Sv6 to LSA conversion

[monty_vfssv]

LT4/5...6.2 Hemi in hellcat/demon form..?

Aren't the LT4/5 engines known for there reliability??

which backs up the fact that the LSA isn't "conservatively built, tuned and configured for reliability" reasons.

 

[tml678]

Aren't the LT4/5 engines known for there reliability??

Well, no not exactly..at least the LT4 isn't

https://www.torquenews.com/106/corvette-z06-owners-file-4th-class-action-suit-over-cooling-issues
http://www.hsvforum.com.au/archive/index.php/t-14616.html
https://www.camaro6.com/forums/showthread.php?t=427049

which backs up the fact that the LSA isn't "conservatively built, tuned and configured for reliability" reasons.

Isn't or Is?? Your posts are a bit contradictory, because you also said this:

All OEM engines are conservatively built and tuned with reliability in mind

 

[lordsnipe]

thats cool.. so the LF4 makes 1.3kw/L more than an LSA

And also unlikely that a LFX with supercharger could make 400kw unless it had a crazy amount of boost, which is already limited due to its higher compression ratio than the LF4.

 

[EYY]

Aren't the LT4/5 engines known for there reliability??

which backs up the fact that the LSA isn't "conservatively built, tuned and configured for reliability" reasons.

All to do with target market, environment and conditions the vehicle will be operating under (low octane fuels, towing, heavy traffic in 45 degree heat- all with decent service intervals). It’s everything to do with reliability and warranty from new. Safety and fuel economy also play a major part.

LSA Runs low boost and a conservative camshaft profile. Doesn’t take much money or effort to change that.

The LS platform is the clear winner when it comes to ease of performance upgrades and cost/availability of aftermarket performance parts.

 

[monty_vfssv]

And also unlikely that a LFX with supercharger could make 400kw unless it had a crazy amount of boost, which is already limited due to its higher compression ratio than the LF4.

Why more boost? the LFX is more efficient so would require less boost.. and like I said earlier, dynamic compression can be altered with continuous variable valve timing.

An LF4 will make 420kw (engine) with an air filter cat back and tune.. so again very conservatively tuned by GM.

All doable but obviously easier with more displacement.

 

[lordsnipe]

Sorry, don't see it happening unless the LF4 tune is woeful.. manufacturers don't leave that much headroom anymore. Anyway OP mentioned 400kw from supercharger, intercooler and tune, no mention of exhaust, extractors, fueling, intake etc.

 

[monty_vfssv]

Sorry, don't see it happening unless the LF4 tune is woeful.. manufacturers don't leave that much headroom anymore. Anyway OP mentioned 400kw from supercharger, intercooler and tune, no mention of exhaust, extractors, fueling, intake etc.

Really? have you seen what an LSA makes with a tune and intake?

 

[monty_vfssv]

Well, no not exactly..at least the LT4 isn't

https://www.torquenews.com/106/corvette-z06-owners-file-4th-class-action-suit-over-cooling-issues
http://www.hsvforum.com.au/archive/index.php/t-14616.html
https://www.camaro6.com/forums/showthread.php?t=427049



Isn't or Is?? Your posts are a bit contradictory, because you also said this:

Yeah sorry, what I mean is the LSA isn't conservatively tuned just to make it more reliable.. it's a well known slug in its stock form (alot of disappointed owners at the dyno).. and as you are well aware, can be made to be alot more efficient with some very basic mods.. intake and tune will see an increase of 40-60kw at the engine, and that can be done without ANY compromises to safety or reliability (LSA owners now smiling at the dyno) Your simply making the engine more efficient, as the stock tune is very conservative.

The reason GM caps kw output on every engine is due to what market it's going into. Take the LS3 for example, used for HSV as a high performance, high end type engine with 340kw and also used on the vf2 at 304kw.. both have the same reliability just tuned differently as GMH can't have a base model outshine an HSV. Much the same with the LSA/LS9. But yes there is alot left in the LSA as it's very conservative tuned.

 

[abuch47]

Who needs an LSA, ran a modified GTS off the line today and we both bogged poorly with to much spin not enough throttle feather. But yes I need an LSA as his rolling pulls at any stage were ridiculous.

 

[lowandslow]

Isn't this thread about old mate blowing heaps of coin turning an sv6 engine into even more of a grenade?