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#26 |
At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,212
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Re: Done with EFI, back to carb
Analog ftw or
K.I.S.S
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" That didnt make it any newer " " Dont antique the equipment " |
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#27 |
Registered User
Join Date: Jan 2009
Location: colorado springs
Posts: 479
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Re: Done with EFI, back to carb
Parts came today
AVS 2 650cfm , performer intake, mechanical fuel pump, went ahead and purchased a new cam to match, since the O2 bung is in place I’m adding an A/F gauge ( which is handy at 6000 feet. Gotta work this weekend but I should be done with the swap sometime next week. |
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#28 | |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,090
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Re: Done with EFI, back to carb
Quote:
-klb
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#29 |
Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: Done with EFI, back to carb
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#30 |
Senior Member
![]() Join Date: Mar 2011
Location: Hanover NJ
Posts: 4,160
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Re: Done with EFI, back to carb
I was about to jump into this Sniper Kit saving my nickles , you guys just saved me a sizeable amount of cash and more important the stress and time wasted ...thanks to all ill stay old school until I do the LS swap on the next one
__________________
Doc & Kim build http://67-72chevytrucks.com/vboard/s...d.php?t=722288 I am from the desert http://67-72chevytrucks.com/vboard/s...d.php?t=650332 basket case build SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=648557 |
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#31 | |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,505
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Re: Done with EFI, back to carb
Quote:
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#32 | |
Registered User
Join Date: Jan 2013
Location: Buffalo Gap, TX
Posts: 222
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Re: Done with EFI, back to carb
Quote:
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My Chevy Truck Project Build Thread '62 Ranchero - 200 I6, 3-on-the-tree, power nothing. '71 LeSabre - 455 Stage 1, power everything. |
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#33 |
Registered User
Join Date: Jan 2009
Location: colorado springs
Posts: 479
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Re: Done with EFI, back to carb
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#34 |
Registered User
Join Date: Jan 2009
Location: colorado springs
Posts: 479
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Re: Done with EFI, back to carb
So glad to be done, AVS 2 carb
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#35 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Done with EFI, back to carb
Curious on your setup, What are you running with both vac lines hooked up?
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#36 |
Registered User
Join Date: Feb 2019
Location: Centurion, Gauteng, South Africa
Posts: 228
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Re: Done with EFI, back to carb
My 2c worth:
I have extensive experience with Megasquirt on V8 and V12 engines. Many DIY EFI tuners rely too heavily on the O2 sensors doing tuning for them. When I tune my engines, I use a wideband sensor to tune my fuel maps so well that the engine can run very well "open loop" - without O2 sensor. In some cases I leave the O2 sensor active for "closed loop" but then the O2 sensor only has to do the last 3% or so fine tuning. The other mistake often made is that current limit resistors are used with low impedance injectors. This is fine for racing but very bad practice for road cars that spends a lot of time at partial throttle (small pulsewidths). The effect of intake air temperature is often also underestimated (ignored), not to even mention barometric pressure (latter plays a massive role on normally aspirated engines). Bottom line: If you DON'T know your stuff with EFI, you most likely WILL be better off with Carb. Now here's a curved ball....? Most carbed engines are more in need of mapped ignition than EFI (Something like Megajolt) .... ![]() |
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#37 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Done with EFI, back to carb
The only thing worse than a misconfigured EFI is a Q-Jet missing a few parts! :-)
My Sniper runs really well. I do have to dial in the "accelerator pump" after changing my linkage, but otherwise it's perfect. My blue truck runs the factory Q-Jet with ALL factory equipment (heat risers, thermac, etc) and it runs well enough. A good carb or good EFI is great, but living with a bad version of either sucks.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#38 |
Registered User
Join Date: Jan 2009
Location: colorado springs
Posts: 479
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Re: Done with EFI, back to carb
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#39 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Done with EFI, back to carb
Thanks for the info, I kinda figured it was something simple. I was hoping to figure out some tidbit of gold that no one else knew about!
Eddy wanted me to buy one of those last time I spoke with their tech department. It has been 10 years since I put one on my truck and has been trouble free since install. Granted its not a AVS. And thats with ethanol! Yikes! |
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#40 | |
Registered User
![]() Join Date: Oct 2018
Location: Tiffin Ohio
Posts: 74
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Re: Done with EFI, back to carb
Quote:
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