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Update on the coupe

Old 05-12-2018, 01:00 PM
  #41  
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Originally Posted by tug686spd View Post
I personally doubt you'll get it back. The carbs ability to cool the intake charge can't be beat for max power.
I think there are aspects of EFI that compensate and surpass carbs for power output
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Old 05-14-2018, 04:00 PM
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We are at 12.4:1, so there is power left. Just maybe not enough to matter. We will find out when I get some time. Flying to Indiana this weekend and won’t be back till the Friday after. Maybe the following Monday.
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Old 05-26-2018, 01:15 PM
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Convinced myself that the converter needs some attention. THE car doesn’t spin much. Typical slick spin, just a touch.
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Old 05-26-2018, 09:15 PM
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Originally Posted by ZONES89RS View Post
Convinced myself that the converter needs some attention. THE car doesn’t spin much. Typical slick spin, just a touch.
Convince yourself all you want but a carb pretty close to being dialed in is going to out run the same efi setup everyday. I will say the efi is much better for a street car which is why I run it. But if I had a track only car a carb would be sitting on top of it.
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Old 05-27-2018, 08:53 PM
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the EFI was slower over the cabs best. But not aslower than the carbs typical runs for Mph. Just ET. It’s been a decline and in the trans I’m sure. Car is not picking up ET on a 150 shot. That says enough.
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Old 08-10-2018, 01:37 PM
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Got the EFI getting close to the carbs best ET and MPH after some tuning. She starting to 60.
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Old 08-11-2018, 08:27 AM
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👍🏾👍🏾👍🏾
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Old 08-11-2018, 11:20 AM
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Awesome work, I'm just about to finish mine up. Can't wait to go down the track also.
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Old 08-12-2018, 04:56 PM
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The blasted rain is shitting on me today. I’m not gonna chance wasting my time going to the track. Weather man said no rain. Liar. Rained HARD while at church and on the way home.
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Old 08-13-2018, 01:41 PM
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Starting to 60, key words. If you would have had the same mods with carb as you do to the suspension, and converter, the carb would have again been faster. I think efi can run as good, and definitely better for a street car, but I don't think efi can outperform a carb. Consistently, yes I think it can as in varying weather conditions but That's the only advantage in my opinion. You know what they say.....lol
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Old 08-13-2018, 02:41 PM
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Yea, this will never run as good as the carb did, but it will be close. It’s best carb pass on slicks is about 1 MPH faster so far on motor.
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Old 08-20-2018, 01:30 AM
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I know she isn’t carbed anymore, but it’s moving quicker. Nitrous system is not very good. Jetted from 150 to 200 and only gained 1 MPH. Heard my NX kit did the same for a few others.

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Old 08-20-2018, 08:59 AM
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What intake? I know when I had a plate system after 250 I was having distribution problems and not pickings up as I should have. Was informed by 2 nitrous vendors here that LS1 LS3 style intakes have that inherent issue. They both rec port jnjection. I had a Fast LSXR 102 and a 2 stage Nitrous outlet plate system. So kept it at 200 range for a while.
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Old 08-21-2018, 09:02 AM
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It is a victor Jr. it’s a plate issue, so want to find a stinger. If not I may send it in for a puck kit.
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Old 08-23-2018, 01:50 PM
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so what's the theory on why a carb works better? same style intake, same style "throttle body", just a different fueling method. atomization? if that's the case, why are these new direct injection motors making so much power.
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Old 08-23-2018, 03:05 PM
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The emulsion effect is the claim by people paid more than me. The dense intake charge does wonderful things.

DI is awesome becage it’s sprayin the piston, so that may count for something, but longevity the DI engines are getting carbon built up and need cleaning. Where as ford has designed the DI and traditional injection working on a engine at different demands.
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Old 08-23-2018, 03:15 PM
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so run a meth injection system on EFI and have the best of both worlds?
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Old 08-23-2018, 04:44 PM
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It has been suggested. Lol. I’ll see about converting to e85. I need bigger injectors and a 20 gallon fuel cell. Would more than wake it up and help with the nitrous.
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Old 08-23-2018, 06:26 PM
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a little more compression with e85 is free power too. it kind of takes the street out of street car to me though. I've been asked a dozen times why I wont run e85 on the Camaro and my answer is because I want to take a road trip without plotting out gas stations that carry e85. i'll just run 100% methanol on top when in boost.
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Old 08-24-2018, 10:22 AM
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Yea, but you have not shown me any interest to be competitive where I find it something I should do to push the car harder.
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