302 problems

shelby85 · 06-29-2008, 02:57 AM

hello i have a freshly rebuilt 302 bored and stroked to a 347. it has a double roller timing chain, a healthy 351 cam, aluminum intake, elelbrock carb, roller rockers, msd 6AL ignition with stock distibutor. i just got it running and was trying to time it when i realized i have a dead number 5 cylinder. i have tried a differnt spark plug and wire. readjusted the valve lash and still no luck. its getting air fuel and has compression. has anybody had this problem before? its driving me nuts can anybody help? im open to anything at this point.
thanx

goodyear1984 · 06-30-2008, 06:32 PM

first did u change the plug wire? is the compression on #5 the same as the rest? are u using the right firing order?did u check to see if the rockers are moving on the #5 ...when adjusting the lash did u go zero lash the a half a turn? rember a engine needs 3 things to run fuel/air, compression,spark..

shelby85 · 06-30-2008, 09:57 PM

yeah i checked all that. i got it figured out today just for the heck of it i put the 302 firing order on it and it runs like a champ. i dont know how that works with a 351 cam but its workin and runs awsome

goodyear1984 · 06-30-2008, 10:42 PM

there is 2 different firing orders for the smallblock fords good luck

06-29-2008, 02:57 AM	#1
shelby85 Registered Member Join Date: Jun 2008 Posts: 2	302 problems hello i have a freshly rebuilt 302 bored and stroked to a 347. it has a double roller timing chain, a healthy 351 cam, aluminum intake, elelbrock carb, roller rockers, msd 6AL ignition with stock distibutor. i just got it running and was trying to time it when i realized i have a dead number 5 cylinder. i have tried a differnt spark plug and wire. readjusted the valve lash and still no luck. its getting air fuel and has compression. has anybody had this problem before? its driving me nuts can anybody help? im open to anything at this point. thanx

06-30-2008, 06:32 PM	#2
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: 302 problems first did u change the plug wire? is the compression on #5 the same as the rest? are u using the right firing order?did u check to see if the rockers are moving on the #5 ...when adjusting the lash did u go zero lash the a half a turn? rember a engine needs 3 things to run fuel/air, compression,spark.. __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

06-30-2008, 09:57 PM	#3
shelby85 Registered Member Join Date: Jun 2008 Posts: 2	Re: 302 problems yeah i checked all that. i got it figured out today just for the heck of it i put the 302 firing order on it and it runs like a champ. i dont know how that works with a 351 cam but its workin and runs awsome

06-30-2008, 10:42 PM	#4
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: 302 problems there is 2 different firing orders for the smallblock fords good luck __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

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