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#1
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302 or 351W
I have purchased a 70 mustang with a 351w out of a ford torino. The
car starts up and moves but was back firing out the carb as well as falling on its face after a short distance. The car smells like its running rich I was thinking that the car was loading up and that the timing was off. After messing with the car some more I found that the spark plug fire order was off. So I changed the order to what a 351W was calling for and yes I went counter clockwise on the cap. Although that didnt do a thing for me. after I changed it it would not start at all... So I thought Maybe I have a 302. So I tryed the fire order for the 302 and It fires over. although it hasnt back fired since out the carb, it still smells like its running rich or possibly running to much fuel. I investigated further and looked up the part number on the Intake manifold and it came up as 351 exclusively.... so my next question would be WTF! how does a 351 fire on a 302 fireing order, and if it is a 302 why or how did someone put a 351 intake manifold on it? I am about to loose my mind.. As of now with the 302 fireing order, I place the car in gear and it basically loads up... looses power Any suggestions? |
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#2
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302 or 351W
A 351 intake will not fit a 302. Assuming it is a 351W, the firing
order should be 1-3-7-2-6-5-4-8 - I assume you understand how Ford numbers the cylinders (1 2 3 4 front to rear on passenger's side, 5 6 7 8 front to rear on driver's side). Ed > wrote in message ... >I have purchased a 70 mustang with a 351w out of a ford torino. The > car starts up and moves but was back firing out the carb as well as > falling on its face after a short distance. The car smells like its > running rich I was thinking that the car was loading up and that the > timing was off. After messing with the car some more I found that > the > spark plug fire order was off. So I changed the order to what a 351W > was calling for and yes I went counter clockwise on the cap. > Although > that didnt do a thing for me. after I changed it it would not start > at > all... So I thought Maybe I have a 302. So I tryed the fire order > for > the 302 and It fires over. although it hasnt back fired since out > the > carb, it still smells like its running rich or possibly running to > much fuel. I investigated further and looked up the part number on > the > Intake manifold and it came up as 351 exclusively.... so my next > question would be WTF! how does a 351 fire on a 302 fireing order, > and > if it is a 302 why or how did someone put a 351 intake manifold on > it? > I am about to loose my mind.. > > As of now with the 302 fireing order, I place the car in gear and it > basically loads up... looses power > > Any suggestions? |
#3
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302 or 351W
Dont know about the 302/351 distinction, but a friend did a valve
job on a Bronco 351 . When he put it back together he did the firing order as labeled on the intake. It backfired, etc. A mobile mechanic came over and said the firing order on the intake was incorrect. He redid the wires and it ran fine. I always wondered about that. G |
#4
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302 or 351W
On Apr 28, 5:08 pm, Gene Wagenbreth <genewxxx@isi-OS4> wrote:
> Dont know about the 302/351 distinction, but a friend did a valve > job on a Bronco 351 . When he put it back together he did the > firing order as labeled on the intake. It backfired, etc. A mobile > mechanic came over and said the firing order on the intake was > incorrect. He redid the wires and it ran fine. > > I always wondered about that. > > G Ford changed the firing order of the 302 to the 351W firing order. Really all they did was change the camshaft and it only changed the order between two cylinders. I've been told they did it because over the years a lot of engines were ruined because of crossfiring between the plug wiring that would cause preignition on the firing order of the old 302s. Can't say for sure that it is true though. The OP has me puzzled unless somebody actually put an older 302 camshaft into a 351. |
#5
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302 or 351W
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#6
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302 or 351W
Blown power valve?Timing slipped?Which carb?Elec ign or points?Duraspark
ignition? > wrote in message ... >I have purchased a 70 mustang with a 351w out of a ford torino. The > car starts up and moves but was back firing out the carb as well as > falling on its face after a short distance. The car smells like its > running rich I was thinking that the car was loading up and that the > timing was off. After messing with the car some more I found that the > spark plug fire order was off. So I changed the order to what a 351W > was calling for and yes I went counter clockwise on the cap. Although > that didnt do a thing for me. after I changed it it would not start at > all... So I thought Maybe I have a 302. So I tryed the fire order for > the 302 and It fires over. although it hasnt back fired since out the > carb, it still smells like its running rich or possibly running to > much fuel. I investigated further and looked up the part number on the > Intake manifold and it came up as 351 exclusively.... so my next > question would be WTF! how does a 351 fire on a 302 fireing order, and > if it is a 302 why or how did someone put a 351 intake manifold on it? > I am about to loose my mind.. > > As of now with the 302 fireing order, I place the car in gear and it > basically loads up... looses power > > Any suggestions? |
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