|12-18-2012 11:23 PM|
|cobalt327||R07 heads fit R07 block. The R0x heads can be looked at as an extension of the SB2.2.|
|12-18-2012 08:54 PM|
|1Gary||Pure eye candy|
|12-18-2012 02:26 PM|
Flip a page to see the combustion chamber really, really tight.
The SB 2.0 and 2.2 have moved down in class. Keep in mind that the SB engines like the ROx are designed to breathe into 9000 RPM and more providing sustained power at that level, not just bounce the tach to 9000 then retreat to somewhere lower. So these parts are not very streetable if that's what you have in mind.
|12-18-2012 02:23 PM|
R07 head on LS block? Ain't happening. Different bolt number/pattern, different bore centers, etc.
Probably the easiest way to see this by comparing the head gaskets. R07 top, LSx bottom:
|12-18-2012 12:45 PM|
|12-18-2012 09:24 AM|
|1Gary||NASCAR provides sealed controllers to the teams not to be altered in any way for the EFI systems and is unavailable to the general public.|
|12-16-2012 04:24 PM|
|lmsport||To lease an engine from Hendricks for 1 race, capable of qualifying on time, cost about $50k 6 years ago. For that money you got a tuner and a mechanic for the weekend. I would guess that price has doubled by now.|
|12-15-2012 10:16 PM|
Nothing on the R07 translates to the LSx engine. Nothing fits. Not the heads, crank, cam, nothing worth mentioning. GM says
The bore is not 4.5", the bore centers are at 4.5". Big difference- NASCAR has a bore diameter limit at about 4.185".
|12-15-2012 10:08 PM|
they are about 40k to lease give or take..
as long as you bring it back after the race in one piece
even if you get a parts list.. each team that has an engine program, gets the parts raw.. and put their own magic in them.. heads on a hendrick car will not look like a RCR head in the ports or chamber.. at this level.. every little tiny thing makes a difference..
when and if you see an RCR head on those used racing part sites. they've already move past that tech.. the ro7 that I has the honor of helping see built.. every port is different, the cam lobes are different for every cyl.. all to get as equal a/f to every cyl..
the parts list is the easy part, the labor put into everything is the difference..
|12-15-2012 07:38 PM|
|vinniekq2||The old heads had flow numbers over 400 cfm,I wonder what the heads flow now? 10,000 rpm needs air,lots of air|
|12-15-2012 07:28 PM|
SB2.2 heads are AMAZING. The flow numbers are incredible.
They are made for hi-rpm. And yes, they have been around a long time.
I seen a mid 90's Camaro with a 394cid SB2.2-head motor just devastate a 70 Nova with a 555cid Brodix-headed roller motor. The Nova had NO chance against the Camaro. I'm talking like a 15 car-length difference in the 1/4 mile. Neither car was running power-adders. The Camaro had a single 5" exhaust pipe out the back. It was one sick ride.
|12-15-2012 07:10 PM|
|1Gary||What I have seen in NASCAR is rough forgings for custom one of a kind in house builds.|
|12-15-2012 07:09 PM|
|vinniekq2||they use 200,000 one dollar bills times 10 engines. around 900 horse power. so almost every possible part we cant afford. lets me know when someone has a parts list,lol.|
|12-15-2012 04:51 PM|
|12-15-2012 04:25 PM|
The other manufacturers also have their own race-only NASCAR engines.
|This thread has more than 15 replies. Click here to review the whole thread.|