you guys with 3.3L's

[1993MTXSHO]

ok well guys my 3.2L that just got honed still needs to be bored over so I will be doing one of a few things, one of those options was doing a 3.3L now since I don't have the money this is going to have to wait now until the summer. Anyway, how reliable are the 3.3L's with the 10:1 compression. Iv herd the 3.3L's are hard to keep in tune or are those only the high compression 3.3's with 10.5:1? Also how thin are the walls am I going to run into any trouble this was a 95 3.2L block originally fyi, Any info or thoughts is appreciated

 

[1993MTXSHO]

no one knows?

 

[SHOtime2511]

as long as you have a block from a 95 you'll be fine on wall thickness.
as far as tuning and being reliable i cant say.i think if you have tweecer and can use it you'll be fine

 

[Axianator]

Having personally owned a 3.3L engine (with 9.25:1 CR) since September '05, I can safely report the following:

- When properly prepared, a 3.3L is no less reliable than any other 3.0L or 3.2L engine that has received machine work. Of course, I personally subscribe to the counter theory that there are no differences in cylinder wall thickness between the 3.0L and 3.2L engines. If you are concerned about cylinder wall thickness, then you can always machine a '93-'95 3.2L ATX block (like I did) without concern.

- The only tuning problems that you might experience with your 3.3L are those that are common to all '89-'95 3.0L or 3.2L engines which result from your combination of aftermarket camshaft choice and exhaust configuration. Small changes in engine displacement alone (such as those that you would see from creating a 3.3L engine) are not enough to warrant any tuning problems by themselves.

 

[1993MTXSHO]

Having personally owned a 3.3L engine (with 9.25:1 CR) since September '05, I can safely report the following:

- When properly prepared, a 3.3L is no less reliable than any other 3.0L or 3.2L engine that has received machine work. Of course, I personally subscribe to the counter theory that there are no differences in cylinder wall thickness between the 3.0L and 3.2L engines. If you are concerned about cylinder wall thickness, then you can always machine a '93-'95 3.2L ATX block (like I did) without concern.

- The only tuning problems that you might experience with your 3.3L are those that are common to all '89-'95 3.0L or 3.2L engines which result from your combination of aftermarket camshaft choice and exhaust configuration. Small changes in engine displacement alone (such as those that you would see from creating a 3.3L engine) are not enough to warrant any tuning problems by themselves.

so basically im looking at throw it all together see ifs ok and if its not then get the tweecer and all should be well? I have all the bolt ons and I was going to get the stage 2 race cams. So its first time running will probably be with race cams is that where you think i might run into trouble. It will be tuned with an lpm for race cams.

 

[SeanMc]

I have stage 2s, I'll almost stall after I come to a light after hard braking, sometimes startups can be difficult, I get some idle hunt after startup, car lopes like a mother....I love it.

 

[Axianator]

so basically im looking at throw it all together see ifs ok and if its not then get the tweecer and all should be well? I have all the bolt ons and I was going to get the stage 2 race cams. So its first time running will probably be with race cams is that where you think i might run into trouble. It will be tuned with an lpm for race cams.

Even with a set of Stage 2 cams (or better) such as Sean's, the factory programming should be enough to get you through the initial startup and early running phases, provided you aren't introducing a non-factory MAF or higher-flowing injectors.

 

[SeanMc]

Even with a set of Stage 2 cams (or better) such as Sean's, the factory programming should be enough to get you through the initial startup and early running phases, provided you aren't introducing a non-factory MAF or higher-flowing injectors.

Yup, and it's a fairly reliable form of transportation.

 

[1993MTXSHO]

well I do have an 80mm mas but its been programmed on the car with an lpm for a while. Your saying the car will learn its idol with the new cams all on its own?

 

[Axianator]

well I do have an 80mm mas but its been programmed on the car with an lpm for a while. Your saying the car will learn its idol with the new cams all on its own?

What I'm saying is that the EEC will do the best it can with what it's been given through both it's programming and the parts that have been installed on the engine. Since your LPM has been previously programmed for the 80mm MAF and your engine was presumably running well with the 80mm MAF before the swap, then the LPM should be enough to get your car up and running.

Keep in mind, though, that this assumption also assumes that your engine was properly assembled, is without vaccum or exhaust leaks, the cams were properly dialed-in, and that the other EEC sensors are functioning and within range. If you should introduce any non-factory items into the mix (such as a bigger MAF, bigger injectors or even certain exhaust changes), then all bets are off and you will need to reprogram your PCM with an LPM, TwEECer or other device to account for whatever additional changes that you made.

 

[SHOtime2511]

I have stage 2s, I'll almost stall after I come to a light after hard braking, sometimes startups can be difficult, I get some idle hunt after startup, car lopes like a mother....I love it.

thats the SHOSHOP stage 2 cams?
im asking beacuse i just acquired a set and im building a 3.2 as we speak

 

[SeanMc]

thats the SHOSHOP stage 2 cams?
im asking beacuse i just acquired a set and im building a 3.2 as we speak

Yep. A tune should work all these issues out though.

 

[AREA 91]

I can tell you that the +40 cams will NOT idle at the stock 900RPM. I venture to guess that the SSII's will be close.

 

[SHOtime2511]

Yep. A tune should work all these issues out though.

no thats a good thing! i want it to lope

 

[Axianator]

I can tell you that the +40 cams will NOT idle at the stock 900RPM. I venture to guess that the SSII's will be close.

Yes, but the SHO Shop Stage II cams and Josh's +40 cams are two different beasts with different specs.

Bottom line - since every engine will respond differently to these types of changes, "Your Mileage May Vary".

 

[1993MTXSHO]

yeah id be the shobros stage 2's that id get