3.8 to 4.1L, Questions

[Amphilophus]

it broke after 400 ft lbs of torque who is putting down those numbers N/A? It does suck that they suggest not running boost but has anyone tried cryo treating the crank or something like that? I would think that that kit could be pretty reliable running a small shot. probably just as reliable as someone running a big shot on a higher mileage motor like alot of the people on this site do. I just think that it is great all the research some of these companies do for our 3.8 and then nobody gives it a try. i just hope that by the time I have the money and time to buy this kit that it is still available. just my thoughts. thanks.

[Bird_Of_Prey]

I checked out the link. $1500 for a offset ground stock crank and balanced L32 rods with bearings...... A machine shop could do it alot cheaper. I wouldn't be comfortable spinning a crank that has had 2lbs of material removed and no hardening peformed.

[Need4Camaro]

So basicly, when I get this kit, what parts from it will I need to have replaced or strengthened to handle a boost?

and I'm going to be using premium gas with this kit arn't I?

[T-Punk]

when you add in the fact that after you get the 1500 doller stroker kit you also have to install it (basically take the engine out, tear it down and rebuild it and then put it back in) you could have spent the money better in other places (namely heads, uper and lower intake, valvetrain, cam, or turbo). its great for an all out na motor but if FI is in your future you can spend you money better in other places.

[Amphilophus]

yes it is a N/A motor it would be dumb to build a engine with that high of a compression ratio to use with a turbo.But if you buy the kit and build the engine with p&p heads and intake,big cam, and tunning you could have a fast N/A car and add a 100 shot and you would more than likley be the fastest V6 f body and you may blow the engine but the same could happen with any FI motor. I understand all of your points but if you wanted to be the fastest v6 Fbody you would want the stroker kit.

[ December 20, 2004, 01:15 AM: Message edited by: Amphilophus ]

[97 30th RS]

Originally posted by Need4Camaro:
Like I stated before, I've only heard this was possible and it striked my curiosity. So you're going to just have to shoot me for asking the dumb questions I'm about to ask.

What kind of powergains would this give me ALONE? then what kind of gains would it give me if I were to add a Cam and Port and Polish?

Is this just like rebiulding an engine only adding better parts?

The Pistons, Connecting Rods, ect will all be replaced but will they all beable to handle a turbo later?

Would I need bigger heads and a bigger ThrottleBody? What about the Pulleys?

Finally my two DUMBEST of questions

#1 What exactly IS it that makes a 3.8 to a 4.1? whats the determining factor? Is it compression ratio? what determines that?

And

#2 What exactly IS a stroker?

Yes I know I need more knowledge before I begin a project like this... thats why I'm here asking...

I also know that this project is ganna cost me a hefty little burden cuzz after the engine, I need a new rear end, tranny, wheels... I'm however interested in it because it's a project and I've never seen it done. Trust me, my car see's enough downtime where I could easily have the engine out and modding away!

All of those questions are anwsered on the website. All you are doing is adding a larger stroke crank, which will net you more cubes. Stock crank is 3.4 inches, this one I beleive goes to 3.625 or something like that (doesn't say on website either) It comes with forged oem rods out of the gtp. No pistons included. It is 1400 dollars. Someone sad 4500 bux for a custom crank?? Bull. We don't have Ferraris for christ sake. :rolleyes:

[Turbo V6 Camaro]

Originally posted by 97 30th RS:
</font><blockquote>quote:</font><hr />Originally posted by Need4Camaro:
Like I stated before, I've only heard this was possible and it striked my curiosity. So you're going to just have to shoot me for asking the dumb questions I'm about to ask.

What kind of powergains would this give me ALONE? then what kind of gains would it give me if I were to add a Cam and Port and Polish?

Is this just like rebiulding an engine only adding better parts?

The Pistons, Connecting Rods, ect will all be replaced but will they all beable to handle a turbo later?

Would I need bigger heads and a bigger ThrottleBody? What about the Pulleys?

Finally my two DUMBEST of questions

#1 What exactly IS it that makes a 3.8 to a 4.1? whats the determining factor? Is it compression ratio? what determines that?

And

#2 What exactly IS a stroker?

Yes I know I need more knowledge before I begin a project like this... thats why I'm here asking...

I also know that this project is ganna cost me a hefty little burden cuzz after the engine, I need a new rear end, tranny, wheels... I'm however interested in it because it's a project and I've never seen it done. Trust me, my car see's enough downtime where I could easily have the engine out and modding away!

All of those questions are anwsered on the website. All you are doing is adding a larger stroke crank, which will net you more cubes. Stock crank is 3.4 inches, this one I beleive goes to 3.625 or something like that (doesn't say on website either) It comes with forged oem rods out of the gtp. No pistons included. It is 1400 dollars. Someone sad 4500 bux for a custom crank?? Bull. We don't have Ferraris for christ sake. :rolleyes: </font>[/QUOTE]bull my a$s i checked, 3000 for a crank and i only found 2 place's that were willing to do it and they needed my stock crank for 4 weeks

[Need4Camaro]

Basicly you're stating turbo'ing a 4.1L is pointless because the higher compression ratio? If I lowered the compression ratio then technically it wouldn't be a 4.1 anymore wouldn't it?...

Maybee I'll buy a V8 Block and mod it as the money comes and when it's all beefed up, drop it in...

Would the same situation apply as far as Turbo'ing if I were to change a 350 to a 427?

Do any of you have AIM? It would make things much easier. IM me at Ashura Knuckles after 4:30 P.M. Eastern time...

[97 30th RS]

compression doesn't afect bore x stroke ratio.

[Need4Camaro]

Originally posted by 97 30th RS:
compression doesn't afect bore x stroke ratio.

I thought the bore x stroke ratio equalled compression. I guess I was wrong?

With a lower compression ration, why would it be pointless to turbo a 4.1L? I'm lost... wouldn't more displacement set it off better? Why do turbo's require lower compression ratio's?

[T-Punk]

the 1500 dollar crank would crack under the pressure of the turbo. If you get a forged one and get lower compression ratio pistons then this would be an awesome setup and would deffinately not be pointless. This combo would give you good na low end power and great high end power when the turbo kicks in on top of the power of the stroker. 500hp should be easily attainable with this combo.

[Need4Camaro]

Originally posted by T-Punk:
the 1500 dollar crank would crack under the pressure of the turbo. If you get a forged one and get lower compression ratio pistons then this would be an awesome setup and would deffinately not be pointless. This combo would give you good na low end power and great high end power when the turbo kicks in on top of the power of the stroker. 500hp should be easily attainable with this combo.

So the only thing giving me a 4.1L is the crank? Whats all included in a crank? Would lower compression ratio pistons slow me down without using the turbo? Can I get a forged crank that will get my engine up to 4.1L's? Can I have the existing crank forged?

[T-Punk]

well no you cant get "your" crank forged but you can get a forged crank with the stock dimensions. The only thing that gives you more stroke is the crank but the stroker kit from zzp is balanced with the connecting rods that come with it. Zoomer told me he could sell a forged stroker kit for i think it was $4500 and that would be your best option. the lower compression pistons would give you less power when you are not under boost but it would still be much better than a non stroked engine. the stroking will move you power curve lower but when you add the turbo it would then extend it further out giving you great power under the curve. If you use 8.5cr pistons with the stroker you would get a compression ratio of 8.9:1. that would be fine for 12+psi of boost. If you do the stroker though i would say go ahead and do a full build up with new pnp heads and upper and lower intake, and valvetrain since the engine will have to be out of the car and would make those mods much easier. good luck if you try this.

[Need4Camaro]

Originally posted by T-Punk:
well no you cant get "your" crank forged but you can get a forged crank with the stock dimensions. The only thing that gives you more stroke is the crank but the stroker kit from zzp is balanced with the connecting rods that come with it. Zoomer told me he could sell a forged stroker kit for i think it was $4500 and that would be your best option. the lower compression pistons would give you less power when you are not under boost but it would still be much better than a non stroked engine. the stroking will move you power curve lower but when you add the turbo it would then extend it further out giving you great power under the curve. If you use 8.5cr pistons with the stroker you would get a compression ratio of 8.9:1. that would be fine for 12+psi of boost. If you do the stroker though i would say go ahead and do a full build up with new pnp heads and upper and lower intake, and valvetrain since the engine will have to be out of the car and would make those mods much easier. good luck if you try this.

So basicly if I'm going to turbo, the stroker kit from ZZP is basicly useless but the forged one from zoomer would beable to give me a turbo-ready 4.1?L

[T-Punk]

zoomer is the guy in charge over at zzp he said he could make a forged system though for more money and yes it would be great for a turbo if you lower the cr.