3.1L intake

[Lvgrandprix2003]

This is my first 3.1L but not my first GM. Had a 2.8 in my S-10 14 years ago. So is there any surprises on changing out the intake gaskets upper and lower? and is there a build thread on here? If not I may make one up. If and when i have to do it to mine.

[MizzBecca]

there is no build thread, not sure about the intake gasket question though. i never tried going that far with my 3.1 lol

[blown gt]

hope you never have to do one,get a book at any parts place,they are a pitta,lots of little surprizes,to much to list,about 9 hrs.

[Lvgrandprix2003]

hope you never have to do one,get a book at any parts place,they are a pitta,lots of little surprizes,to much to list,about 9 hrs.

9 hours? Really.....I have done some intake jobs before, and most of them were 2 to 4 hours. It might take me 6 since I have never pulled this one apart. But i have done a headgasket job on a 2.8 Regal though.

[brokenmercy]

Just replaced mine. Definitly not 9 hours if you do it all at once. Umm.... would definitly say there is a lot more work involved than in any other ingine lol. I will try to trace what is involved. Might not be in the same order, but I will try lol. Coil pack has to come off. Brackets[if your car has them they are like black bars running along the sides]. Obiously the battery which involves removing the washer fluid resevoir. Undo the throttle body. Upper intake manifold. [duh] Altenator well move it out of the way. Fuel Rail and injectors. and then the lower intake manifold. I believe that is it. Hope this helps(:

[maverickdog8]

If you move any of the push rods on the 3.1L make sure they go back in the exact same spot. I have seen alot of people break or bend them on accident.

[blown gt]

if you have the 3.1 multi port in your gp,deff. easier to work on then the newer 3.1 sfi which is in my 01,too much crap on these cars

[Lvgrandprix2003]

if you have the 3.1 multi port in your gp,deff. easier to work on then the newer 3.1 sfi which is in my 01,too much crap on these cars

Mine is a 2003, So i am assuming its the SFI

[91gpse]

just to make sure... which 3.1 are you talking about? cuz theres 2. a pre 94 and a post 94. their basically the same minus a few details. takes probably 6 hours total. ive done it on both, so i can help with any questions.

edit... sorry didnt see the second page.... either way i can help.... sfi or mpfi.

heres a tip with the sfi... pull the power steering pump... itll make life alot easier....

[blown gt]

so im assuming this can be done with out pulling the heads,i have 102,000 on my 01 se,not leaking yet but would like to do them anyway,one of our salesmen has a 01 se and had his lim done twice in one year,then the engine blew,nice mechanic he had,must have been ass certified..

[Lvgrandprix2003]

You do not have to pull the heads. Just the valve covers, intake. Of course there is more than that, but you get the point