Cobra Make, Engine: absolute pace chassis #50 L98 & 6 speed auto
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so what model ls heads are the copy of the cleavo heads ? not the cathedral style port and the inlets look a lot bigger than the square port ls heads i will ask my engine builder on tuesday if the ls heads bolt up he usually has ls and ford engines on the floor waiting to be built or to be picked up ........go those ford engines only 2 in the top ten that finished bathurst today i think it was 7 ls engines one volvo and one merc..
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a cobra is a passion anything else is just a car
i dont care what the question is .. The answer is more power!!!
Ummmm all V8SC use the same engine....and the same chassis.
I think that was the Car of the Future scheme they are running in NZ. All the same chassis and all running a version of the chev LS7 motor.
I think the chassis are same now so that Nissan, Mercedes and Volvo can graft their own bodies on but they are running versions of their own motors built to fit the 5.0L capacity limit.
Cobra Make, Engine: absolute pace chassis #50 L98 & 6 speed auto
Posts: 1,141
Not Ranked
Quote:
Originally Posted by Aussie Mike
I think that was the Car of the Future scheme they are running in NZ. All the same chassis and all running a version of the chev LS7 motor.
I think the chassis are same now so that Nissan, Mercedes and Volvo can graft their own bodies on but they are running versions of their own motors built to fit the 5.0L capacity limit.
The Volvo V8SC engine looks pretty cool
Cheers
that is a nice looking engine pity they lunched one yesterday tho
__________________
a cobra is a passion anything else is just a car
i dont care what the question is .. The answer is more power!!!
The Holdens run the Aurora Gen 2 chev engine, have since the late 90s, we are the only compitition left that still run the short deck 302, GM designed for the 5L classes in the states, it has symetrical SB2,2 heads which are a 13 deg alloy head, control cam,crank, and heads
They experimented with a DOHC motor in the Corvette. It used heads designed by Lotus.
What they found though is that they could make a wedge style head that flowed just as well as the DOHC heads without the added complexity and weight. That SB2 head that Alffie mentions has a lot to do with it's design. Valve angles had been reduced allowing higher comps with a flat top pistons while keeping a better combustion chamber shape. The old SB chev had a 23 degree valve angle where SB2 is 13 degree and LS1 is 15 degree.
The result is a push rod engine that makes as much power as it's more complex DOHC rivals in a package that weighs significantly less and is significantly smaller.
The LS1 weighs nearly 100KG less than the Boss 290.
In width the LS1 is Scarlet Johansen compared to the Boss290 Magda Szubanski...
As for similarities between Cleveland and LS1... that doesn't surprise me. Bore spacings are common across quite a few motors out there and with the standard 4 hold down bolts per pot there aren't that many patterns and spacings to choose from.
Port design and valve sizing it doesn't surprise me that there are some common sizes. The experts have determined long ago that there is an ideal ratio between intake and exhaust valve sizes and cylinder bore sizes.
I'm just glad we don't have the Clevelands awful exhaust port design and over sized intake ports.
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