Cam/100 shot LS1 vs H/C LT1
06-18-2018, 02:37 PM
#3
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Good close run!
I realize that he has heads to your cam only LS1 but I would have thought that your 100 shot and your lighter weight would have gave you enough to pull him. I did not hear either of you spin so I assume you both hooked pretty good.
Nice job though.
I realize that he has heads to your cam only LS1 but I would have thought that your 100 shot and your lighter weight would have gave you enough to pull him. I did not hear either of you spin so I assume you both hooked pretty good.
Nice job though.
06-18-2018, 02:45 PM
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He's making about 50 more whp than I am when I'm on a 100 shot. And I'm only around 100lb lighter. He pulled away exactly how 50 more whp to my car should. I was happy with the outcome. You can't win em all! He can drive damn good too so of course that helps a lot
06-18-2018, 03:05 PM
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Unless you have weight reduction you might be a tad heavier, and combined with maybe 50 less horsepower. Is that about right probably? If so, you did pretty good considering
Edit: I just now saw the post above. I guess you have a little weight reduction as well
Edit: I just now saw the post above. I guess you have a little weight reduction as well
06-18-2018, 03:13 PM
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All I have weight reduction wise is jack, spare tire, and front sway bar delete. It weighs 3300-3320 like this. With the rear seats and front passenger seat removed it weighed 3280. His car is about 100lb heavier and me and him weigh the same, about 200lb. He just overpowered me. Those LT1s are strong. I would've turned it up but my car has been running lean on spray and I can't figure it out. I don't have a fuel pressure gauge yet but no matter how big of a fuel jet I put in, it still goes lean when the spray comes on. I have a racetronix hotwire kit so it doesn't make sense how that's happening
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06-18-2018, 04:38 PM
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All I have weight reduction wise is jack, spare tire, and front sway bar delete. It weighs 3300-3320 like this. With the rear seats and front passenger seat removed it weighed 3280. His car is about 100lb heavier and me and him weigh the same, about 200lb. He just overpowered me. Those LT1s are strong. I would've turned it up but my car has been running lean on spray and I can't figure it out. I don't have a fuel pressure gauge yet but no matter how big of a fuel jet I put in, it still goes lean when the spray comes on. I have a racetronix hotwire kit so it doesn't make sense how that's happening
06-18-2018, 04:45 PM
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On a 100 I've seen it be between 13-14.0. I've seen it hit low 15s before and that scares the **** out of me. I even rewired the fuel solenoid separately from the nitrous and made it come on a split second before spray, and I put a 42F jet in with a 62N and had the nitrous turned down to 65% with the fuel on 100% and it was still lean. Like 13.5-14.0. That sized fuel jet should have been giving me plentyyyy of fuel. I know its pulling fuel because the fuel jet is covered in gas after a pull. I've checked. I need to get a fuel pressure gauge but a 100 shot on a cam only car shouldn't be having fueling issues.
06-18-2018, 05:28 PM
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On a 100 I've seen it be between 13-14.0. I've seen it hit low 15s before and that scares the **** out of me. I even rewired the fuel solenoid separately from the nitrous and made it come on a split second before spray, and I put a 42F jet in with a 62N and had the nitrous turned down to 65% with the fuel on 100% and it was still lean. Like 13.5-14.0. That sized fuel jet should have been giving me plentyyyy of fuel. I know its pulling fuel because the fuel jet is covered in gas after a pull. I've checked. I need to get a fuel pressure gauge but a 100 shot on a cam only car shouldn't be having fueling issues.
06-18-2018, 05:30 PM
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That is the AFR on spray. I can't check it on motor because the gauge will cut my nitrous off if it doesn't sense enough bottle pressure and the only way for it to see that is by turning the bottle on lol. Right before it starts spraying, it's like a 12.5-12.7. It does fine on motor. And yeah I'm pulling timing with the LNC2000.
06-18-2018, 05:37 PM
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That is the AFR on spray. I can't check it on motor because the gauge will cut my nitrous off if it doesn't sense enough bottle pressure and the only way for it to see that is by turning the bottle on lol. Right before it starts spraying, it's like a 12.5-12.7. It does fine on motor. And yeah I'm pulling timing with the LNC2000.
06-18-2018, 05:40 PM
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So it runs leaner on spray vs motor. Yeah thats all wrong lol. When you check fuel pressure get it off the rail. That will be the most accurate. Something is failing for you to be leaner on spray over motor. For instance I'm around 12.2-12.5 on motor and around 11.8 on a 150 shot. Is the car breaking up or anything odd?
06-18-2018, 05:44 PM
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Ok well do yourself a favor and don't spray the damn thing for now lol. Seriously though, if that AFR is truly right, you could easily lose the motor fast. Stock internals can't take much abuse
06-18-2018, 05:46 PM
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Yeah I'm not spraying it until I figure out what the hell is going on. Theres no explanation other than losing fuel pressure so what would cause that? This pump is like 3 months old
06-18-2018, 05:51 PM
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There may be other possibilities but i can't think of any at the moment. If the kit is setup properly and it's functioning right then it sure sounds like a fuel pressure issue but who knows. If it were me id head over to Autozone tonight, and get a mechanical fuel pressure gauge, and see what the hell it's doing. Starting there is paramount
06-18-2018, 05:54 PM
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There may be other possibilities but i can't think of any at the moment. If the kit is setup properly and it's functioning right then it sure sounds like a fuel pressure issue but who knows. If it were me id head over to Autozone tonight, and get a mechanical fuel pressure gauge, and see what he'll it's doing. Starting there is paramount
06-19-2018, 11:48 AM
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Do you have a hand held tuner or HP Tuner installed on a laptop? Wondering if you could look at the fuel pressure that way...maybe even trend it. I have an interceptor gauge on my A-pillar that reads all the computer parameter via the OBD-II port and fuel pressure is an available parameter.