jetsetter
Forum Addict
Notch another one for the small block.
LS7.R named the Global Motorsport Engine of the Year
- Thread starter jetsetter
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Notch another one for the small block.
jetsetter
Forum Addict
The LS7.R is the race engine and the production LS7 features were pioneered on race vehicles.
Vitamin J
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27 billion horsepower!
superchevy
Well-Known Member
^ @ an appx. average of 300hp per engine.
thedguy
rides with Rebecca Black.. in the back
But the HP/liter, and the pushrods! PUSH RODS FOR GOD SAKE!!! 
If I'm not mistaken the 427 blocks ARE the race blocks. So that isn't exactly "race inspired."
If I'm not mistaken the 427 blocks ARE the race blocks. So that isn't exactly "race inspired."
niteriyder
Active Member
jeh
Vitamin J
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The Z06.R's engine's only differences between itself and the LS7 is no catalytic converters or butterfly valves and an ECU tuned for race gas. It has been unbeatable in FIA GT recently.But the HP/liter, and the pushrods! PUSH RODS FOR GOD SAKE!!!
If I'm not mistaken the 427 blocks ARE the race blocks. So that isn't exactly "race inspired."
GraemeH
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It's a great engine from what i know, there are a good few projects to plant LS's into TVR's over here in the UK, Cerberas mostly.
kaBOOMn
Well-Known Member
The thing is, we are in a era of electronics rather than whats inside the motor and for all the shit that everybody gives GM they really are ontop of this stuff.
All the construction techniques etc that go into this motor and the like you suddenly realise that even tho its a pushrod motor its all the way up there! The other things like it weight and the like are something that very few people touch on, but for what it is, its pehnominal. Even motors like the LS1 earn my respect.
For example I love my Nissan RB (Skyline) engine in my Holden, but I have to face facts that even tho its a double overhead cam motor with 24 valves, for its weight its a piece of s**t with a piss poor powerband......
As for the HP/Litre, it should be AIR DISPLACEMENT PER LITRE stupid idiots.....
All the construction techniques etc that go into this motor and the like you suddenly realise that even tho its a pushrod motor its all the way up there! The other things like it weight and the like are something that very few people touch on, but for what it is, its pehnominal. Even motors like the LS1 earn my respect.
For example I love my Nissan RB (Skyline) engine in my Holden, but I have to face facts that even tho its a double overhead cam motor with 24 valves, for its weight its a piece of s**t with a piss poor powerband......
As for the HP/Litre, it should be AIR DISPLACEMENT PER LITRE stupid idiots.....
thedguy
rides with Rebecca Black.. in the back
Personally I think any of that is retarded. If anyone wants to argue useful points how about Fuel Economy per HP or HP per Weight or Fuel Economy per HP per Weight?
BTW, I've heard the RB motors weigh in the area of 700lbs (about 320kg?) I just can't remember if thats with or without a trans, if it's without, a 70's Big Block is lighter and far more power capable.
I fear having brought this up is going to bring out the morons, so I will save some face by claiming to be trying to have a legitimately serious discussion on this subject.
Salar
Well-Known Member
LMAO. That means alot from somebody with a Skyline avatar.
Actually It's a Nissan GTR not a Skyline.. And i don't have a pic of mah Volvo!! 8)
ed. Happy now?
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kaBOOMn
Well-Known Member
I can weigh it if you want, but which RB? lol, there are quite a lot of diffrent types! erm I think from memory a old RB20DE came in around 220kg without a trans....don't quote me on that, I'll double check for you.
I've only had a look once in my life at a Chev smallblock (LS1) out of a Holden VX Commodore Ute and I was impressed. Much more compact and felt a lot lighter on the engine crane....then again that may be because of the ungainly dimensions of the RB engine. RB's are by no means unkillable, lol to tell you the truth they seem to die quite a lot. :lol: I think the main problem is that once you put the twincam heads on RB's the weight distribution of the motor goes top heavy. You may mock pushrods (I do!
) but you can't argue with the fact as far as motor weigh distribution goes they are the best thing out there (just don't include boxer engines!)As for RB gearboxes there are 3 main types (in manuals), one light weight box and the two heavy duty boxes. The Automatic gearboxes are very very very heavy, again depending on what type.
I know, I've had my arguments mostly with young Americans who can't drive yet and have been brought up on a diet of the "mythical" Skyline with its "unkillable" engine and they can't seem to understand that nothing is unkillable nor unbeatable. They will not pull 750kw (1000ish HP) out of a stock motor....lol what a joke.....:lol: :lol:
thedguy
rides with Rebecca Black.. in the back
I've jumped on the Skylines Oz forums and NZ skylines site a few times. A friend of a friend owns one of the skylines used in the American Touge (at least if it's the same GT-R I think it is).
The RB I was talking about was the RB26, thats the one most people in the US will jerk off at the mere utterance of its name. I think the guys doing RB swaps in 240's/silvia/(wtf ever you want to call it) here in the US are stupid, parts aren't all that common, and it's a heavier longer motor. I may be sick of hearing "SR20 swap" but it makes far more sense in than a damn RB engine, at least if something breaks on an SR20 there is a chance the local autozone may have the part you need in a pinch.
One of the first things I read on both of those forums was the cheap mods guys do, and the fact that either the pistons will burn up, or the rods crush like a 4 year old under a bus above 450hp. The more I read on there, and the more I've seen on TV shows in the US involving "tuner" versions of the GT-R's, the less I think they are really anything that special. At this point I want to drive one to see what all the fuss is about. I'd wager a tuned FD or FC would be far funner to drive though.
I don't mock Pushrods, I'm usually one to defend the 'vette (though I don't think it's some unbeatable ungodly machine). OHC's have their benefits, small dimensions is not one of them. The small block became popular in the first place because of it's small size or better put Power to weight/size ratios. And no matter how bad anyone tries, can anyone honestly say the modern SBC (LSx engines) are bad after having driven them? Even the Anti-American Clarkson loves it.
I'm curious to see if GM ever produces the Dual cam Engine they've been testing. It still has pushrods but allows the proper use of variable valve timing. Though they are apparently playing with 3 and 4 valve cylinder heads that are still pushrod actuated. Not surprising there though, American Diesel engines have been doing that for decades.
The RB I was talking about was the RB26, thats the one most people in the US will jerk off at the mere utterance of its name. I think the guys doing RB swaps in 240's/silvia/(wtf ever you want to call it) here in the US are stupid, parts aren't all that common, and it's a heavier longer motor. I may be sick of hearing "SR20 swap" but it makes far more sense in than a damn RB engine, at least if something breaks on an SR20 there is a chance the local autozone may have the part you need in a pinch.
One of the first things I read on both of those forums was the cheap mods guys do, and the fact that either the pistons will burn up, or the rods crush like a 4 year old under a bus above 450hp. The more I read on there, and the more I've seen on TV shows in the US involving "tuner" versions of the GT-R's, the less I think they are really anything that special. At this point I want to drive one to see what all the fuss is about. I'd wager a tuned FD or FC would be far funner to drive though.
I don't mock Pushrods, I'm usually one to defend the 'vette (though I don't think it's some unbeatable ungodly machine). OHC's have their benefits, small dimensions is not one of them. The small block became popular in the first place because of it's small size or better put Power to weight/size ratios. And no matter how bad anyone tries, can anyone honestly say the modern SBC (LSx engines) are bad after having driven them? Even the Anti-American Clarkson loves it.
I'm curious to see if GM ever produces the Dual cam Engine they've been testing. It still has pushrods but allows the proper use of variable valve timing. Though they are apparently playing with 3 and 4 valve cylinder heads that are still pushrod actuated. Not surprising there though, American Diesel engines have been doing that for decades.
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Wizegui
Well-Known Member
Some cars just dont have room for pushrods because of their large physical size. I will admit though that the LS7 is one hell of an engine. Light, powerful, torquy, what more could you possibly want?