Having trouble starting motor after I drive it awhile,can jump it & it will start
Do I need a starter?

What is the motor you have and what application? Big blocks were known to have a heat soak problem with the starter being so close to the exhaust manifold. You may want to make sure that you have a heat shield for your starter solenoid or starter, get new battery cables, check your battery cranking amps, check out your starter to make sure it is still good and not damaged from heat or age, and also check that your grounds are good. There is a company that makes a remote solenoid for chevy's but if you are going for a stock appearance, that will not work. One last thing that it could be is your timing could be a little too far advanced as my 70 SS 396 motor is very touchy with this sort of thing. If the timing it just a hair too far advance, it will almost bind up when the motor tries to start. Good luck with this as it is a constant problem as I have seen on here.

Thanks, the motor is a 454 it has about 50 miles on it cable are new.
do they make heat sheilds&where can I get them?

Very good advice Resq302. I also agree on checking the timing, the 350 in my Chevelle developed hot start problems even after having a new starter installed and it turned out that the timing was to advanced, after adjusting the timing the hot start problems went away.

Hi there...

Last summer my car started doing the same thing. I fixed it, with help from these forums, by doing a couple of simple things.

I cleaned my NEG battery cable's mounts, whether brackets or engine block with a drill-mounted wire brush and cleaned the threads for the bolts. Also cleaned the ground strap between fender and NEG battery.

Replaced worn, frayed starter wires going to the solenoid.

Cleaned wires and contacts at the horn relay.

And since I already had one, installed a new ignition switch that's mounted on the top of the steering column under the dash (I was under there replacing 2 cluster bulbs that were burned out).

Also, use the SEARCH function and type "heat soak" or something like "start hot" or "voltage drop" and you'll find alot of help. Heat soak is really a voltage drop problem, so you've got to find the source of the drop. An aggrevating, embarrassing problem, but one that's pretty simple to fix once we figure out what to look for...good luck