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:LOL::LOL::LOL: Best post of the day... Priceless. |
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Only 1000 hp? Heck, there are all kinds of LS engines pumping out 1400 hp on E85 being driven on the street. You can take a boneyard 4.8 liter stock, throw in a cam and bolt on a turbo and get over 700 hp easy. |
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As far as the LS heads, specifically the LS3 and the LS7, being copys of the Cleveland... I don't buy it. I see more similarity to the 18 degree and its derivatives. If anything, the SB2 with canted valves is closer to the Cleveland than the LS. |
I'm not the first one to notice it, think it, or mention it.....but it's usually the Chevy guys who complain about the notion of it....hahaha
Y'all have a good night. |
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I can only assume that beyond the original 23 degree SBC design, you don't understand the differences in SBC heads, or how and why they were developed. |
Even 'way back in the day, I was very impressed with the old Boss 302 Cleveland heads. They didn't do much at low end, but they sure liked to breathe at big Rs. Thought they sure looked like BBC heads, at the time. 'Uge Uge ports.
Seems like the really serious SBF racers figured out a way to adapt them to the far superior Windsor block. Folks that don't have the funds for the latest and greatest have so many times adapted the best parts from various badges and have come up with surprisingly good results. |
Cleveland heads have always been renowned for their bad exhaust port design. I remember reading years back something about it being a design compromise to get the exhaust manifolds to fit in between the shock towers. Ideally they wanted the port to be much higher.
Racers used to machine the whole exhaust port off the head ad replace it with a new aluminum plate with raised exhaust runners. http://www.sbftech.com/img/cleveland-plates.jpg Gains can be made by putting port tongues in the exhaust ports to lift the port floor and make it D shaped. There's huge potential in the Cleveland heads but you guys in the US didn't get to see much of it as the motor was dropped in the early 70's. Australia kept going with the 351C in Ford sedans right up until the mid 80's. As a consequence we now have companies like CHI and others making some amazing heads for these motors. |
Love the CHI stuff. Use a ton of their heads and intakes. Any Cleveland part coming out of Australia is going to be good.
http://i170.photobucket.com/albums/u...psbdbazcqo.jpg Also have a set of early Boss 302 heads here with the plates and tongues.... And...I've prob seen more sb2 stuff than Scott.... ;). But we werent talking about 18 degree heads, sb2, etc., we were discussing the LS engines. |
Faaaaarrrrrkkkk Mikey, really didn't mean to start such a ****e storm!! :eek:
i only stated the facts a way an engineer not a mechanic or enthusiast would look at it ! i.e: hp per litre & hp per kilogram ! AT NO POINT was it mentioned which is cheaper to get hp from or anything else for that matter ....like maybe which is the better boat anchor etc. At the end of the day what YOU LIKE is what suits YOUR application and if your happy with it nothing else matters to anyone but YOU :cool: |
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i cant decide if i should get a Windsor built up or put a Coyote in it. An LS just seems like half way between the two. Not old school and not school - twin cam head with VVT. but that's me. mine will be going into a 40, so i need to think about gearbox and finaldrive availability. want something that will cruse at 100km/h, as well as move when in the power band and not drop out of it on gear changes. Ryan |
It's a new Dart Windsor block.....the one in the video is 451 cubes.
The one is my picture up above is a 434 inch Clevor based on a Ford Racing 351 block. |
Thanks, still trying to get my head around the options for engines. currently tossing up between a built Windsor or Coyote. The video that mike linked sugested that the coyote was short on capacity. sounds like they can take them out to 5.7L (351ci) so that would help a little, however by that stage would you be up around the cost of a built 427/434/451 as shown below?
if that's the case would it start to swing back to the old school direction? |
I would base it on your horsepower requirements, what rules/regulations your location has, and your budget.
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I think we are all grown up enough here to see the Pluses and minuses of each option and it's not always about max power numbers. These cars are a big part emotion. I've said many times that I reckon over 400HP is probably a waste in a Cobra and both of these motors far exceed that. Keep the discussion going. Cheers |
400hp lol.
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Did any of you ever see the Chev RO 7 head?
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Yes sir, I have.
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Have you used them on a build??? I have a project but its going slow--
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No sir, have just had my hands on a set of heads. Had T&D non adjustable rocker arms.
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Do those heads even fit on anything but the specific block for the engine. The heads are cheap because they don't fit in anything but the expensive designated block???
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