3500 swap questions

[CNCguy]

OK I got the mount in.... this is what worries me now...

The first picture is where the oil filter neck is... just a few inches below it is the sub frame... there is no way an oil filter will fit in there.

Simply remove the oil filter adapter from the 3500 then use a 10mm? allen wrench to remove the nipple from your old engine. The nipple should screw right into the 3500 and your filter will mount just like it did before.

The headers.... no experience here but I would remove any of the sound deadening/heat material that is near the header and give the tunnel a smack or two to get some extra clearance. The rear header should rock downwards under acceleration.

[PCGUY112887]

OK I got the mount in.... this is what worries me now...

The first picture is where the oil filter neck is... just a few inches below it is the sub frame... there is no way an oil filter will fit in there.

The other 2 pictures are of where the headers hit the firewall. The flange clears fine, it's the tubes hitting the side of the firewall... it hits real bad actually. The engine will barely rotate up enough to fit the front dog bone mounts in, because the headers are pressing against the fire blanket on the firewall. I mean I can probably get it to all go in there, but shit it seems like those headers hit so bad that it would catch on fire or something...

[PCGUY112887]

That back bracket I should be able to make an adapter for here at work, the main issue is that motor mount bolt.... anyone know what size it is so I can search for a tap here at work?

Damn thing... I know I can get it to work if I take the engine back out, but it was a big enough pain getting the flywheel tucked into the tranny and the mount on the bottom in... I really don't want to pull it all back out.

[3400-95-Modified]

I thought you knew of the rear bolt bosses being different... That has been posted in many other places, and is one of the main reasons I didn't do a full 3500 swap. Too many custom brackets needed...

Yes Isaac your car has that bracket, It connects the transmission snout to the back of the block so it doesn't break off under high torque load.

As far as the stripped hole, yes chase it and pray that it will work... two of the 3 bolts wont work, the bracket willl bend too easily. Someone on bstuff was dumb enough to continue replacing lower dog bone mounts because it would bend the bracket and rip up the mount, untill I told him he was missing the lower bolt in the oil pan.

[IsaacHayes]

Egads. Get a tap and chase the threads, then hand thread it in and see if it's good. Harbor freight has cheap tap sets. Not sure what that braket on the trans does, just adds more strength? I don't know if my car has something like that...

[PCGUY112887]

I made a post in the DOHC section about the injectors.

So the 3500 started to go into today... ran into a small issue lol. Friend of mine was trying to put in the front bolt on the bottom motor mount, and managed to F up the threads that it attaches to (their in the oil pan actually I believe). The other 2 bolts are in... think it will be fine with just those 2?

Also the bracket that goes between the engine and the tranny on the pass side... yeah it doesn't fit. Doesn't line up to the holes on the 3500. On the 3100, there is 1 bolt way down low on the engine, then a set of 4 up towards the top of the block more. The 1 bolt down low and 1 side of the group of 4 lined up, and the bracket went in there. Well now on the 3500, they don't line up.

[PCGUY112887]

Well I don't mind the $12 to put them on there the right way... I just gotta know if the clips are compatible since they gotta be ordered

[IsaacHayes]

Scott9999 had leaky injectors until he put the clips on. Of course he was boosted and I think had a FMU.

[PCGUY112887]

Ya know I thought that... I thought maybe they could be pushed "out" of the fuel rail due to pressure and go into the LIM further than they were meant to, causing a leak at the fuel rail.

Anyone run theirs with no clips? There has to be a good reason GM put them there.

[SappySE107]

You don't really need clips on there as the fuel rail being bolted down gives them nowhere to go anyway.

[PCGUY112887]

Anyone with any ideas on the injector clips?

If I can just get ahold of the DOHC clips, will they go onto the 3100 fuel rail?

EDIT - ?

http://www.autozone.com/R,APP1396354/vehicleId,2144702/initialAction,partProductDetail/store,239/partType,01914/shopping/partProductDetail.htm

[wasas9]

hmm that blows. Hopefully my local rinky dink parts house will have it in stock. I still need couplers for my fuel lines because i have way too much extra hose floating around with my setup.

[PCGUY112887]

Em wasas, that is what I was looking for. A 1/4" SPT male to 3/8" NPT female adapter is just about impossible to find.

[wasas9]

Ha, for my CTS all I'm going to do is get a thread adaptor for the 3 wire gen III sensor. But I like that idea though with maching the threads down.

[PCGUY112887]

OK, I baked the paint onto my headers today in the oven... damn it was smelly.

Anyways, I went to put the 3.4 DOHC injectors into my fuel rail, but the little clips that hold the fuel injector in do not fit with the new injectors. Basically the new injectors, on the little edge that the clips go into... the edge is all the way around the injector on the old ones, but it is only 3/4 of the way around on the new ones, and the spot that has no groove is exactly where I need one of the clip "legs" to be.

I had no idea the 3.4 DOHC used different clips... I looked them up on Autozone but they are $5/each and I don't quite see how the clip they show could go on my fuel rail.

Also will this effect me?

http://60degreev6.com/showthread.php?t=36967&highlight=DOHC+injectors