NED4SPD

How much would it cost to build a the 7.0 Litre C5R block with the best parts and so I have some serious power. Cuz I am debating on doing ARE heads and cam and a superchatger or build one hell of a engine. Also could I bore the C5R block bigger or stroke it?? I would like something to be strong so I can supercharge it later. Thanks

McGuire Performance

My guess would be $17,000-20,000.

McGuire Performance

My guess would be $17,000-20,000.

Pro Stock John

iTrader: (34)

Best price I have seen on the bare block is from our GM sponsor SDPC... $6100. Figure another $4K for the pistons, rings, rods and crank.

NED4SPD

Ok wait wait wait... $15 000 out the door?? US or CDN?? Cuz if thats US that will be like $25 000. How the hell can a engine cost that much?? I could get more horsepower with $10 000 doing heads cam and a supercharger.

30th TA 0219

sorry to say, that's not a whole lot. It's a whole lot to me, but not for thyese motors. You said the best of everything, so if you really meant that, add C5R Heads, and you're up in the $50,000 USD range.
H/C + SC will get the HP # you want, but at the cost of longevity and dependability of a stout C5R based motor/forged bottom end.

NED4SPD

I still can figure out why it is so much. I know GM has a hight mark up but my buddies around here have had carburated engines built and have made crzy power and they have been strong as hell for only $10 000 CDN. Should I go out and build a carburated big block?? What about the ARE 422? How strong are those gonna be when they bore and sleve my 350? What if I get normal heads instead of the C5R <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

30th TA 0219

You can't compare a an old-school carb'd SBC/BBC to a modern EFI LSx motor!! <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />
That $15-17k price was for normal heads!! C5R heads are what? $15G or something sick like that!??! Then a custom intake, might as well put a FAST DFI sytem on...etc Look at the lingenfelter C5R motored cars, like the TT Sonma, over $100,000 for the motor <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Colonel

"and you're up in the $50,000 USD range."

"That $15-17k price was for normal heads!! C5R heads are what? $15G or something sick like that!??! Then a custom intake, might as well put a FAST DFI sytem on...etc Look at the lingenfelter C5R motored cars, like the TT Sonma, over $100,000 for the motor"

Dude, you are WAAAAAAAAAAAY, WAAAAAAAAAAAYYYYYY, WAAAAAAAAAAAAAAAAAAAAAAAAAAAYYYYYYYYYYYYYYYYYYYY off here! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

C5Rs aren't cheap but they are nowhere near THAT expensive! PSJ was right about the block being $6100 from SDPC. I paid $6600 for mine (just before I found out about SDPC's price.) <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> The Speed-pro system is about $1500-2000, the intake about $2000-2500, the titanium valves are about $1500 or so, I forget the price on the heads, misc. stuff and rotating assembly plus you have the fuel system, and labor, but you can plainly see that you're nowhere in the range of $50,000! You could probably build two of them for that.

Skelton

6100-block
6000+ for heads assembled and port work
4000 rotating assembly
2000 custom intake
1200 T&D rockers and pushrods
1000 roller cam,lifters, chain.
2000 machine work and assembly
500-600 50-72 lb injectors
450 ati balancer
1000+ misc, oil pump, studs, gaskets, etc.

These motors can run an easy 25k. Then you need the fuel system, tuning, headers, etc. Not cheap but should make serious power.You can buy turn key 1200hp+ hemi's and big chevy's for that but then its not ls1 anymore. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

The Derek H

Y2K Blackbird is pretty close on pricing. Only real difference is you can't use the T&D Rockers because the valvetrain geometery of the C5R heads are different and require you use a set of Jesel rockers designed especially for these heads. They run around 1,750. Also like someone said above it requires that you run titanium valves. These add about another 1,800 or so to the porting price. So closer to 8,000 for heads, porting and cores. The cores alone are over 2,400 and all the porting offers I have are more than normal LS1 porting.

Black Sunshine/ 00SS

iTrader: (1)

Cant you just use plain LS1 or LS6 heads and intake on the CR5 block?

Quickin

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Black Sunshine/ 00SS:
<strong>Cant you just use plain LS1 or LS6 heads and intake on the CR5 block?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, but then why waste the money on a C5R block? It offers ZERO power gains over an LS1 block. The only benifit of the C5R block is that it can be resleeved, thats it! It does nothing for you on the dyno or the strip. I was going to get one and I was told by all the shops its a pure waste of cash. Unless you want that insurance about the resleeving. I don't care because I have a 2yr/24,000 mile warranty anyway with my LS1 block stroker. If something happens the car will down an equal amount of time regardless of which block it is.

Colonel

"The only benifit of the C5R block is that it can be resleeved, thats it!"

...AND, it's a helluvalot stronger. It'll take more power than an LS1 block...which of course only matters if you're planning on making insane amounts of power. So, if you're not then yes, the C5R is pretty much a waste of $$$.

DERTY

Colonel, I can understand that if the block has more mass around it you can build up some strength. But isn't there still the issue that the bores are still on the same centers as the stock LS1. Which in turn makes the minimum wall thickness between the cylinders smaller? If they were different I can't see how you can use the stock heads on them.

I'm just curious as to what physical characteristic makes the block any stronger. Or is it simply stronger everywhere except the distance between bores.

ZYA_LTR

I wouldn't even consider doing the C-5R route unless you were serious about making some big power,,,,,,and doing it reliably. Yeah these are big ticket items, but they must work, GM and Katech use them in there Le mans cars, and those run for 24 hours straight, and we're not talking freeway driving <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" /> They get the hell beat out of them. If you are serious, i have both a C-5R Block (new), and a set of real C-5R heads, off an actual Le mans car, with the $1,800 titanium valves, $2,000 Jesel valvetrain, and god knows how much time in R&D on the port and polish of these suckers. I'm selling them, to make funds for other projects, namely a house, since it's getting to be that time. Email me if you are interested, i've got all kinds of parts lying around to put this motor together, like custom diamond racing blower pistons.