lt1 58mm intake porting ??
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From: mesa,arizona
lt1 58mm intake porting ?? has anyone ported there lt1 intake themselves to fit a 58mm throttle body if so what steps did you take what tool ?? mine is still on the car so i was thinking of using my dremel to port it using the throttle body gasket as my outline any tips will help thanks
You can do it yourself if you're competent with a Dremel. However it is MUCH easier to do if the manifold is off of the car. If you do it while it's on the car you run the risk of getting metal shavings into the intake. No matter how well you plug the holes you're still probably going to get some in there somehow.
You can do it yourself if you're competent with a Dremel. However it is MUCH easier to do if the manifold is off of the car. If you do it while it's on the car you run the risk of getting metal shavings into the intake. No matter how well you plug the holes you're still probably going to get some in there somehow.
I did mine. if you use an air gun make sure you turn do the pressure you can remove a LOT of material in a quick amount of time... as I learned myself haha. metal shavings get EVERYWHERE. I had it hot tanked and pressure washed after I did it.
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o ok i found this he did a good job with it still installed
http://www.bfranker.badz28.com/96ss/58porting.htm
http://www.bfranker.badz28.com/96ss/58porting.htm
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about the porting o ok i found this he did a good job with it still installed
http://www.bfranker.badz28.com/96ss/58porting.htm
http://www.bfranker.badz28.com/96ss/58porting.htm
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Verdad Gallardo o ok i found this he did a good job with it still installed
http://www.bfranker.badz28.com/96ss/58porting.htm
http://www.bfranker.badz28.com/96ss/58porting.htm
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From: mesa,arizona
thanks guys im going to do it on sunday i will let you know how it goes and elliot thanks man but i dont plan on messing up if so im sol but im pretty good with my dremel its my favorite tool thanks tho buddy
I could use that... 
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I have yet to do it, but I plan on leaving it on the car and stuffing some oil coated rags down in there. I have a site bookmarked with a tutorial how to do it on the car. They use a dremel to do it, but I plan on trying a small engine stone hone to bore it out bigger.
as for porting yes its very easy. HOWEVER i would NEVER do anything to the intake when its on the car. the risk of having aluminum shavings drop into the cylinders is to great to chance it. pull the intake. port it and get it sand blasted. then paint it and your good to go. im in the process of doing this myself along with port matching the gaskets and then possibly powder coating it when i do my cam.
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From: Decatur, TN (N-W of Athens)
i believe its 48 mm aswell.
as for porting yes its very easy. HOWEVER i would NEVER do anything to the intake when its on the car. the risk of having aluminum shavings drop into the cylinders is to great to chance it. pull the intake. port it and get it sand blasted. then paint it and your good to go. im in the process of doing this myself along with port matching the gaskets and then possibly powder coating it when i do my cam.
as for porting yes its very easy. HOWEVER i would NEVER do anything to the intake when its on the car. the risk of having aluminum shavings drop into the cylinders is to great to chance it. pull the intake. port it and get it sand blasted. then paint it and your good to go. im in the process of doing this myself along with port matching the gaskets and then possibly powder coating it when i do my cam.
And yes, any foreign debris in the motor isn't a good thing, but you can plug the intake quite well with cloth and the oil then is used to catch the rest of the shavings. And even before removing the cloth, stick a vacuum in there
You pretty much have to look at it like this: Risk some aluminum shavings in the engine, or risk the intake that isn't currently leaking to start after either an improper reinstall or the common issue of leaks at the back from EGR heat.
Port matching the intake doesn't do anything unless you port match the heads as well. And if the now ported intake is larger than the heads, you create some HORRIBLE turbulence right before it (air) enters the cylinders, which is bad heh
Here's the link I was referring to, and totally forgot about till I saw the thread again haha
http://www.bfranker.badz28.com/96ss/58porting.htm
If your car is still a 350 there is no need for a 58mm tb. a 52 is just fine for stock cubes.
If you do decide to port the intake please take it off or just trash a motor for 20 mins worth of work.
the floor of the intake is acually lower than the heads so gasket matching just makes the angle too miuch.
If you do decide to port the intake please take it off or just trash a motor for 20 mins worth of work.
the floor of the intake is acually lower than the heads so gasket matching just makes the angle too miuch.
