I am really beginning to loose it. I have hooker shorty headers and my stock style starter just WONT start the car when it gets really hot. I know I have just over 10:1 CR, but still, it should start it without much problems. It has alwasy done that, but never that bad. SO I thought the starter was going, changed it. STILL the same problem. I am going to check my ground (to the block) today, but I don't think that is what it is. The battery is fine, its new, plus it has done it with EVERY battery I had. I can't handle it anymore, please help!!!

P.S. I ran a starter blanket, that didn't do anything! Pulled the timing right back, nothing there either.

 

Did you try wrapping your headers and starter???? Just a thought...I have never had that problem "knock Knock"

Later

 

i have hooker long tubes(uncoated and not wrapped) and i use the dinky 4.3L s10 starter with no heat shield. haven't had any problems. that tiny starter is a mile away from my headers. maybe try one of those.

 

You, my friend, are in need of a high torque mini starter. Yeah, it's a few bucks more but you will NEVER have hot start problems again.

Compression is only one reason why the motor is difficult to turn over. Initial timing advance is another big culprit and can make a BIG difference in otherwise identical motors. Assuming you don't have it over-advanced, nothing but a stronger starter will do. The most you can really run is about 10-12* initial advance before the motor gets "stubborn" when hot. Big cubes or just a "tight" short block can also contribute to hot start difficulty.

I've also tried all the blankets and shields with no improvement. They make the starter last longer in the heat, but they do nothing for hot start problems.

I swear you will not regret the upgrade.

 

That is what I am going to end up doing. What starter did you use and how much? The LT1 starter stock is a pricey, high-torque mini thing and it works awsome. That motor has stock, true 10.3 CR. You can run upto 12 on pump gas, and I am going to when I get myhands on that thing!

 

You just need a remote starter kit from Summit Racing. It is only like $25. I promise it will solve your problem. Just contact summit and search for the remote starter kit.

Tim

 

I think what he is refereing to is a remote starter SOLENOID. not remote starter w/a transmitter. just thought Id clear that up.

also, I have a 355 w/about 10.3 CR also and have 18* initial advance in my MSD distr. w/only mech. adv. of 20* to total 38*. no vacuum advance. but I have a LT1 starter on my 1975 350(yes, the one in my Iroc). all you gotta do is get a small diam. flexplate and it bolts right in. it never has a hard time turning over my eng. you should be able to get one used pretty cheap. but, for simplicity sake, id get a remote solenoid or a new high torque ministarter.
chris

 

Yeah, that is what I meant, thanks for clearing that up.

Tim

 

I am gonna order one from Jegs today (remote kit), for that kind of money, its worth it