3800 swap - Third Generation Forum

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3800 swap
Thursday, September 04, 2008 11:50 AM
Well im new to this site and i have just finished a 3800 swap into a 98 cavalier the 3800 was out of a 94 buick regal although the car had to be swapped to obd1 it had to be done because well the motor was free and thats always the right price but the memcal chip had to be re programed at sinister performance LLC. also the car was left an automatic to keep the cost down and i had a trans out of a 94 lumina that didnt need any computer programs to run but at this point i have under 200$ into the swap but im accually ahead by 100$ after selling to 2200 but what im looking for right now is any upgrades that are cheap and the motor is naturaly assperated if anyone can help let me know and if anyone needs any help with a swap

Re: 3800 swap
Thursday, September 04, 2008 12:02 PM
Is this a street car? Because I'm pretty sure you can't legally switch from OBD II to OBD I and get away with it. But congrats on the swap, $200 is not bad at all!

As for mods, why go cheap? Use all the money you saved on the swap and turbo that sucker




BTW, welcome to the site





Re: 3800 swap
Thursday, September 04, 2008 12:09 PM
where i live emissions is not a problem at all and the reason i wanna go cheap is because this is accually a promo car for a custom shop i plan to start
Re: 3800 swap
Thursday, September 04, 2008 12:15 PM
Ah well, in that case...

Header, full exhaust, underdrive pulleys, motor mounts, etc





Re: 3800 swap
Thursday, September 04, 2008 12:18 PM
Is that the naturally aspirated 3800? Or the supercharged version?

Just curious what transmission you're running, and what axles you used.



Re: 3800 swap
Thursday, September 04, 2008 12:32 PM
its naturaly aspirated im running a turbo 125c or somthing it was free so if it goes bad ill go to a 5 speed and with that i was able to use the stock axles
Re: 3800 swap
Thursday, September 04, 2008 12:43 PM
any pics



JBO since July 30, 2001
Re: 3800 swap
Thursday, September 04, 2008 12:49 PM
http://www.cardomain.com/ride/3142123 thats my cardomain site but i dont have any finished pics i cant find my camera
Re: 3800 swap
Thursday, September 04, 2008 1:13 PM
not bad would have gone with the series 2 but can't complain with the price



JBO since July 30, 2001
Re: 3800 swap
Thursday, September 04, 2008 1:20 PM
i plan on upgrading to a series 2 3800 but im gonna wait till the price is right and i found that you can use the series 1 ecm and harness with a few changes so i figured when i find one witht the right price ill change it
Re: 3800 swap
Thursday, September 04, 2008 1:22 PM
one thing i need help with is the fuel pump it runs on the 2200 pump but it doesnt run like it should does anyone know what pump to use that i can get cheap

Re: 3800 swap
Thursday, September 04, 2008 4:47 PM
I have a 3400 which is pushing more power than that 3800 is, and it runs fine with the stock pump. If it's not running right, it is probably a bad fuel pump, or something else causing it not not run right. Actually my fuel pump is enough to push the AFR to 10.5:1. So, it's got some room.





Re: 3800 swap
Thursday, September 04, 2008 9:12 PM
im going to change the fuel pump tomarow night ive got another stock cav pump ill see if that helps i hope it will it will save me alot of hassle can anyone help on where to drill for a temp gauge on the intake?
Re: 3800 swap
Friday, September 05, 2008 4:17 PM
well as i was pulling the tank to change the fuel pump i went to unplug the wires and the ground can off the car so i fixed the wired and now it runs great thanks for the pump info shooff
Re: 3800 swap
Saturday, September 06, 2008 6:51 AM
my 3800 SC doesn't like my pump i got 388000km on mine so its goona be comning out when i get a 96 sending unit and a plastic tank either a blacker pump on it our the GTP pump on it have not decided



JBO since July 30, 2001
Re: 3800 swap
Monday, September 08, 2008 11:34 PM
Dont quote me but im pretty sure they run the same pump, or thats what i hear. I put a supercharged 3800 in my sunfire and am still running it with the stock 2.4 pump and it runs fine! I went to get the GTP pump and they said it was the same as the one i have so i would say you shouldn't have a prob..
Re: 3800 swap
Sunday, September 14, 2008 6:46 AM
the cavalier pump doesn't pump enough continois as the blazer or GTP pump

cavalier pump is the same as the grand am pump so swappin a 3400 is no issue on a series 1 a cavalier pump can supply it

i have a rusty tank and my gauge reads 0ohms empty and 90 full so since it doesn't match my sender 940E and 250F i'm swappin to the 00+ tank, 96 sending unit (got it now) and a blazer pump to solve any issues

have you changed the plugs in it yet???? i put autolite 103s in my 3800SC and gapped them at 55 insted of 60 might drop them down to 52 or 50 see if that helps me a little more fine seems to go wonky at 5000-5500rpm



JBO since July 30, 2001
Re: 3800 swap
Thursday, September 18, 2008 4:24 AM
Random question... but I got rid of my GTP, now I have a couple of parts here that I never put on it. Anyone need an alum. intake gasket, or a nylon coupler with some oil or a front valve cover by chance?





Re: 3800 swap
Monday, September 22, 2008 7:07 PM
MAYBE i dooooooo

the couple is it a ZZP one sor the stock one

intake gaskets is it the lowers or the uper to the charger

private mesage me with a price



JBO since July 30, 2001
Re: 3800 swap
Thursday, September 25, 2008 10:28 AM
wel im going to put 5 speed in now since the auto trans dont work well but i need to know the thickness the flywheel needs to be turned to(using camaro flywheel)
Re: 3800 swap
Thursday, September 25, 2008 2:12 PM
.84" if your using the cavalier tranny which i suspect you are

you will be removing a BUNCH of material its .84" from the crank side of the flywheel to where the clutch disc surface

you will also need to get 8 grade 8 or stonger bolts to put it on as the auto bolts are too short you bolts should be the same thread size and diameter but you need 1" long think autos are 3/4" long they wont work

if you wanna be a ginuea pig do the G6 6spd i could use some of the infor for the future i don't have much on it tho



JBO since July 30, 2001

Re: 3800 swap
Thursday, September 25, 2008 2:35 PM
Not a Series 2 3800 = sadness .



My Cav
I give up...
i'm buying a VW those people love trees, so they should love eachother too... "Andy"
Re: 3800 swap
Thursday, September 25, 2008 8:14 PM
i already have the 5 speed trans and the gear seperation in the 6 speed isnt very impresive so i just have it removed from the where the clutch mating surface is right?

the series 2 3800 is in the works but the series 1 was cheap but i have a series 2 that needs a new crank so that will go in next year i think
Re: 3800 swap
Friday, September 26, 2008 7:00 PM
yeah it gets machined off the clutch surface but the total distance has to be .84" FROM the clutch surface to the back of the flywheel where it mounts to the crank shaft

basicly put it on a table it should be .84 from the table to the clutch surface another way to look at it

think the camro size is 1.14" and you have to go to .84 so you tacking a good chunk off make sure your machine shop guy knows cause they usually don't machine that far



JBO since July 30, 2001
Re: 3800 swap
Saturday, September 27, 2008 7:51 AM
alright thanks for the info on that and do i just get bolts for a camaro?
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