Questions for guys with C5R heads...
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From: Gainesville, GA
Questions for guys with C5R heads... 1. What type of rocker setup is required for these. I am assuming that standard SBC rockers will not work.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
Last edited by LOnSLO; Jan 19, 2004 at 08:54 PM.
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From: H-town
Originally Posted by z28mccrory
Where can you buy a set of C5R Castings...i cant seem to find them anywhere.
Originally Posted by LOnSLO
1. What type of rocker setup is required for these. I am assuming that standard SBC rockers will not work.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
2. The chamber is around 44cc with the GMPP cnc set, fits best on 4.125 bore.
3. I have used them on a 4 inch bore ls block with a 2.125- 1.6 valves.
4. My guess is you could get them to 50cc, but I have never done that.
Kurt
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From: Gainesville, GA
Originally Posted by 427
1. Jesel make's rocker system. Available in multiple ratio and weight.
2. The chamber is around 44cc with the GMPP cnc set, fits best on 4.125 bore.
3. I have used them on a 4 inch bore ls block with a 2.125- 1.6 valves.
4. My guess is you could get them to 50cc, but I have never done that.
Kurt
2. The chamber is around 44cc with the GMPP cnc set, fits best on 4.125 bore.
3. I have used them on a 4 inch bore ls block with a 2.125- 1.6 valves.
4. My guess is you could get them to 50cc, but I have never done that.
Kurt
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Originally Posted by LOnSLO
Thanks for the reply Kurt. I was hoping you would chime in. So the Jesel rockers are the only ones that will fit? That's going to be expensive.
Jesel prices are starting to get better and they have a great track record for durability, this was my main concern. The C5R heads are a great hi-power head but so specialized the cost is high. If you decide to use them you will love the power potential!
Kurt
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From: Gainesville, GA
I am trying to talk myself into using them. However, my custom pistons will no longer work, as they were sized for a 60cc chamber, at 12.25:1 compression. I don't have enough time at this point to make major engine changes. Perhaps on the next motor. Thanks for the feedback.
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From: Texas, it's like your state, but better.
Good info
i wonder how they would do on a 4.060 iron block. like steve mentioned, you can order them through any dealer, but they're gonna be steep. any dealer employee can get them at cost plus ten percent though, so thats a lil closer to the ballpark.
i wonder how they would do on a 4.060 iron block. like steve mentioned, you can order them through any dealer, but they're gonna be steep. any dealer employee can get them at cost plus ten percent though, so thats a lil closer to the ballpark.
Originally Posted by Vents
Good info
i wonder how they would do on a 4.060 iron block. like steve mentioned, you can order them through any dealer, but they're gonna be steep. any dealer employee can get them at cost plus ten percent though, so thats a lil closer to the ballpark.
i wonder how they would do on a 4.060 iron block. like steve mentioned, you can order them through any dealer, but they're gonna be steep. any dealer employee can get them at cost plus ten percent though, so thats a lil closer to the ballpark.
I'm sure the head would be better yet on the 4.060 bore.
You might want to check Scoggins Dickey for price on the CNC set.
Kurt
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From: Melbourne Australia
Originally Posted by LOnSLO
1. What type of rocker setup is required for these. I am assuming that standard SBC rockers will not work.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
2. Are the chambers set up for 4.125" bores? If not, what bore size?
3. Is anyone using them on a regular LS1 block?
4. I believe Ronnie Duke's car is running them. Is there enough material there to open up the chambers to like 50cc?
Thanks in advance for any feedback.
2. Heads are designed for "Large bore"block..
3. With Darton sleeves MID..
4. Have had them CNC'd to 62cc down here in OZ.
Cheers
AL.
