Please help ...I have a stroked 75 351w i put in my mav.it has 302 heads 302 cam...now the problem is its turning over slow like timming is out .the rotor button is pointed to number one on the cap and i took the cover off the timming chain dots are lined up the crank is top and cam is bottom.Ive burnt up two mini starters trying to start this motor .Could the cam b out of time .If so how do i time the cam .Its been so long since ive been inside a motor ..Im lost please help me
Are you using the 351w/5.0 13726548 firing order or the older 302 15426378? If it a "302" cam you'll need to use the 15426378 firing order.
dist 180 out? i pulled it and rolled it till it fell in the hole pointing to the number one plug wire on the dist...the cam was suppose to b degreed when put in idk ans the battery is new and took the mini starter and had it checked and rebuilt.got it back friday .Then sat put it on turned over slowly and locked the starter up .....I dont know ..Never had a problem like this
Did you try having some one crank it while you advance or retard the timing? Can you turn the engine over freely by hand? Have you had this engine running before?
Ive cut the key on inside and jumped the cylenoid and turned the dist while trying to crank it ....Never had it running its a brand new engine
Once you verify that the engines crank can be spun with a breaker bar/ratchet through 360 deg of rotation...You need to verify your distributor is installed properly...#1 cyl on compression stroke at TDC, rotor pointing to #1 terminal on dist cap...Outside of that, be certain your battery is fully charged and the battery cables properly secured/mounted at the starter/battery...New engines sometimes are tight and dont like to turn over and will require a good strong battery to kick em off. If you cant manually spin the engine Something is jammed/broken...Flex plate/converter clearance issues seem to be a primary source for such problems. Good luck!!!
I can spin the motor over its hard with plugs in if i take the plugs out its easier i hope when i get the starter back AGAIN it will start im running out of time suppose to cruse it the 29th i really hope ill b able to
John, you cay that everything is where it should be when #1 is at TDC but is it possible you have your firing order on the cap backwards? Wrong rotation? Glad you found your way back to the forum
Do you have a vaccuum gauge? Put this in the number 1 cylinder spark plug port, Then crank the engine over till you get comprssion on this cylinder . This is top dead center. The timing mark should be at 0 degrees on the pointer. Check your marks on the timing chain now. This is what i do all the time rebuilding engines. I hope I helped you.
disable the spark. leave the coil wire off or unplug the distributor. how well does it crank that way?
