Want to build LSX 454 from Jegs

[Solid LT1]

Does anyone realize the LSX iron block weighs over 250lbs! Putting that big of a lump of iron in front will pretty much eliminate any potential of building a successful " Lateral G " machine....just my observations...what's a guy like me know?

[71RS/SS396]

Originally Posted by Solid LT1

Does anyone realize the LSX iron block weighs over 250lbs! Putting that big of a lump of iron in front will pretty much eliminate any potential of building a successful " Lateral G " machine....just my observations...what's a guy like me know?

Actually it weighs 230 lbs., I weighed it on a digital shipping scale but yes they are heavy.
Here's a list of blocks I've physically weighed myself

LS7..............107
RHS..............110
Dart Billet......128
6.0L Iron.......216
LSX..............230

[Solid LT1]

Well I guess if I break my LS3 it won't be able to be recycled for marine use...the LSX....that's another story

[Matt@BOS]

Originally Posted by Solid LT1

Does anyone realize the LSX iron block weighs over 250lbs! Putting that big of a lump of iron in front will pretty much eliminate any potential of building a successful " Lateral G " machine....just my observations...what's a guy like me know?

I'm not surprised that everyone avoids the LSX block because of its weight. I figured it would detract from the handling on my car. However, is it really any worse than an LS9. Once you factor in the weight of the supercharger, inter cooler, etc? Steilow seems to be able to get his nose heavy car around the track better than most...

[Solid LT1]

Originally Posted by Matt.A

I'm not surprised that everyone avoids the LSX block because of its weight. I figured it would detract from the handling on my car. However, is it really any worse than an LS9. Once you factor in the weight of the supercharger, inter cooler, etc? Steilow seems to be able to get his nose heavy car around the track better than most...

I don't have Steilows engineering ability or resources, I just like to try to build my efforts using the best of my knowledge. If I wanted a 600+HP motored car....I would be building a ERL sleeved aluminum turbo motor. I think the out put of my warmed over LS3 should be just fine if my stock 2009 Z06 is any indicator. I have a nice Gen1 377cu/in SBC with 43lb billet crank, Manley billet I beam rods, Mahle pistons, CNCd AFR 195cc heads, T&D shaft rockers, Isky tool room springs/EZ roll solid rollers, custom Comp Cam.....after buying my C6 Z06 I decided aluminum dry sump LS was the way to go...( having lost 3 sets of rod bearings auto crossing my accusump equipped Vette over the years ) The Gen1 motor was around a $10K investment on my part....it will make 550+HP my LS3 probably will not but, the oiling system reliability and weight loss over the front of the car were factors that made me abandon the GEN1.

The $4500 price of the 3K mile dry sump LS3 motor off racing junk led me to take " the LS pill " after going through the motor, I'm not that impressed with the quality of the platform as a whole because I love high RPM screemers and the oiling system layout of the LS leaves something to be desired for high RPM operation. The LS is a great 6500 RPM production platform but for 7000+ RPM use, I foresee some problem areas with the platform, they might not present a problem to a guy running a 1/4 mile at a time but multiple laps at sustained RPMs on a Road Race or Autocross course will bring these deficiencies to light. The internal block castings are pretty nasty, many hours of detailing with a die grinder were done by me to my LS3 block, GM did a much better foundry job on the LS1 engine case. I see plenty of members telling of their needs for 700+HP motors in their builds, my personal experience from owning a 505HP Z06 ( replaced our C5 Z06) tells me my older C3 chassis will have all the power a guy like me can use.

In my book there is nothing " Lateral G " about a 200+ pound lump of iron sitting in the engine compartment. Then again what the heck does a guy like me know, I ran a " too small " Holley 650CFM double pumper on my factory LT-1 hi rise intake in my 12.28@117MPH LT-1 ( it only ran a 12.60@113 with cast iron exhaust manifolds on it! ) through the mufflers.