Solid LS2 w/ TSP L92 and 11.5:1
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 91
Likes: 0
From: OKC
Solid LS2 w/ TSP L92 and 11.5:1 This is what I am planning:
LS2 short block w/ better rods
TSP L92 heads milled/gasket combo to yield 11.5:1 static if possiable
Solid Roller Lifters
I am wanting you imput about a manifold and cam selection. I am wanting to run the LS7 manifold. Would the L76 be better for me? Also any thoughts on cam selection...I defently want to stay with a solid lifter. Any overall thought/comments (other than I am sticking a LS motor in a german car)?
It's going in a '98 BMW M3 and will weigh about 3150 lbs with the LS2 and T56. I am needing some input about the motor b/c I am not a GM guru. I only drive this car for fun...but want it to be streetable. Since the car is fairly light I am not too conserned with low end torque, but do want it to scream up top! I want a redline of 7000+ also.
LS2 short block w/ better rods
TSP L92 heads milled/gasket combo to yield 11.5:1 static if possiable
Solid Roller Lifters
I am wanting you imput about a manifold and cam selection. I am wanting to run the LS7 manifold. Would the L76 be better for me? Also any thoughts on cam selection...I defently want to stay with a solid lifter. Any overall thought/comments (other than I am sticking a LS motor in a german car)?
It's going in a '98 BMW M3 and will weigh about 3150 lbs with the LS2 and T56. I am needing some input about the motor b/c I am not a GM guru. I only drive this car for fun...but want it to be streetable. Since the car is fairly light I am not too conserned with low end torque, but do want it to scream up top! I want a redline of 7000+ also.
Last edited by M3 Muscle; Dec 15, 2006 at 05:41 PM.
I don't think you have much choice on intake. L76 or a funky sheet metal. Solid roller is going to be fairly hard core and not sure what you will get from it. Others will dissagree.
If you only want to spin it 7K there is no need for a solid lifter setup.
The L92 setup isn't truly tested yet (dyno/track comparisons). I would sit back until the dust settles.
Currently the LS7 intake outflows the FAST 90 intake (this hits a roadblock in flow at around 6600rpm). The LS7 will flow well beyond 7K; however it needs LS7 heads.... and namely a 4.125" bore (the LS2/L92 block aren't big enuf). You can get some custom ETP LS7 heads that work with this block though (plan on waiting a while).
The intake for the L92 heads.... the verdict isn't really in whether it kicks *** over the FAST 90 or not.
This type of powerplant in your BMW should rip. Even with a big cam that may soften the bottom end power... the car will move along nicely. I have this style cam with AFR 205 heads (233/239 .600/.603 112LSA cam) and rev it to 7100rpm on a stock LS1 shortblock (with upgraded rod bolts).
It boils down to what your budget is. A 402/416 based stroker setup will be about $4-6K cheaper than building a resleeved LS2 427 or LS7 427. Which makes maybe 30-40rwhp more.
Run as much compression as you can for the gas you plan to run.
The L92 setup isn't truly tested yet (dyno/track comparisons). I would sit back until the dust settles.
Currently the LS7 intake outflows the FAST 90 intake (this hits a roadblock in flow at around 6600rpm). The LS7 will flow well beyond 7K; however it needs LS7 heads.... and namely a 4.125" bore (the LS2/L92 block aren't big enuf). You can get some custom ETP LS7 heads that work with this block though (plan on waiting a while).
The intake for the L92 heads.... the verdict isn't really in whether it kicks *** over the FAST 90 or not.
This type of powerplant in your BMW should rip. Even with a big cam that may soften the bottom end power... the car will move along nicely. I have this style cam with AFR 205 heads (233/239 .600/.603 112LSA cam) and rev it to 7100rpm on a stock LS1 shortblock (with upgraded rod bolts).
It boils down to what your budget is. A 402/416 based stroker setup will be about $4-6K cheaper than building a resleeved LS2 427 or LS7 427. Which makes maybe 30-40rwhp more.
Run as much compression as you can for the gas you plan to run.
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 91
Likes: 0
From: OKC
Originally Posted by See5
Solid roller is going to be fairly hard core and not sure what you will get from it. Others will dissagree.
Teching In
Joined: Nov 2006
Posts: 37
Likes: 0
From: Nevada
I agree, wait till all of the R&D is done on the L92/L76 set ups as am sure there will be different tried and true packages out there. Likewise, I'm sure you'll have a couple of options for what you are trying to build.
TECH Fanatic
Joined: Mar 2004
Posts: 1,017
Likes: 0
From: Laguna Niguel, CA
Why are you so fascinated with a certain redline?
Power is power whether it is at 6500 RPM or 7500RPM.
If you really want a spinner motor check out the sneak attack 5.7 on Katech's web page. (Sponsor section on the right----->)
I think it goes to 8500RPM. It is a large bore short stroke motor and can rev to the moon.
Power is power whether it is at 6500 RPM or 7500RPM.
If you really want a spinner motor check out the sneak attack 5.7 on Katech's web page. (Sponsor section on the right----->)
I think it goes to 8500RPM. It is a large bore short stroke motor and can rev to the moon.
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 91
Likes: 0
From: OKC
Originally Posted by gun5l1ng3r
Why are you so fascinated with a certain redline?
Power is power whether it is at 6500 RPM or 7500RPM.
If you really want a spinner motor check out the sneak attack 5.7 on Katech's web page. (Sponsor section on the right----->)
I think it goes to 8500RPM. It is a large bore short stroke motor and can rev to the moon.
Power is power whether it is at 6500 RPM or 7500RPM.
If you really want a spinner motor check out the sneak attack 5.7 on Katech's web page. (Sponsor section on the right----->)
I think it goes to 8500RPM. It is a large bore short stroke motor and can rev to the moon.
Trending Topics
You need more tire out back bottom line. Custom rims should allow a bit more tire. If you aren't willing to put down more tire for that much power... it will be a waste of time.
I'm planning on putting a 335/18 out back to handle the power a built LS7 can generate (550-575rwhp) on my RX-7. You will need something similar with 500rwhp+ bottom line.
What gear ratios are available for the M3 out back in the diff? Messing around with that may be able to lessen the torque multiplication and help put the power down.
If you really want to spin it to 7500 often plan on breaking some parts. RPM's kills motors bottom line. You will be going thru valvesprings often as well.
I'm planning on putting a 335/18 out back to handle the power a built LS7 can generate (550-575rwhp) on my RX-7. You will need something similar with 500rwhp+ bottom line.
What gear ratios are available for the M3 out back in the diff? Messing around with that may be able to lessen the torque multiplication and help put the power down.
If you really want to spin it to 7500 often plan on breaking some parts. RPM's kills motors bottom line. You will be going thru valvesprings often as well.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
My LS2 403 L92 L76 is costing a lil shy of $7000 fwiw. If it makes more than 500rwhp i'm happy. I too, will be on 335 tires, and my stock LS6 would break those loose at 100+mph. You MIGHT be able to get away with a 255 tire, if you were using BFG drags or mickey t's, but then you can forget driving it in the rain.
My vote for you would be Katech's 5.7L I bet that thing is a freaking screamer!
My vote for you would be Katech's 5.7L I bet that thing is a freaking screamer!
