is there a diffrence between them?

 

My 2.8 seemed quicker than my 92, but it was a 4 speed.

Till 86 or 87, they were carbed, but after that, they got TBI.

 

Camaro, 82-84 was carb, then in 85 went to mpfi. Cam is designed for HP, top end.

S10, carb tell 85, then went to TBI. Cam is designed for tourqe, and towing. Not much for top end.

Other then that, blocks are quite the same, so are the heads. Cams can be swaped to whatever you choose.

Cranks, pistons, pushrods, rockers, etc all swap.

 

S10 TB 2.8 heads aren't aluminum are they? BTW did the 85 2.8 Fbody have a cam for more top end? I noticed the 85 model had 135HP @ 5100RPM and 165TQ @ 3600RPM and the later models had 135HP @ 4900RPM and 160TQ @ 3900RPM

 

I'd rather have a n engine make more power down low. My big block thinking. The less the engine has to rev, the less chance of breaking something.

 

No, heads are solid steel, and heavy.

They might have changed the cam in them years, but still the s10 cam and injection style are designed for low end towing, not flying down the highway.

 

Did they really use a steel head, or did you mean cast iron? I'm not trying to start anything here, I'm just curious. I always thought the heads were iron, but then again there's a lot I don't know. I've seen people actually swap in camaro 2.8s in their 2.8 powered S10s, personally I would go with something a bit "beefier", but yes the internals are all the same except for what was mentioned above.

 

steel, cast iron, same thing in my book, sorry.

I now have a camaro engine in my s10

But all internals swap.

Many people on my s10 board have bored .010 and installed the 3.1l crank and pistons. I guess they didn't want to do the 3.4l swap which in my eyes is easier, faster, and more powerful. To each their own.

 

Yea thats what i was wonderin, for some reason i thought i would swap in a Camaro 2.8l into an S-10 but if i would do that i probably would go with the 3.4 swap

 

Here's my Blazer's engine.

 

Heres the swap I'd like to do

 

in-car view

 

Heres my engine swap while it was W.I.P.

Basically done now. Need to do elec fan, and air intake. I ordred T5 today, so it should be here in few days

 

Ovrclck350, what's the specs on that engine, and do you have one, and where can I get one?? That would be sweet to have one of those in a thirdgen, or even an s10 for that matter


Dale, I can't make it out from the pic, but is that the 3.4L? Lookin good there too!

 

yes, 3.4l in my truck

That other engine says lambo on it. so I'm guessing a diablo v12

 

Yup, 6.0L Diablo Engine.

 

hey if you guys really want to build a bad *** 60 dergree v6
have the block bored out and resleved for a 4 inch bore
2.8 - 3.4 have the same center to center spacing as a sbc
you would want to run fwd aluminum heads and have then ported as much as possible even a little in the combustion chamber also install largest valves possible
the 2.8 also uses 5.7 inch rods but the deck height on the 2.8 is like .050 shorter than a 5.7 so piston would need to be found/made which will need a 25 to 30 cc dish you will still have about 9 - 10 to 1 comp ratio because of the larger bore a custom head gasket is needed
what is nice about this setup is the bore and storke are the same as the 302 sbc and comes out to 226 with 3.0 inch stroke
nice aint it any way with proper cam and carb or fuel injection this engine will prob make close to 300 hp and 250 ft lbs which coming out of that engine is incredible and will give a stock v8 a run for there money it all will cost money but is theoretically possible on eday when i have fundage i will do it

 

With my 2.8 in the 1985 Blazer I never got past 90-95MPH even with a good tail wind. Even with all the tricks I did.
YET I stunned many drivers with the great off the stop light line with my 1985 S-10 Blazer.
I did tricks to the distributor & exhaust, as I own a FEDERAL version Blazer & ya can do those tricks.
BUT the engines (F body & S-10) are identical except the following-
The CAMS are different in the MPFI & the Carb version. I only know of the cam specs for 1982-1985 S-10 Blazer & the 1982-1984 Carb'd F Body & MPFI 2.8/3.1 F Body.
The Valve Sizes are SMALLER in a Blazer than the MPFI version of the 2.8/3.1.

Hope this helps ya.
Block wise/Identical!
ALWAYS seek the heads from a MPFI engine! And MPFI Cam, too!

 

KED:
I see your doin the 3.4 swap on your blazer, is it the same as the swap for the camaros? Will the 3.4 hook right up to the tranny on it along with the intake and whatnit like the camaro swap??

 

yes it will. Guys on s-series.org do this all the time. However the recommend the "crate 3.4l" because the cam in it is designed for tourqe.

 

i dont think its possible to bore the 2.8 block to a 4" bore... stock is only 3.5". You are talking about an extra .5".

If you did managed to get it bored out to 4", you would have to get it re-sleeved and afterwards you would still have paper thin walls, which will not handle much power at all.

EDIT:

I went out an measures the cylinder wall thickness (including sleeve) and it is exactly 1/4" on a 2.8 block. (i think 3.1's are the same, and 3.4's are a little thicker)

If you wanted to bore out the cylinders to 4", you would have to remove 0.5", or 1/4" per cylinder wall. And since the cylinder walls are only 1/4" you would not have any cylinder walls left at all when you are done.

 

NO Difference
between the cam in the factory issued under the hoods of the 4th Gen 3.4 & the crate engined 3.4.
ONLY TROUBLE I'M HAVING with my 3.4 Blazer swap
(besides time to wrap it up due to house I'm fixing for sale), is location of the electronic feed under the hood of Blazer for the electric fuel pump.
Recall that
a carb'd mill has a mechaical fuel pump
the 3.4 is a MPFI style mill & thus NO engine block provisions for a mechanical fuel pump.

BEYOND THAT OF MY OWN PERSONAL PROBLEM/DETAIL it's open hood, mix/match parts, close hood, drive away.
No TRUE modifications at all!
The 3.4 is a wonderful option of a late model engine for 1980's vehicle road usage.
Yes that's a 1995 Camaro 3.4 in the pic. I only need conquer that fuel system detail, readjust valves & add smog stuff for CA smog testing.

 

what does it matter about the stock cams that come with our engines anyways?

almost everyone who is looking for better performance would without a doubt, change to a better aftermarket cam.

and since mostly everyone who does the 2.8 -> 3.4 swap is doing it mainly for performance reasons, a cam swap should be at the top of thier list of "things to do"

 

not to be picky, but .5 is 1/2", and .25 is 1/4"


Either way it wouldn't work with boring the cylinder walls, at least I don't think

 

The cam that is STOCK in a 3.4 mill is designed by Crane Cams.
It is just about the most aggressive cam for the 60* engine family, period.

FOR MAJORITY of 3.4 owners, swapping the 3.4 cam out for another isn't worth the time or dollars or grease under fingernails.

For 3.4 facts, go to the GM Performance Parts catalog available at ANY GM DEALER for a MEASLY $6.95 AND WORTH IT!

 

I didnt do my swap for performance.

 

Neither did I.
Yet I made a faster vehicle while cutting emissions from my tailpipes by switching/upgrading to a 3.4.
Withe these 3.4 mills, I wouldn't waste my time doinga cm swap. These engines are quite fine as it.
It's now detials that will make my 3.4 swaps better.
Only time I'll change a cam is on a vehicle that doesn't go for smog emission testing.
Right now I do have three cars that qualify for that option.
Yet, I'll make them run/move on their own first!

 

i you reread what i wrote ( under travisz28maxx) i said you would need to resleeve to block which will give you plenty of clyinderwall thickness
also i didnt want to get into much detail but the reason why you would use fwd aluminum head is 1:they flow better 2: easier to modify because you would need to have the block welded or whatever for coolant passage to the heads which would need to be heliarced up and redrilled because of the larger bore
i have a gm power catalog which gave me all the measurements thats why i know that the 4 inch bore will fit with a resleeve

 

MANY fond memories of Opels
Many years of driving them.
Ya want a 60* mill, go get a 3.4.
Then IF ya wanna, build bigger.
Why waste a moment on those little 2.8 & 3.1 things.
A 3.4 crate mill goes for only $1800.
TRY matching that dollar for performace on a little 2.8/3.1
Ya won't win.
Make simple.
Why rebuild a 265 Chevy, when a 400 Chevy is identical in "apperance" & fits as well in the engine bay.
CUBIC INCHES RULE!!!!

 

i always think outside the box
why buy a 3.4 that only will make like 175 hp out of the crate
i d rather take the challenge and spend 1800 on machine work to build a bad *** engine that has not been done
oh what r your fond opel memories

 

Opel Memories?
OFF TOPIC...
The gate at Pocono Race Track was open,
I drove onto the track
Did THREE LAPS AT FULL FLOOR AT 95 MPH (big nasty bump on that track, too!)
I "stopped" when I saw people chasing after me, as I wasn't an invited guest...
When the Opel saved my life as I got hit at drivers side door, pushed from an angle "\" to perpendicular "!" to the hillside & pushed up it.
My driver seat "V" shape crushed, the console disappeared (I was pushed to the passenger seat), I hopped out the drivers door NASCAR STYLE. I LOVE SEAT BELTS...
My 1975 Opel Sportwagon (FI model!) started right up & drove away, the 1975 Camaro that hit me was TOWED (it wouldn't start....)
The day I regained my 75 Opel from its train cross country trip (I had it shipped from Philly to LA).
I have driven the Pacific Coast line (to Big Sur) and have a pic of me & Opel at the Nevada California Border (took it to Las Vegas).
Last time I drove the car on Mulholland curves overlooking LA & the San Fernando Valley at nighttime (I knew it was aging..).
Then when I did a "U" turn in road, the front suspension broke, spring popped out. I looked at the situation, closed door, went to work & called a tow truck to bring car home so I could strip it & it went to the sky & my memories.
I had a 1974 Sport Wagon (4-speed) while the `75 was being repaired (welded in a complete car side I obtained for $100).
I still have some parts, owners manual & shop manuals (`75 part was separate). No parts not for sale.

Old Girlfriend has her 1972 Opel GT. I have a pic of SANTA & his Reindeer. Santas Sled is a RED Opel GT. I took that pic in the hills of Topanga Canyon back in late 80's....

You asked.
Don't waste a moment on these 2.8/3.1 mills.
Await GM release of the NEW 60* engine family (yes it's our foundation) for real power. First version will be in the new Caddy.... YES REALLY

Go stick a Chvey 454 with a Blower thru the hood for more power in your Opel. I have several Hot Rod mag pics of those creations!
DID YOU KNOW THAT
"Project Opel" was the CODE NAME FOR
the 1953 Corvette project!
AND YES, the style of the OPEL GT was STRONGLY INFLUENCED by the 1965 MAKPO SHARK show car.
IF ya have the Opel Chiltons repair manual, you'll see a GT with "T" tops in there.
There is an OPEL in Hurrah Museum in Nevada.
IT is a TANK made by Opel during WW2.
HOW I BOW TO ADAM OPEL (GM of Germany) for all the fun (try 11 years & 154,000 miles....).
AND I want to see, in person, a BITTER again.
My decision to purchase the Opel was influenced by Car & Driver Showroom Stock races at Old Lyme Rock race track in CT. back in early 70's.
YET the car I crave is a 1974-75 Vega. I traded my `75 hopped up Vega (4-speed & 2 bbl engine purchased new & owned for 65K miles done in under 3 years) for the `75 Opel FI SportWagon and no regrets, but... try to get Opel parts.....

Sorry to bore all, but, THANKS FOR STARTING MY DAY with wonderful memories. MANY wonderful memories....especially of a car design that literally saved my life once. That 1975 Camaro hit me going a good 45-60 MPH! I was pulling out from stop sign (he was going WAY too fast for that blind curve-it was determined a 50-50 accident).
I LOVE OPELS!

Really, dump the idea of wasting $1800 on hopping up a 60* mill. It won't win nor work right, period.
That's why I did the swap. I paid $800/$900 (yep two car projects-see below) for my used running low milage mills. Do search & read the emissions test from my 1985 3.4 Firebird.
Go buy a better foundation V8 car for the money.
NOW a 3.4 in a OPEL GT, NOW THAT's A GREAT IDEA!