Edelbrock intake/carb install
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Joined: May 2003
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Edelbrock intake/carb install
I have a 1977 F150 with a 315m set up with the stock carb. I would like to install a Edelbrock prefermer intake and a 1405 600 cfm prefeormer carb on it. I have read that this set up will cause the motor to ping when accelerating. This will be a non EGR set up, will this work. Can you eliminate the pinging by staying with the stock distributor and fine tuning. Or will it always ping depending on throttle position. I haven't purchased the components yet just wondering if it's worth it?
Posting Legend
Joined: Sep 2001
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Edelbrock intake/carb install
The pinging is caused by the lack of the EGR gas in the mix and the fact that the stock ignition advance curve is set up to accomodate the slower burn time of the Exhaust gas mix. The engine will ping because you have too much advance at certain light throttle cruise applications without EGR. You may be able to adjust your vacuum advance module to compensate, or you can run an aftermarket distributor for non-EGR applications. If you back off your initial advance to reduce the pinging your engine will be running without enough advance at other times and will not perform properly.
Good luck with your Edelbrock performer parts.
Good luck with your Edelbrock performer parts.
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Joined: Aug 2002
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Edelbrock intake/carb install
is it not true... no cat no egr... my 1980 F-350 w/ 400 emissions sticker reads non-catalyst.... could it be that folks with different results are starting with different set-ups... I just put the 1405 carb on my existing non-egr performer intake (replace tired Holley, no time to fool with it) and I have no pinging at all... 
Lead Driver
Joined: Nov 2000
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From: Albuquerque
Edelbrock intake/carb install
This relates somewhat to altitude (I'm a mile high) but when I put the Performer and Holley on my first 351 with a small cam I could not make it ping no matter what I did (on regular gas). Just not enough stock compression.
Even with way too much advance.
Even with way too much advance.
Last edited by beartracks; May 13, 2003 at 10:52 AM.
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Edelbrock intake/carb install
Your altitude is giving you a slow burn condition just like if you had EGR on all the time. I have driven a vehicle from KC up into those mountains and was amazed at the lack of power that altitude made. You guys up there need superchargers 
When your stock distributor was set up for an EGR system if you remove it the engine will ping. This assumes that the engine was timed properly for use with the EGR.
When your stock distributor was set up for an EGR system if you remove it the engine will ping. This assumes that the engine was timed properly for use with the EGR.
Last edited by Torque1st; May 13, 2003 at 03:50 PM.
Senior User
Joined: Sep 2002
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From: United States
Edelbrock intake/carb install
I have that setup on my 70 with a 302.
I've adjusted the **** out of it and it still pings like a friggin slot machine.
Larry
www.larryscars.com
I've adjusted the **** out of it and it still pings like a friggin slot machine.
Larry
www.larryscars.com
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