Hello,

I've decided to go ahead and do this 3.4 swap, I've read up on past posts and it looks pretty straight forward, I just have 2 questions:

1) Does anyone recomend a better cam for the 3.4 while still using the 2.8's computer......I've seen the specs on the Crane's 2030 at it seems pretty similiar to the stock specs of the 3.4.........I was just wondering if I can go with a bigger one without running into computer problems.

2) Would anyone who's done this swap recomend getting a custom chip (I was lookin at fastchips) to improve performance with the bigger displacement and larger injectors or could say a JET stage 2 work just as well........also if I did upgrade the cam could a custom chip fix any problems that I might run into with using the 2.8's computer.

I also plan on porting the heads and going with either 1.5, 1.52, or 1.6 roller rockers.......along with the intake, exhaust, and other various bolt-ons.....would that make a difference with my chip selection?

Thanks for the help

 

The 2.8l Chip will work fine with the 3.4l engine. Just still use the 3.4l injectors inplace of your 2.8l injectors on your intake.

The 2030 and stock 3.4l cam are very similer. However, on the s10 board I attend, they :hail: to the 2030 cam, and frown on the 3.4l cam for some reason. They claim the 2030 has more low end tourqe .

I belive the engines come with 1.5 rockers. 1.52 will work w/o changing valve covers. 1.6 rockers will need taller covers to clear them. Fieros are recommended. I have posted pics of mine, or you can copy link in siggy and see.


However, if you are going to add massive mods, I would recommend a new chip. However, most OTC chips are frowned in here, and for the price. I see why. Try and scout someone in your area to burn a chip for you. Equipment is tad expesive, but not unheard of.

 

Want the truth?
Here it is
I HOPE YOU READ MY TECH THREAD
That said
Cam WHY WASTE THE TIME?
The cams are THE same!
Want proof
Go to ANY GM DEALER & BUY THE GM PERFORMANCE PART BOOK FOR A MEASLY $6.95!
Read the cam specs & the Crane Specs
THEN NOTICE WHO DESIGNED THIS GM CAM
CRANE
Rocker ratios & such
Good point spend the bucks to find out.
Me I go stock it does so well it's not funny
Port & this & that
Get it running REBUILD YOUR TRANNY YOU'LL NEED IT THEN FIND THE EXTRA TIME & MONEY TO PLAY WITH THE MILL YA JUST INSTALLED.
I doubt you'll wanna!
It's such a tranformation it's not funny
PS go find the LOWEST MILAGE running 3.4 mill ya can
WHY Spend less money than for a NEW 3.4 mill
Rebuild a 3.4 MIll?
NOPE
GO BUY NEW!
Can't beat new!
Best tips!
NO ON CHIP My car is perfect as is.
HI PO IGNTION NOW
BEST AIR INLET SET UP YA CAN MAKE/FIND/ETC
Want to buy my CAI Camaro unit, restored & top & bottom pieces with filters
Got a Firebird?
Email me for my ram air set up I made
BEST TIP EXHAUST
Look down at exhaust pipes on passenger side engine bay...
See that "T" juction?
Deduct 5-7 HP for that.
Fix that & you're doing great!
Really serious just get the damn motor under the hood, reliable & running strong & you'll be smiling for miles to come!
I've driven my 3.4 Firebird for over 10,000 miles now & it's great!
I can't wait to get my 3.4 Blazer finalized! I need readjust valves & then istall smog stuff for smog test then I'm done (except install a lower milage rear axle)
Port & polish & play with this & that?
Got to be kidding!
Get the car running
Why look/spend money at a project!
You'll be spending enough already!
From everyone I've coached no one has played with the mill.
They just install & enjoy.
200 Foot Pound of torque is a great equalizer
PS Ya won't win every race but you'll have much more fun than before!
GET THE GM PERF PARTS BOOK FIRST & READ UP ON THIS ENGINE!
Tips from the Coach!
BUT if ya want to spend more money, I just bought another house
Want to help buy me sliding french doors & new copper plumbing?!?!?!

 

I got a ported intake manifold on mine. And have 1.6 rollers w/ fiero valve covers too boot. Also have headers and a double roller timing chain on my 3.4 Its fun to run someone every once in a while. I sometimes win. But the chip idea is bad. Just get a custom burned chip. But why though...I let my better half drive and know she'll be safe in it. Just do what "we" say and you ll be happy. Trust us