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i did a search on ls1tech and those are the numbers i got
Na, just forget it.. I don't think anyone really understood what I was talking about so, my bad? Ya know how you have to reference sources when doing like a report at school? Don't worry about it though, I really could care less anymore.
GM used the LS3 block as the starting point for their ZR1 for a reason;reliability. While the LS7 makes a great NA motor, there just isn't enough metal between the cylinder bores to make a long-lasting production FI motor. The increased cylinder pressures that come with the supercharger would stress an LS7 too much to be considered as a production block.
Remember that GM isn't producing a wicked-sick end-all motor that will make huge numbers. They designed a high horsepower powerplant that will last without much failure.
The LS9 is a fully beefed up engine to handle the rigors of forced induction. The LS7 is built with parts to sustain the rigors of NA aplications.
Nowif you started with an LS7 and LS9 and fully built each engine with top parts, and installed identical turbos or whatnot, displacement would most likely win and the LS7 would be the faster of the two. But for someone with a lot of money on their hands that wants a really fast production car to leave stock, the LS9 would obviously be the better choice.
Think; will your hot-rod LS7 still have a warranty after you're done with it?
i've read maaaany-a-article about gm's decision to step back to the ls3 block over just "pulling a dodge" and stuffing the most displacement as possible under the hood. it makes sense.
and z38, hell, if we're going to talk about money saving why not take an old stingray vette, restore the body for a few grand, and drop a ls7 in it and save nearly all of the cash for modding? we could play that logic all day long and get nowhere.
point above all else, the ls-series engines are fantastic and any vette is a potential powerplant on wheels---look at the zr1, it can keep up with the boeing f/a-18 blue angel jet (actually a bit ahead of it for a while) up to 80mph---thats just nasty.
The early LS7 engines had problems with eating up their tiatium retainers and trashing their engine. My Dad said GM was going to hold off on this info as long as they could since they didn't want to replace $22,000 engines. He had 2-3 that had new engines installed before he retired. It was a machining error when the engine were assembled.
08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine
i believe the ls7 shares a common oil pan with the ls9, but the 9 has a different design oil cooler and delivers a higher capacity for the zr1's needs.
but no, the ls7 uses a dry sump system and IIRC it utilizes an 8-quart reservoir that delivers oil at a constant pressure to a conventional style oil pump pickup at the bottom of the engine instead of the jet per cylinder piston cooling introduced in the ls9.
GM used the LS3 block as the starting point for their ZR1 for a reason;reliability. While the LS7 makes a great NA motor, there just isn't enough metal between the cylinder bores to make a long-lasting production FI motor. The increased cylinder pressures that come with the supercharger would stress an LS7 too much to be considered as a production block.
Remember that GM isn't producing a wicked-sick end-all motor that will make huge numbers. They designed a high horsepower powerplant that will last without much failure.
The LS9 is a fully beefed up engine to handle the rigors of forced induction. The LS7 is built with parts to sustain the rigors of NA aplications.
Nowif you started with an LS7 and LS9 and fully built each engine with top parts, and installed identical turbos or whatnot, displacement would most likely win and the LS7 would be the faster of the two. But for someone with a lot of money on their hands that wants a really fast production car to leave stock, the LS9 would obviously be the better choice.
Think; will your hot-rod LS7 still have a warranty after you're done with it?
z38, listen to this guy, he seems to know what the **** he is talking about. Learn from him. And stop posting false information, its really starting to piss everyone off. Again, I will state, I would rather have 2000 smart intelligent members than 11,000 that have no clue what the **** they are talking about.
1995 Pontiac Firebird
2008 Chevrolet Silverado LT Crew Cab 4x4
Not much going on, replaced my Kenwood double din stereo with a Pioneer double din, the Kenwood had problems. Then replaced my power inverter for my reverse...
4 weeks ago
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