Fueling & Injection - Stock fuel lines, max flywheel HP?
06-17-2012, 11:11 AM
What's the max flywheel HP the stock lines will support. I should be around 550 RWHP. That is through TH350 W/ 5400 stall and 9". So I'm figuring close to 700 FWHP.
06-17-2012, 01:11 PM
3/8 line will support 1k horsepower
06-17-2012, 07:37 PM
The stock fuel lines/regulator configuration will support approx. 700rwhp.
Above that level you need to add a front mount regulator & a return line.
06-17-2012, 08:54 PM
The most I ever got out of my stock setup was 525 rwhp with a boost a pump/hotwired. I probably would have got more out of it if I had a front mount regulator/return line. My stock fuel system was dropping a lot of fuel pressure when I got into boost from 60 psi to 40-25. It also seemed like the fuel got extremely hot and I was changing out pumps every few months. It got to the point I had to cut out a trap door. :(
06-17-2012, 08:58 PM
Now with my new block (AES 390) I'm installing Lonnies double pump system which I'm currently installing. I did not want to be messing with the fuel this time around so I'm doing it right this time!!
06-19-2012, 10:47 PM
i have made 580 on a mustang dyno with just a single walbro 255 no boost a pump using my own wiring on 12psi. if you're having trouble change your fuel filter.. i changed it before my dyno session and had to dramatically reduce my ve table hahaha. stock fuel system is awesome. i have run it up to 18psi on the single 255 pump and was still upper 11's afr, probably close to being maxxed but still works like a champ. I added methanol and its down mid lower 11's with the methanol on. i have my stock pump hooked up to piggy back but have yet had the need to turn it on. sometimes things ls1tech says wont work, will.
fwiw on 17-18psi i went 104 mph in the 1/8th with ~3900lb raceweight, and spinning to mid track lol. im sure with a good launch and good traction would have gained a few mph., track is cheap and doesnt want to spray compound. as long as the drag cars are hooking they dont care.
just for shits heres the run notice the spinning lol. 2 bar map sensor is maxed haha
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