sbc issue, need help!

[Silent viewer]

we are planning to get to it this weekend, im going to start by losening the valves 1 half turn and see what that does. just need time!!

 

[JESSE]

did you prime your engine? i don't know what method you use to adjust the valves, i use the chevrolet recommed way of setting them before installing the motor. i prime the motor until oil comes out of the pushrods and then adjust them by bringing up number one compression stroke,then adjust the eight valves and turn the engine over one time so that number six is up on compression stroke then adjust the last eight if your interrested i'll send you the sequence..... jesse

 

[TBRtat2]

I would check to make sure that the valves are closing properly, one way to check is to roll the motor to top dead center on the compresion stroke pull the spark plug and blow air into the cylinder, make sure you get a good seal on the spark plug hole, Listen the the intake and exhaust for air coming out.

Also make sure the rockers are not holding the valves open, not all cam, lifter, push rod, rocker combos are the type you just tighten (like stock ones are) some you have to set with a feeler gauge. so make sure there is not to much pressure on them, they should have some movment when the lifters are all the way down.

If that all checks out, that most likely means you have you cam timing. (are you positive that ur not 180 off between the cam and crank?)

Also 1 other thing, are you sure that the heads are seated properly the the head gasket and block? what type of head gasket did you use

 

[ss4ever]

we are planning to get to it this weekend, im going to start by losening the valves 1 half turn and see what that does. just need time!!

Don't just leave us hanging, what did you find??????

 

[Silent viewer]

well we have not had time to get to it yet.... too damn busy with work and life! it kinda sucks! i will keep you guys posted as we figure it out

 

[Silent viewer]

finally got to work on her! figured it out! the lower cam gear was set at -4 which i would have never thought would cause no compression?? anyways we put it back to zero and cranked it, got a back fire, flipped the distributor 180 and it fired right up! now we just need time to get in there and tune it, too bad the summer is already over! he told me tonight that he is planning to drive it a little before snow and then we are going to start the body work and plan for paint and wheels by spring time. now time to get my motor together and painted, basically a ram jet 350 but with a holley stealth ram ran off a tpi computer and harness, im excited!

 

[JESSE]

sbc

glad to hear you got it figured out, with all you learned on this motor it ought to be a lot easier on your motor.... always remember that when you time your chain dot to dot the motor is not on #1tdc it's on #6 tdc!!!!
if you want to avoid a lot of grief on start up you can follow chevy's method of building a engine an adjusting the valves so you don't have to try doing the valves on start up, you should always prime your motor while it's on the engine stand....if you've got any questions just hit me up....jesse 😀

 

[Silent viewer]

I just noticed that i called the timing gear a cam gear. it was primed properly we just happened to get the wrong key way on the crank timing gear. i guess we shouldnt drink so much beer while building motors lol, oh well, it gave us a reason to drink more beer lol. i will get pics up soon of the final product