I just had a new motor put in. Its a 350 TPI. When the new motor went in I added Edelbrock headers. When the motor heats up it won't turn over or its very slow. After it cools down it will start right up. So far I've changed the starter three times, installed a new 800 cca battery, moved the solenoid to the firewall and wrapped the starter in a shield. It still dosent help. The only thing left is to wrap the headers. I got one of those high torque mini starters but it wont fit(for an auto I have a 5 speed). If I get the correct fitting one will that work? Jegs also has a bolt on heat shield, does that help? What else can I do? I posted on the cooling board and got 0 response. Thanks

 

Go with the correct Mini-Starter and that will cure your problem.
The heat shield will not fit so don't waste time on it. The Mini is the way to go, it worked for me after my 350 awap with SLP headers and heat soaked stock starter.

 

Thanks for the reply. Anybody know what starter will fit? They all say they fit every sbc/bbc ever made! Some say they are offset. will an offset one fit? A starter for a 1984,85 305 with a 5-speed will fit. Thanks.

 

Anyboby using a high torque starter for a 305 with a 5-speed?
Need help to find the right one. Thanks

 

How good is the motor painted under the ground cable? CK all your grounds,cause that sure sounds like whats going on.I doubt 3 brand new starters will all have instant heat soak problems.

 

Good point but why would it have no problem when its cold?

 

Poor grounds are worse when hot,esp on a starter.You are working it harder,BECAUSE of the heat soak,and it just doesnt have enough OOMPH when hot.At the shop when cking chassis ground problems I turn on all accessories etc to ck.When the circut is loaded hard is when the problems occur on a poor ground

 

Well that's easy to check so I will try that today. Thanks

 

Well I just tried the ground. Thats not it! I had my hopes. What about a mini starter? Anybody have even a guess? Thanks

 

I just went through this same thing for a month or so....tired EVERYTHING!!! I finally solved my problem w/ a remote starter from jegs ($25). I tried a heat shield because everyone said it works wonders, but it didn't work for me...but the solenoid did.
try all the grounds and wires of course...and then get the car to act up (not start) like it has been, and check the starter connections w/ a volt-meter...see if you're getting 12 volts to the starter...(12 volts to the battery cable connection at all times, 12 to the other connection when the key is turned) if you're getting 12 volts, then it's the solenoid, if you're not, then it's something else. good luck.

 

I already installed the solonid relocation kit from JEGS. Checked my FP and it was way up around 58lbs. turned it down to 46 but no help. The only thing left is a mini starter I think. I'm thinking of lighting my car up if this can't be fixed. POS.

 

HAHA....i was "this close" to lighting my car up untill i fixed it. If the solenoid didn't fix it, i'm pretty sure a mini starter wont. Because it's not the starter that has the heat soak problem, it's the solenoid....so if relocating the solenoid didn't fix your problem, then it's more than likely not heat soak. I'm sure you've done this, but go over all the wires real good. Could be a wire somewhere, ignition switch, kill switch if you have an aftermarkey alarm. If you haven't done this...get a volt meter....when the car isn't starting, hook it up to the battery terminal on the solenoid...you should get 12 volts whenever the ignition is on. Then put the meter on the other little terminal and see if you get 12 volts when the key is turned. If you dont get 12 volts to them, then it's not the solenoid, it's something before that. Good luck.