LT 1 350 valve to piston clearance

[randy wilson]

Originally Posted by TOSTO RACING

I think he is referring to don't let it get away from you on a burnout. People tend to over rev a car in the water box.

As for vtp like Alan said above .060 .065 exh would be as tight as I've ever ran and it was okay for me. The intake is more forgiving. if I were you I'd advance the cam and get yourself some more exh clearance and less int in my opinion if you are worried about it .

Good luck with it.

This^

[B Parker]

Hi Asking these questions I would assume your a newbie to stock. As Alan said did you check it the right way? In my younger years I might have run it with .060 but with the cost of everything today I wouldn't risk it. There are several ways to pick up that little clearance you need. I know it sucks but I would take the heads off and have a good machine shop cut .010 off the back of the valve. If possible move the cam a couple of degree's. What head gasket are you using? Have one custom made .05 larger but tighter on the bore so you don't loose compression. They don't cost that much. Good luck BP

[MR DERBY CITY]

Originally Posted by Ed Wright

I apologize. The Stock rules are different enough from when I ran Stock with that '56, I should have kept quite. About all he can do legaly is move the cam.

I don't get the remark about water?

No need to apologize Ed, not only do we look forward to it ..but we all appreciate your input. You are a lucky man to have raced in the junior stock era and still be more than competitive in today's Super Stock eliminator. In the Don McElroy era, he would bolt a dummy head on the motor and with the assistance of a BFH he would hammer the valve into the piston.

[Chipper Chapman]

I ran .050 on exhaust side in my 350/255. Keep burnout to 5500 or less and never had anything touch, at .040 they do.

[Kdw1403]

Originally Posted by Bob Gullett

Is that checked with checker springs or the regular springs?

It was with checker spring. I have since used my regular spring and it reads .080 with everything just like i am going to run it in the motor.I am new to stock. I raced super gas for years. Just dont know how far you guys push the envelope in stock eliminator.

[Kdw1403]

[QUOTE=B Parker;523488]Hi Asking these questions I would assume your a newbie to stock. As Alan said did you check it the right way? In my younger years I might have run it with .060 but with the cost of everything today I wouldn't risk it. There are several ways to pick up that little clearance you need. I know it sucks but I would take the heads off and have a good machine shop cut .010 off the back of the valve. If possible move the cam a couple of degree's. What head gasket are you using? Have one custom made .05 larger but tighter on the bore so you don't loose compression. They don't cost that much. Good luck BP[/QUOTE ] All of those suggestions are very easy to do. thanks for your input

[Woodfin]

I agree with the above post about giving extra clearance, being on the safe side. I know from recent personal experience flirting with "too close" just cost me about $9,000.00 and set me back a season.

[Bob Gullett]

Originally Posted by Kdw1403

It was with checker spring. I have since used my regular spring and it reads .080 with everything just like i am going to run it in the motor.I am new to stock. I raced super gas for years. Just dont know how far you guys push the envelope in stock eliminator.

I figured it would pick up some clearance with regular springs. .080 is quite adequate.

[RichScaz]

Check your PM.

[rawhide]

Originally Posted by Dan Fahey

Curious. Why more Clearance on the Intake vs Exhaust. ?

Dan,

The exhaust valve runs much hotter than the intake and expands more.

Roland