95 3.4l camaro v6 with 01 Buick Century 3100 cylinder head and intake manifolds swap

[@kennethbrady9832]

Do a video on the process and problems you had or had to overcome with this swap

[@greenplant221gaming2]

I wanna do the something similar to my camaro, however all this swaping parts between the different motors is getting confusing. I wanna change the heads, the intakes, and I assume I'd have to change the throttle body as well. Can you tell me what parts I'd need in specific to do so. I'm trying to build my first car. Also what pistons would I need to swap into the motor to make sure the compression ratio isn't too high.

[@jessealday8225]

Imagine what 3500 heads, sheetmetal intake, and a turbo would do.

[@79dent]

You can use the standard 3500 intake for that. Or do a 3900 swap

[@soquidsnake34]

I want to do the 3500 top end swap just been having trouble researching since so many forums use links to sites that don’t exist anymore

[@79dent]

@@soquidsnake34 works with anything but an f body!

[@rgeller56]

What are you able to leave all the sensors in the motor you did not have to change them they float right up

[@bexxsharpless5420]

did you have to change the Plenum out also?

[@Robindehood]

Hey man, hope you've been well. Not sure if you'll see this and I know the car is long gone, but do you remember what you did for the thermostat housing?

[@slomaro9430]

hi i was trying to find mods for my 94 3.4 v6 camaro and i found your video i think it sounds great and i want to do what you did if you'd tell me all the things you did on you car with the manifold like what about the wires on the original manifold and the egr valve just everything if you dont mind. thanks your camaro sounds great i really like it. thanks again

[@Spenceboy94]

Well lets start with the donor car....you'll need a 3100 gm or 3400 gm engine year 99" and up. I used a 00" Buick 3100 but the heads that flow best are Pontiac Grand Am GT heads if possible. Youll need the heads, valve covers, upper and lower intakes, and head gaskets for 3.4l camaro then a gadket set for which motor you use as a donor.

[@slomaro9430]

+Spencer Chamberlain ok thanks. theres a LKQ here in GA i can find the parts also i know on my camaro the throttle body is on the driver side so would i need to get the throttle body off the doner car? thanks again

[@Spenceboy94]

from the donor car you'll also need the throttle body and the braket for the throttle body cable as well as the throttle cable may need to be used. Also pick the fuel rail but you can use the camaro injectors though i do recommend up grading to a higher flow. i used 21lbs/hr. So I deleted the egr from the exhaust and the intake. i bought pacesetter Headers which go straight to a super 40 flowmaster muffler to a side exit. i used a cheap ebay intake. fuel lines will connect right to the new fuel rail. the brackets for the pulleys and powersteering will blot on to the block and new heads with atleast two bolts. now push rods were difficult to find to connect the flat tappet lifters to the donor rockers. dont quote me but i beleive i used 94 cavalier push rods. camaros were too short and buicks were too long or visa versa. lastly the vaccum lines for pcv, map, heater core valve, fuel rail, and purge can be tricky and i dont remember exactly how i plumbed mine but i did steal all the vacuum lines and plastic lines plus the pcv from the donor to help me do so sorry for the novels but i hope this helps. if there's any other questions u have just let me know

[@slomaro9430]

+Spencer Chamberlain thanks it is very helpful ive been trying to find mods and things to do to mine it sounds like a lot of work but itll be worth it one more thing this is off the subject but recently my camaro has been dying randomly like at stop lights ive been asking around to see what is could be ive changed the egr valve, fuel filter, oxygen sensor, spark plugs, spark plug wires and im about to change the starter i was wondering if this has happened to you i dont think its the fuel pump. thanks again

[@Spenceboy94]

+Shane Parrish It is alot of work but i got about 190-200 hp and 250ft-lbs at the crank. now as for the stalling. does it stall while stopping. are you losing electrics or is the engine choking out

[@bexxsharpless5420]

will the Buick century or pontica grand am gt heads work on a 1994 camaro 3.4l v6?

[@kenfenton8637]

Hey man sweet swap did you have to change the pistons too? p.s how did you tune it after?

[@Spenceboy94]

Ken Fenton I did not swap the pistons. The crank, pistons, rods, and block, and cam were all original (seals, rings, bearing, and babbits all replaced obviously). As for tuning i have it running on the stock ecu. If access to a tune shop or software is readily available to you then i do believe some hp can be made just by letting the computer know theres more air and (with upgraded injectors) more fuel. but in my case it just wasnt optimal or worth the time or money. I had a detonation issue immediately after the build which a tune could have fixed but colder plugs and premium gas was a perfect fix.

[@kenfenton8637]

Spencer Chamberlain and for a tune?

[@kenfenton8637]

Thnx man didn't see half the post before

[@Robindehood]

Hey man, which plugs did you end up running? I know you switched to the 3100 heads and intakes, what about pistons? I have a 3.4/3400 build that's running really rich and rough right now to the point where it's flooding the engine after only 30-40 seconds. Plugs end up with a bit of soot and are wet so it's clear that it's flooding. Did you increase your injector size as well? I'd love to pick your brain a bit!

[@Spenceboy94]

I ran (I believe if memory serves) NGK TR6 or TR65. Which is a colder plug than the stock 3100's and as for the rich issue, I experienced the opposite. I ended up upgrading injectors. And the pistons I used were stock 3.4l Camaro pistons.

[@Robindehood]

@@Spenceboy94 I did upgrade from the stock injectors to the 28# injectors and I know that's why it's running rich and flooding. Did you have to tune yours after you finished the hybrid build?

[@Spenceboy94]

28 lbs./hr injectors are a bit over kill for that. I only went up to 21 or 24 lbs./hr because I had no way of tuning. If you plan on caming it and get stiffer valve springs you may be able to use that 28lbs./hr

[@Robindehood]

@@Spenceboy94 so I went with a custom cam from Wot-tech (street/strip cam) which forced me to update the springs as well. The 28lbs were recommended to me by quite a few people, but they all used them with the intent to turbo down the road. We're just at the tuning part which seems to be the most difficult now

[@Spenceboy94]

Ok yes that makes sense. But as for tuning unless your using an aftermarket computer I dont think you can tune in my experience. And I believe the computer is too old for open source tuning.

[@scottmurray6054]

Hey so I have a 3.4 and I've done ALLOT OF RESEARCH and I've heard of this what is all required the heads. upper intake. what about lower intake? Does that need to be done and the computer no codes?

[@Spenceboy94]

Scott Murray it will require you to use 3400 or 3100 series heads the lower intake manifold and the upper intake manifold. It's essentially a top end swap from a fwd 3x00 car. Computer will run it fine. Only code that I had was the EGR code but that only set when it warmed up and it went away as soon as I turn the car off. However I'm sure it is possible to set up the EGR from the 3.4 to be run on that intake I just decided not to do it.

[@kenfenton8637]

what plugs and octane did you run I'm thinking of doing this to my car this weeknd

[@illililililillli]

Hey I have a few questions. Can I contact you?

[@HustleSoundz]

im trynna do the same swap bro. just havent had time. did u use the timing cover from the 3100? i have a 3.1 btw

[@christopherpoucher483]

The 3100 and 3400 are the same engine, just bored over...

[@matthewcolston5895]

how was this setup I'm doing the head gaskets on my Camaro and was considering the same thing you've done, was there a noticeable difference in gains or what

[@Spenceboy94]

Matthew Colston the gains are noticable once your done. i went from 160 hp at the crank to 162hp on the ground and i used 3100 buick heads. If you use 00"+ Pontiac grand Am Gt heads the gains could possibly be larger. This swap does take alot of time and figuring but i loved the results for the money and the uniqueness it gave my car.

[@clutchmaster2012]

I've got a 94 firebird 3.4 and just picked up a donor 2002 3400 to do the swap. Which lifters, rocker arms, and push rods did you use?

[@Spenceboy94]

clutchmaster2012 depends on the cam you use. Assuming you stick with the 3.4l cam you'll need the flat tappet lifters (camaro/firebird oem), i believe i used 94 cavalier v6 push rods(they were the proper length) and i just used the oem rockers on the aluminum heads. I dont remember completly but i believe you need two different length push rods between exhaust and intake. keep your old 3.4l and 3400 rods just in case. But i did use 94 cavalier rods just cant remember how many and where

[@clutchmaster2012]

Spencer Chamberlain Thank you. Appreciate it!

[@clutchmaster2012]

Hey what exhaust set up do you have on it? Sounds great!

[@Spenceboy94]

clutchmaster2012 I ran pacesetter headers right to Flowmaster super 44 or 40 series (one of those) where the cat. was and then straight out the passenger side before the rear wheel

[@Spenceboy94]

it was a custom set up all welded in.

[@bexxsharpless5420]

the gt heads you where talking about will that work on a 1994 camaro 3.4l

[@blazeofglory6721]

The heads from any 99-05 gm fwd 3400 will bolt right up

[@1flynlow]

your compression should be through the roof with these heads how are you getting away with this? tune must be absolutely spot on.

[@Spenceboy94]

1flynlow your absolutely right. At first i had detonation issues once the engine was under load at operating temp. However I was able to find a cooler plug and run 91 which under normal driving conditions remedied the problem. An aftermarket tune however would be a better fix.

[@1flynlow]

good deal. are you running the stock cam? any other mods?

[@1flynlow]

and did you have to modify the throttle cable much?

[@Spenceboy94]

1flynlow the throttle cable from the donor car fit after moding its bracket and no cam

[@DarkLinkAD]

@@Spenceboy94 I bet you see 36mpg highway with this.

[@Olives196]

were the intake and heads a direct bolt on?

[@Spenceboy94]

Hey yes any 3100 or 3400 GM fwd car the aluminum heads are direct bolt on. just a tip use 2001 and up 3100 or if you can find 2000 and up Pontiac Grandam Gt head those glow best

[@Spenceboy94]

as well the upper and lower intakes from the same car up pick from will fit.......and I've dyno'd a 50 hp gain and 60 ft-lbs of torque gain with headers and intake supporting mods

[@Olives196]

thanks...very helpful...btw car sounds awsome

[@mattabell3446]

would have to replace the heads or could u just swap the intake?

[@Spenceboy94]

have to swap the heads as Well. 3.4l camaro had cast heads that fit only the camaro intake manifold. I did this head swap because all in all. the 3.4l intake system was heavy and restrictive. 3x00 series heads and intakes flow much better and are much lighter.

[@tmoney208]

U pulled the engine and didn’t do a ls swap I would of at least put a 3800 in it

[@Spenceboy94]

If I could do it all over again trust me this thing would have gotten an aluminum block 5.3

[@bexxsharpless5420]

did you have to change the Plenum out also?

[@Spenceboy94]

Rebecca Foxworth yes everything above the block is 3100 or 3400 series. Heads, lower intake, and the upper Intake(plenum) all from a 3x00 series gm.

[@bexxsharpless5420]

will the Buick century or pontica grand am gt heads work on a 1994 camaro 3.4l v6?

[@Spenceboy94]

Rebecca Foxworth yes both will work. If you can find Grand Am Gt heads they will get you a bit more power due to the larger exhaust valve. But and 99+ GM fwd 3100 or 3400 series car will work as donor

[@bexxsharpless5420]

will the Buick century or pontica grand am gt heads work on a 1994 camaro 3.4l v6?