NA low 11s ~470rwhp to 9.xx ~700-720rwhp Procharger ?

[deanm11]

I built my 2020 FBO on Ethanol (and am reassembling my 2022 with same build) and achieved ~470rwhp and in cool air ran 11.26 @ 126 with a modest ~1.85 60ft.

I've got a stage 2 procharger on the shelf. Assuming I hit 700-725rwhp, from observing centri power graphs, I would be at least +200 rwhp in the rev sweep range from approx. 6500-7700rpm.

If I gain less than 100lb in weight, what should 11.26 @126 translate to? At lower power levels, 10hp = 0.1/1mph. If it's 2/3 of that improvement at this power level, that's say 9.85 at 138-139, in theory without a monster launch. Why does it seem most people need 800rwhp at least to run that kind of time? (I am a light no option car)

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[80FoxCoupe]

Most do not optimize thier setup, therefore requiring more power than needed to run a certain number. This mode of operation also produces a false assumption of what a specific combo should run. Example, I've been 9.01 at 150 with a p1sc. Most combos running that are much more powerful.

 

[Cory S]

Don’t forget, it’s always harder actually running the ET you think it should run..

 

[deanm11]

Well that's for sure. I've raced on and off for over 30 years, just not at the 700rwhp power level. I guess I'm more curious about what the metric of power to ET improvement is as you move up in the power range I'm looking at and where are the places it gets lost in practical reality - wheel spin, short shifting, suspension not working as well as lower power levels ..?

 

[schmeky]

If it's a true street car, you'll have to make some compromises.

But from my years of past experience with a street driven weekend drag racer, the single most important aspect is traction, which involves:

1. Right tire selection
2. Optimal strip tire pressure
3. Burn out technique for the tires you select

Race is won or lost off the line as are optimal 1/4 mile time slips.

 

[4V Mayhem]

You should have the power to run at least mid 10s.

 

[80FoxCoupe]

Well that's for sure. I've raced on and off for over 30 years, just not at the 700rwhp power level. I guess I'm more curious about what the metric of power to ET improvement is as you move up in the power range I'm looking at and where are the places it gets lost in practical reality - wheel spin, short shifting, suspension not working as well as lower power levels ..?

The more power you make, more effort and parts are needed to accommodate. 720whp will be easy for you to optimize given your extensive racing experience. I think the biggest thing that is a roadblock for many is support. No drag racing pals to bounce ideas off of, or crappy prep at the strip. Then loss of desire. This isn't a streetcar anymore, wife angry, spending too much etc.

 

[deanm11]

Thanks for the views on this. I aim to see if I am truly in the 11.30s or so NA first like I was with the 2020. If so, I'd be pretty disappointed with mid 10s with say 720rwhp, in good air.

 

[SolarFlare]

remember, bulk of the centrifugals power gains are up top, so you need to get up there and stay up there. Also, the faster you go, the harder it becomes to go faster, everything just needs more attention to details. if you gain 200whp but your 60ft doesnt change then drag strip gains will be limited.

 

[drive_55_not]

Thanks for the views on this. I aim to see if I am truly in the 11.30s or so NA first like I was with the 2020. If so, I'd be pretty disappointed with mid 10s with say 720rwhp, in good air.

Here's a slip from Rockingham back in July, 90 degrees miserable in them sandhills .

Left lane is a Gen3 Vortech, He had Weld beadlocks, No idea what his full setup but, as you can see, he was rolling.

I'd presume he had a smaller pulley and it smelled like he was running corn.

A base Vortech @700rwhp should run 10,3xx's from what a local guy was running back in 2019.

He had a vid up on the Yootube but it looks like he deleted his channel.




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[Cory S]

Here's a slip from Rockingham back in July.

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