low compression 548 dyno testing has begun!!
#162
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From: frankenmuth michigan
#164
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From: frankenmuth michigan
His idea is air will pull fuel thru the slots/feeds he built into the venturis. Before ever building the first complete main body he experimented with the design and adjusted things to get proper signal/fuel curve or draw. The design works when we tested it on dyno, it doesnt, however, out perform or keep up 100% with his modded 4150 that does so well, still in the experiment stage.
#165
Pretty cool stuff!!!
Just a hunch but I wouldn't be surprised if the carb makes a little bit more torque and HP.
Biggest complaint I have with EFI engines is the lack or torque feeling at higher rpm where their carved brethren seem to be better IMHO.
I like EFI for the safety factor the most and I'm learning more and more about tuning every day!
Just a hunch but I wouldn't be surprised if the carb makes a little bit more torque and HP.
Biggest complaint I have with EFI engines is the lack or torque feeling at higher rpm where their carved brethren seem to be better IMHO.
I like EFI for the safety factor the most and I'm learning more and more about tuning every day!
#166
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From: frankenmuth michigan
I been bolting and fitting efi stuff on dyno a hour or two a day, using mefi, was going to use a mefi 4 harness and ecu as its already hacked up BUT i have a virgin mefi3 harness that seems to reach everything with very little mods, flowed and checked new injectors, they match well and are good to go, luckily a gm tps and iac bolt to the 2200 cfm throttle body, after looking at rons holley and seeing a extra wire on tps i started thinking i was fukked as far as tps but as long as it sweeps from .5 volts to 5 volts when i test it im goid to go. I expect to pick up some tq with ability to set timing tables vs the mechanical distributer we were running that had all timing in by 4000 but dont have high hopes of outperforming the good 4150 numbers as far as hp. Perf trends software shows a 20 hp increase over the 4150 and i wouldnt be surprised if it DOES make 20 more hp than the QF and both dominators as they didnt really break 660 hp with mufflers on but am not expecting to miraculously make 700 hp.
#170
That's for sure, anyone else would of probably just sent em back, Smitty knew I had some coin invested in these carbs and was bound and determined to make them work and did.





