To stroke, or not to stroke? LQ4 LSA
To stroke, or not to stroke? LQ4 LSA Hey guys. So I have a LSA supercharger and a 2005 LQ4. Also, a set of LS3 heads that I'm going to have ported. I am building the engine and was going to use forged rods and pistons with the stock crank. I started thinking would it be worth it to go ahead and get a forged 4” crank to build a 408? The 1.9 liter LSA is a small blower and I’m not sure how good it would work. Or if the added expense would be worth it.
appreciate your opinions.
appreciate your opinions.
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Joined: Jan 2022
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Likes: 468
From: Seattle
I mean, "while you're in there". 
. Here's a thread with some good info and parts on that topic. Gonna need a good 4L80E 
. Here's a thread with some good info and parts on that topic. Gonna need a good 4L80E Last edited by theunderlord; Apr 26, 2022 at 10:56 PM.
I mean, "while you're in there". . Here's a thread with some good info on that topic. Gonna need a good 4L80E
. Here's a thread with some good info on that topic. Gonna need a good 4L80E TECH Fanatic
Joined: Jan 2022
Posts: 1,034
Likes: 468
From: Seattle
Hell yeah man. You gonna do the trans work yourself? I've been going back and forth if I want to try one myself. I did my Alison with the help of a buddy and that one worked well, but I dunno, gun-shy on the 80e for some reason. Been watching all the usual suspects videos on YouTube and they give you juuuuuust enough confidence to try it.
Hell yeah man. You gonna do the trans work yourself? I've been going back and forth if I want to try one myself. I did my Alison with the help of a buddy and that one worked well, but I dunno, gun-shy on the 80e for some reason. Been watching all the usual suspects videos on YouTube and they give you juuuuuust enough confidence to try it.
You could stroke it, just know that the LSA blower will make less boost efficiently trying to feed the extra cubes and trying to get more out of it will just create heat.
With that said if you end up upgrading the blower you could easily move to something larger (Whipple, Maggie, TVS) and make a lot of power easily.
A 408 with a bigger Whipple or that TVS2650 unit will make quite a bit of steam, easily into the 900+ range.
With that said if you end up upgrading the blower you could easily move to something larger (Whipple, Maggie, TVS) and make a lot of power easily.
A 408 with a bigger Whipple or that TVS2650 unit will make quite a bit of steam, easily into the 900+ range.
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More cubes will make the same power with less boost. I'd rather swap out a pulley to make more power than have to pull the motor apart later on to add a stroker crank. It won't cost you much more to add a forged 4" crank now, so you might as well do it.
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Verdad Gallardo How many lbs. are you currently on your combo?
Any idea how high you can turn it up before it becomes a heat pump?
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I am not trying to be contrary, but there is some logic in keeping the stock crank, such as having that much money left for other things.
The stroker crank increases your displacement by 8.5%. In a perfect world that would be 8.5% power, but you can gain 8.5% power other ways, like a better supercharger, better heads, or put that big crank money into other things further down the line in the car.
The stock crank is very strong, capable of supporting over 1000hp.
Just something to consider.
The stroker crank increases your displacement by 8.5%. In a perfect world that would be 8.5% power, but you can gain 8.5% power other ways, like a better supercharger, better heads, or put that big crank money into other things further down the line in the car.
The stock crank is very strong, capable of supporting over 1000hp.
Just something to consider.
I am not trying to be contrary, but there is some logic in keeping the stock crank, such as having that much money left for other things.
The stroker crank increases your displacement by 8.5%. In a perfect world that would be 8.5% power, but you can gain 8.5% power other ways, like a better supercharger, better heads, or put that big crank money into other things further down the line in the car.
The stock crank is very strong, capable of supporting over 1000hp.
Just something to consider.
The stroker crank increases your displacement by 8.5%. In a perfect world that would be 8.5% power, but you can gain 8.5% power other ways, like a better supercharger, better heads, or put that big crank money into other things further down the line in the car.
The stock crank is very strong, capable of supporting over 1000hp.
Just something to consider.
Boring and stroking weakens the block and adds additional stresses to the rotating assy. Its not the way to go without a whole slew of aftermarket parts IMO. (including a block) The deck isn’t tall enough for a big stroke and the pistons rend to rock and wear prematurely as well. If you have an aftermarket tall deck with tons of meat between the cylinders, go for it!
Basically your basically ruining a stock block setup that way IMO. Adding a bunch of expense and down time for nothing. Add an aftermarket blower and be done. Cheaper in the long run. Cheaper still to throw a turbo on it…. But I get that’s not for everyone.
Basically your basically ruining a stock block setup that way IMO. Adding a bunch of expense and down time for nothing. Add an aftermarket blower and be done. Cheaper in the long run. Cheaper still to throw a turbo on it…. But I get that’s not for everyone.