Tuning help
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67 ford f100s rule
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Tuning help
I am at the end of my rope. I swapped a 351w in place of the original 302. It's out of a 1978 f150. It has a 600 edelbrock cars and 4 barrel intake. I also installed an HEI distributor. The truck will run but it back fires off idle and feels gutless. I remember my high school shop teacher teaching it, but I can't remember much from that class. Hopefully some of you guys that have been doing this for a while can help me out.
Jeff Penland
70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
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DuckRyder
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Re: Tuning help
Have you verified the firing order, 302 and 351 are not the same (with some exceptions).
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)
"An unarmed man can only flee from evil, and evil is not overcome by fleeing from it." -- Jeff Cooper
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67 ford f100s rule
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Re: Tuning help
Yeah firing order is correct. The engine acts like it wants to even out at idle but when you put any throttle to it under load it backfires. I am wondering if it's a vacuum advance issue.
Jeff Penland
70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
70 Ford F100 LWB "Nadine" 302/3 speed with overdrive
If you have to ask you wouldn't understand
"I shall hold the line of right as well as that of glory." English translation of the British Penland coat of arms.
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Lee
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Re: Tuning help
Have you looked at the timing curve.
What is the initial (idle) timing set at?
Is the carb's accelerator pump setup right?
What is the initial (idle) timing set at?
Is the carb's accelerator pump setup right?
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colnago
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Re: Tuning help
Is your distributor out of phase? Are you igniting on the exhaust stroke?
Joseph
Joseph
"Sugar", my 1967 Ford F250 2WD Camper Special, 352FE, Ford iron "T" Intake with 1405 Edelbrock, Duraspark II Ignition, C6 transmission, front disc brake conversion.
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calipilot227
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Re: Tuning help
Sounds like the timing is late. Is the vacuum advance working?
My Ford: 1970 F250 Camper Special (360, C6, 2WD, drums all around)
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
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Ren
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Re: Tuning help
'78 F150?
You may have a 351M
You may have a 351M