What is the biggest engine that can fit in replace of the 2.4L Ecotec. with fewest modification or is there a way to get my 2.4 to 300hp cause im shooting for +300

to my knowledge (limited as it is) there is CURRENTLY no way to get to 300. HOWEVER, time may solve that little problem with proper tuning for turbo's and other such upgrades.

you could fit a v6 in there?

you could fit a v6 in there?

That would be a major change, Chris.....cooling, a/c, brakes and booster would need to be relocated, etc. etc. This had been looked into. Just not practical for a everyday "street" car.

How 'bout an LS4? Probably have to fabricate a new power cradle, but it'd probably fit. Those are 303 HP stock.

Hahn Racecraft will probably have a turbo kit soon that'll pull close to that once they get the computer issues worked out.

easiest route may be using the 2.0 litre & turbo (juiced up).....

easiest route may be using the 2.0 litre & turbo (juiced up).....

Agreed...

Or the Hahn people.

But, any way around it...well set up turbo, an engine swap to 2.0, or anything else...you'll spend about $5000+ for 300HP, if it is set up properly and done "cleanly".

throw something japanese under the hood...

go with injectors, intake, header, exhaust, tune, cams, and NOS :)

i have actually thought about putting a b series engine in one

Have you looked into STS turbos? They have a universal kit that I saw mocked up in a cobalt. Clams to take a motor with 190hp to around 300hp. Here is their link: http://www.ststurbo.com/home

It wont be an easy swap but, there have been several car shows that have put a V-8 in an HHR. Of course they also had the time and many to convert it to rear-wheel drive.

biggest engine that will "bolt in" to the HHR isn't the most powerful.. the big power makers are the smallest displacement right now. The 2.0's are making either 205 with a supercharged app or 260 with the turbo app. The "big block" ecotecs are 2.4L and make around 170-175. So bigger isn't always better.... a friend of mine says

Turbo/Supercharger = replacement for displacement...

biggest engine that will "bolt in" to the HHR isn't the most powerful.. the big power makers are the smallest displacement right now. The 2.0's are making either 205 with a supercharged app or 260 with the turbo app. The "big block" ecotecs are 2.4L and make around 170-175. So bigger isn't always better.... a friend of mine says

Turbo/Supercharger = replacement for displacement...

:roll:

The 2.4 uses the same block as the 2.0 DI Turbo engine with a longer stroke to make more usable low-end torque for everyday driving. All things being equal, if you had 2.4 liter displacement on the DI engine, you'd make more power. You'd also being running racing fuel and using an 0-ringed block to deal with the higher compression.

put the Solstice GXP motor in their I think you will get around 265 with a little tuning get close to 280hp... I think that will worK:roll:

:D :p:

i bought my HHR because of the looks, safety features, and gas milage. If I wanted more HP, I would have bought something with more HP (like the Mustang Cobra). But will agree about, a turbo would be sweet to have for times :cool:

But then my days of speed are out of me.

I think adding a Blown 572 in the back would make a cool wheel stander for getting the groceries Quickly !!!!! :one:

with fewest modification or is there a way to get my 2.4 to 300hp cause im shooting for +300

Add a 125 shot.

Just don't hope for longevity.......:lol:

go to the ecotec forum you can build out the 2.2 or 2.4 to 300 hp but you will basically be replacing all internals. ALso there is a manual on how to do it.

go to the ecotec forum you can build out the 2.2 or 2.4 to 300 hp but you will basically be replacing all internals. ALso there is a manual on how to do it.

The manual is available from GM and you can get 1100hp out of these motors, but that is an all out racer. The GM book lists part numbers and specs. If you go to an NHRA race, they may have the book in the GM Performance booth.

There is a 19 yr old girl here in So.Cal that runs a non-turbo unblown Cobalt. 2 years ago I saw her run 11.20 sec in the 1/4 at Pomona. The car sounds sweet. Talked to her father and he was going to super charge it. They were shooting for 9 second e.t.'s.

She runs most Tursday evenings at Irwindale raceway street drags.

So.Cal. Speed Shop ran an HHR at B'ville, but at 249mph it went airborn. They have built a few Eco motors and gone real fast.

Hope you are planning to spend some money on the transmission if you get 300 hp.

or trans-axle for fwd. Not to mention BRAKES & suspension !!! & etc..:one:

What is the biggest engine that can fit in replace of the 2.4L Ecotec. with fewest modification or is there a way to get my 2.4 to 300hp cause im shooting for +300

I have seen an LS1 (350ci) in a civic, if that's possible, anything is possible!

Just wait for Lingenfelter to come out with the HHR Twin Turbo Kit :thumb:

^^^ maybe i'll park the camaro and pull out the ls1 and m6.
and shoehorn it into the hhr.lol
that would be an expensive project. but man it would be sick!

lol then i'll put the 2.0 into the z and convert it to fwd.
ok that wasn't funny... i'm going to hell now aren't i

The manual is available from GM and you can get 1100hp out of these motors, but that is an all out racer. The GM book lists part numbers and specs. If you go to an NHRA race, they may have the book in the GM Performance booth.

There is a 19 yr old girl here in So.Cal that runs a non-turbo unblown Cobalt. 2 years ago I saw her run 11.20 sec in the 1/4 at Pomona. The car sounds sweet. Talked to her father and he was going to super charge it. They were shooting for 9 second e.t.'s.

She runs most Tursday evenings at Irwindale raceway street drags.

So.Cal. Speed Shop ran an HHR at B'ville, but at 249mph it went airborn. They have built a few Eco motors and gone real fast.

I can't imagine the transmission and drivetrain problems with 1100HP! But I'd like to know what they are.

And yes, converting a Camaro to FWD is usually enough to send one to hell... :)

Here's one by Year One (go grab a towel first for cleanup afterwards):

GM Performance parts LS6 circle track 585 Horse Power V8 engine, TCI TH700-R4 overdrive automatic transmission, NOS Nitrous system, narrowed 2001 Z28 rear axle assembly.

http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-year-one_3.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-year-one_19.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-year-one_31.jpg

Can I get a "hell yeah!"?

I can see in 10 years maybe, when the Red Sled is a little tired and I'm moving on to an electric or hydrogen car for a daily driver... doing exactly this.

With side pipes. And fuel injection.

Here's another one from Unique Performance:

It has a V8 engine with supercharger and rear wheel drive modification.

http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-3.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-2.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-perfor.jpg

I'd like to see the interior of that...... :)

Sorry didn't mean to hijack this thread.:bow:

Here's the Year One interior:

http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-year-one_43.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-year-one_29.jpg


And here's the Unique:

http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-9.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-8.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-7.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-6.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-5.jpg
http://i160.photobucket.com/albums/t196/bluonyx/SS%20HHR/resized_hhr-custom-by-unique-per-4.jpg

Wow, not as much sacrificed to the transmission tunnel as I'd have thought. Very excellent. And food for thought for me!