklahoma/arkansas
year I was at sulphur Springs last year. it was a mess. I waited till after the lunch period and let other people run to help blow off some of the dust. I still managed to get 171.36 spinning at the beginning of course lol
Le Mans Master
Joined: Mar 2010
Posts: 7,050
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From: DFW TX
You could do direct port!
Thanks Steven! Do they not prep the strip? At those speeds, I would agree about letting off! Nascar uses commercial trucks with blowers on them to help clean debris / dry the track. Surely those type of trucks could be rented out or used to somewhat prep the straight away. As for meth, my wife and I are very much aware of your recent tragedy!
Just got my quote from James over at Deatschwerks about 2 hours and 45 minutes ago. Our high side seems to be mostly "OK" but the low side cannot keep up for sure! Would sure love to see more injector options but things are pretty limited at the moment. Yep, we cannot go any further with our current fueling capabilities.. sigh
Just got my quote from James over at Deatschwerks about 2 hours and 45 minutes ago. Our high side seems to be mostly "OK" but the low side cannot keep up for sure! Would sure love to see more injector options but things are pretty limited at the moment. Yep, we cannot go any further with our current fueling capabilities.. sigh
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Joined: Nov 2014
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From: Fort Worth Texas
OMG.. my wife would probably kill me! ..Don't give me any ideas.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Thread Starter
Pro
Joined: Nov 2014
Posts: 687
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From: Fort Worth Texas
Well.. with only a small fueling bug on the top end at WOT, I think we are going to call it "good" for our C7. It's well above the 1000 hp mark. I've got another project that has been 10+ years in the making. After speaking to my high hp hotrod connections, I'm officially in the market for a brand new racing setup for my 1995 4th gen T/A. The car has been restored by yours truly. I have all new parts for the car that I'm just going to have to sell off because I am going a different route with it. I originally built the car to be a weekend cruising car (355cid, beefed up internals, LT4 hotcam, built 4L60E trans, etc). It has exactly 0 miles on that motor and trans. After much discussion, I'm leaning towards a 400cid (or slightly bigger) twin turbo (or would consider a big supercharger) setup. I'm trying to get my ducks in a row. Looking to be around the 2000 crank hp number.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
Man... I wouldn't call a fueling issue on the big end at WOT a "small bug"... I'd be scared to get into it at all.
Well.. with only a small fueling bug on the top end at WOT, I think we are going to call it "good" for our C7. It's well above the 1000 hp mark. I've got another project that has been 10+ years in the making. After speaking to my high hp hotrod connections, I'm officially in the market for a brand new racing setup for my 1995 4th gen T/A. The car has been restored by yours truly. I have all new parts for the car that I'm just going to have to sell off because I am going a different route with it. I originally built the car to be a weekend cruising car (355cid, beefed up internals, LT4 hotcam, built 4L60E trans, etc). It has exactly 0 miles on that motor and trans. After much discussion, I'm leaning towards a 400cid (or slightly bigger) twin turbo (or would consider a big supercharger) setup. I'm trying to get my ducks in a row. Looking to be around the 2000 crank hp number.