Red Intake Manifold?
Well from what i can see they are all 1.5rr's.. atleast on the drivers side... when i had it off i wasnt even thinking to look for a number or anything, i just wanted to take a peak and see what it looked like. For the sake of HP, My buddy has a 1998 z28 LS1 completely stock. m6. We raced on I-75 " no one was on the road" from a 40mph roll. By the time i hit 130 he was a good 6 car lengths behind me. Also raced him ABOUT a 1/4 mile. cant be exact but we drove from the traffic light and watched the tripometer and when it got to 2 1/2 we where able to pick a telephone pole that was right there.......... So we went back to the light. It turned green we both took off i spun a little " he said he didnt spin at all" when we got to the Pole i was about 2 1/2 lengths ahead. He said my exhaust was so loud he couldnt hear himself think. Im going to do my best to get it to a dyno very soon. by what i was just saying, any clues as to what kind of power i might be making with whatever is in this thing?
Originally posted by bad95formula
I ran a search on that part number and it came back as an oil filler cap so I dont think thats the part number your looking for. I honestly dont remember where the part number is casted on the intake. If you come across another possible part number, post it.
I ran a search on that part number and it came back as an oil filler cap so I dont think thats the part number your looking for. I honestly dont remember where the part number is casted on the intake. If you come across another possible part number, post it.
Also tomorrow i am going to see if i can find another number, or maybe that number i found i didnt see right. And then im going to pull that valve cover off again and see what i can find. Thanks for all this help guys
Originally posted by Allwaysbroke Z
Thank you very much Carlos. Could anyone tell me where i could find a GOOD shorter stick.. I have an m6 with the long stick and big ball... IT HAS TO GO. that 2nd to 3rd is a PITA. Any suggestions?
Thank you very much Carlos. Could anyone tell me where i could find a GOOD shorter stick.. I have an m6 with the long stick and big ball... IT HAS TO GO. that 2nd to 3rd is a PITA. Any suggestions?
The Lt4 conversions with heads and cam will put you past 330 rwhp, more like 360-370 horses. The Lt4 is rated up to 425 fwhp so assuming a 15% loss you'd have 363 rear horses a 13% loss would net you 370. I've read magazines showing a stock LT1 M6 dyno 275 rear horses, doesn't mean all will but I'd hope with headers and such you'd be past that. You could also go to the track and see what the car runs, it won't tell you exactly what horsepower you have but the MPH will tell you its estimated power level.
Here's pics of my lt4 intake that i painted, not that hard to do, didn't like the look of the red, too ricey. I also polished the ribs and the fuel rails, looked like someone dragged the intake upside down through the warehouse at summit racing before they boxed it up and shipped it.
I can get the part numbers for the intake and heads if you want, might be able to pic them off one of my pics, or can pull a valve cover, truck's sitting in the front yard trying to sell it..
PS pics are big, and will scorch your retinas, so have sunglasses ready.
http://www.hpphoto.com/servlet/LinkP...6e401b47&size=
http://www.hpphoto.com/servlet/LinkP...17816c51&size=
http://www.hpphoto.com/servlet/LinkP...111e6990&size=
http://www.hpphoto.com/servlet/LinkP...4e8212b0&size=
well, looking through my pics i have here at work, there's a number on the heads, on the driver's side it's between #1 & 3 intake rockers, 12555690. Can't see the intake # though.
I can get the part numbers for the intake and heads if you want, might be able to pic them off one of my pics, or can pull a valve cover, truck's sitting in the front yard trying to sell it..
PS pics are big, and will scorch your retinas, so have sunglasses ready.

http://www.hpphoto.com/servlet/LinkP...6e401b47&size=
http://www.hpphoto.com/servlet/LinkP...17816c51&size=
http://www.hpphoto.com/servlet/LinkP...111e6990&size=
http://www.hpphoto.com/servlet/LinkP...4e8212b0&size=
well, looking through my pics i have here at work, there's a number on the heads, on the driver's side it's between #1 & 3 intake rockers, 12555690. Can't see the intake # though.
Originally posted by JasonL
LT4 heads are stamped "LT4" right on the top of the cylinder head. On the C4, the stamp is visible through the oil fill cap. It probably isn't visible with the F-body cap (has that little extension, right?).
You said you removed the valve cover, so it would have been obvious as you were inspecting the valvetrain. So it sounds like they are probably LT1 heads.
LT4 heads are stamped "LT4" right on the top of the cylinder head. On the C4, the stamp is visible through the oil fill cap. It probably isn't visible with the F-body cap (has that little extension, right?).
You said you removed the valve cover, so it would have been obvious as you were inspecting the valvetrain. So it sounds like they are probably LT1 heads.

the intake above isn't pink, it's red, damn Kodak Digicamera

Last edited by Zepher; Apr 7, 2004 at 08:35 AM.
That's funny, unless there is some sort of difference between the factory heads and over-the-counter heads.
Here are the part #'s
http://www.grandsportregistry.com/lt1vslt4.htm
Here is where the LT4 stamp is, at least on mine:
Here are the part #'s
http://www.grandsportregistry.com/lt1vslt4.htm
Here is where the LT4 stamp is, at least on mine:
Originally posted by Hotwire
Here's pics of my lt4 intake that i painted, not that hard to do, didn't like the look of the red, too ricey. I also polished the ribs and the fuel rails, looked like someone dragged the intake upside down through the warehouse at summit racing before they boxed it up and shipped it.
I can get the part numbers for the intake and heads if you want, might be able to pic them off one of my pics, or can pull a valve cover, truck's sitting in the front yard trying to sell it..
PS pics are big, and will scorch your retinas, so have sunglasses ready.
http://www.hpphoto.com/servlet/LinkP...6e401b47&size=
http://www.hpphoto.com/servlet/LinkP...17816c51&size=
http://www.hpphoto.com/servlet/LinkP...111e6990&size=
http://www.hpphoto.com/servlet/LinkP...4e8212b0&size=
well, looking through my pics i have here at work, there's a number on the heads, on the driver's side it's between #1 & 3 intake rockers, 12555690. Can't see the intake # though.
Here's pics of my lt4 intake that i painted, not that hard to do, didn't like the look of the red, too ricey. I also polished the ribs and the fuel rails, looked like someone dragged the intake upside down through the warehouse at summit racing before they boxed it up and shipped it.
I can get the part numbers for the intake and heads if you want, might be able to pic them off one of my pics, or can pull a valve cover, truck's sitting in the front yard trying to sell it..
PS pics are big, and will scorch your retinas, so have sunglasses ready.

http://www.hpphoto.com/servlet/LinkP...6e401b47&size=
http://www.hpphoto.com/servlet/LinkP...17816c51&size=
http://www.hpphoto.com/servlet/LinkP...111e6990&size=
http://www.hpphoto.com/servlet/LinkP...4e8212b0&size=
well, looking through my pics i have here at work, there's a number on the heads, on the driver's side it's between #1 & 3 intake rockers, 12555690. Can't see the intake # though.
I paid $4,000 for it. Like i said before, i bought it from a woman whos son passed away. She just wanted it gone. It sat for about 4 months. When i got it it about 5 months ago it had 72k miles. T-tops, black leather, cd player, m6, pollished salad shooters. I know i got a good deal on it. Im going to pull the valve cover again today and see what i can find. And Zepher, my roller rockers look identical to yours. Ill keep you guys posted on what i find. thanks again


