1- what is the bore size of this block?

2- what is the maximum overbore?

3- is it iron block or aluminum?

4- what is the maximum stroke for this block?

5- how much does it cost?

6- where can i get it?

thanks

 

http://www.sdpc2000.com/cart.asp?act...=1978&pid=8227

Has some info on that block. It sure is a pricey block! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I'd still like to know how long a stroke and how much overbore it can handle....

It says it comes with a 4.125" bore and can handle a 4" stroke w/o machine work, but I'm wondering what about with machine work? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RAGEman:
<strong>I'd still like to know how long a stroke and how much overbore it can handle....

It says it comes with a 4.125" bore and can handle a 4" stroke w/o machine work, but I'm wondering what about with machine work? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">RAGEman,
Can be safely bored to 4.200".
Also, as with LS1 blocks, can take a 4.25" stroke, such as Lunati sells.
In this configuration, = 471 cubic inches.
Rod length is NOT an issue with big (relatively) stroke crank, such as this. Ring package is more to be taken care of though. Gas port your pistons...if a serious street/strip, but mostly strip car.
You can sleeve an LS1 block to that dimension also, but the C5R block is made of superior aluminium, plus billet main caps, etc. Remember, the cylinder housing (block) is the cornerstone of your engine program.
Cheers <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RAGEman:
<strong>I'd still like to know how long a stroke and how much overbore it can handle....

It says it comes with a 4.125" bore and can handle a 4" stroke w/o machine work, but I'm wondering what about with machine work? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">4.160 and probably 4.25 for the stroke

 

I was planning on posting this same question. <img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" />

 

Salam Abdullah

How are you ?? maaaaaaaaaan C5-R block marrah wa7dah ?? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> thats coooool <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> ..... so you want to sold your LT1 and get LS1 ?? yeah its the best choice <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

So , you get my name but you add "h" <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ..... nice <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

So Abdullah , what color your car has ?? and I see it has a cool time with A4 ..... can you tell me about your modifications ?? or its a secret ?? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Good luck my brother and take care <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

https://www.spoperformanceparts.com/...920&CATID=2916


This is the same block that was used in the LeMans 24 hour endurance racing C5R Corvettes, and is intended for maximum effort competition engines. This block has the same production external dimensions and bosses, but the primary difference between this block and the Gen 3 production blocks is a siamesed water jacket, which allows engine builders to build engines with larger bore sizes. The delivered, post hone, bore size is 4.117", and the maximum finished bore size recommended with this block is 4.160". Cylinder deck height is 9.240". This block uses a dry, pressed-in liner similar to other GM racing aluminum small blocks. Steel billet bearing caps are fitted to the block. This block features wet sump style oiling and is made from high strength A356 aluminum that utilizes a modified T7 heat treat. Production Gen 3 style cylinder heads may be used on this block; however, for maximum performance, P/N 12480005 Gen 3 racing cylinder heads should be used.

 

The best and most accurate information should be obtained from the maker that builds the C5-R engines.

www.katechengines.com

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Will Race 4 Food:
<strong>471 cubic inches.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Now, THAT'S what I'm talking about.

 

Abdulla,

the modifications to my LT1 Z are:
1-3/4" hooker long tubes, race ported LT1 heads with stock valves, 224/236 112lsa extreme cam, borla catback with block off plate, moroso cold air kit, compcams 1.6 roller rockers, reprogrammed PCM, 0.020" overbore, the best time i did was 13.20@115 mph using the G-Tech which is actually more like 13.20@110 mph in a dragstrip i have no traction with traction i can do 12.7@110 mph this with the stock converter if i get 2800-3200 vigilante or yank i should do 12.2@110 mph

i think i will get a Holden Commodore SS and slap that ~450ci C5R block stage 3 ls6 heads and a solid roller cam into it with a good yank converter should do low 10's <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> once i sold the car i will begin doing the progject <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> .

 

6- where can i get it?

I bought the C5R block and C5R heads from: www.katechengines.com

 

I'd like to go ahead and order me a C5R 471 stroker w/ C5R heads and a 300/280 1"/.900" 100 and of course some type of intake that would flow pretty well, but not well enough to where a reverse split cam wouldn't benefit me. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Then, I'd like to go ahead and order a TNT direct port N2O fogger kit (500-shot, of course). Gee, I wonder if the stock clutch would hold like 1300 horses. Or the stock T56 or stock rear? Probably not. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

Salam Abdullah

Yeah , I think I know your car ,I see your car in Bayan ,right ?? guys talk alot about how fast your car is ..... and call you Al - Mulla <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> ....

Abdullah , your project is great , and this Lumina will be a monster I know <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> ....... you can get C5-R heades , I think its better than LS6 heads with this block

Good luck Abdullah

 

Abdulla, that is true i live in Bayan, i think the C5R heads are stage 3 ported LS1 heads so i think stage 3 ported LS6 heads are better.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Abdullah:
<strong>Abdulla, that is true i live in Bayan, i think the C5R heads are stage 3 ported LS1 heads so i think stage 3 ported LS6 heads are better.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOOOL, you kidding right?? C5R heads runs I believe up to $8000 and the flow is just crazy without porting! LS6 is slightly better than the ls1 but nowhere to compare them to the C5R heads!
just my $0.02

 

Has anyone put this block in an F-body yet?

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Abdullah:
<strong>Abdulla, that is true i live in Bayan, i think the C5R heads are stage 3 ported LS1 heads so i think stage 3 ported LS6 heads are better.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not quite:

Gen 3 Racing Cylinder Head w/Additional Chamber Material
Part Number 12480090
These are the same heads that propelled the C5R Corvettes to a LeMans 24 hour win. The are for maximum effort Gen 3 racing engines, which should incorporate the use of a Gen 3 racing block P/N 12480030, also. A special manifold must be fabricated to use this head. The cylinder heads include the following features:
The basic height, width and attachment faces are in stock location to dowel and deck position. All dimensions and fasteners are metric.

The basic valve angle was revised from 15 to 11 degrees to produce a smaller chamber . The valve angle also provides more space for aftermarket shaft mounted rocker arms.

The rocker cover hold down bosses are incorporated into the rocker arm plateau for the 4-bolt center hold down type cover (1999 model year).

The chamber volume for the P/N 12480005 head is 38cc with flat faced valves of. 75mm inlet and 1.5mm exhaust margins.

The P/N 12480090 provides additional material for CNC porting and chamber shaping and starts at a volume of less than 30cc's.

The inlet port roof and floor is raised and the attachment pattern is designed for a Kinsler type fuel injection manifold. Inlet port is 57.15 x 36.58mm / 55.957mm dia. precision finished.

The cylinder head is machined for larger diameter springs (41.5mm or 1.63" dia. machined pocket).

The exhaust flange is identical with the production part.

The exhaust port is stock size.

The head is machined for a 12.712 / 12.688mm dia. valve guide bore.

Rocker cover oil rail seal is a reverse tapered groove for a 3.2mm dia. (.125") free length "O" Ring.

 

[QUOTE]Originally posted by 2000LS1:
[QB]Has anyone put this block in an F-body yet?
_________________________________________________

I was going to have my stroker built using the C5R block but I was told by many the same thing: "It would offer "0" power gains and I would be waisting my cash. So I got an ARE built 436".