New stroker crank info.
02-15-2002, 06:35 PM
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New stroker crank info. I got in touch with "C.O.M.E. Racing" . They are developing a stroker kit for the LS1.
I mainly asked about the crank. Here is the info I got.
- 4" Cast crank
- Should be good for 700BHP and 7500rpm.(Great for a nice N/A buildup...IMO)
- Will be made with a FORD 302W rod journal size for extra strength. It will give greater overlap between the rod and main journals for extra strength.
- May be available within the next 2 months.
- They are developing an "I" beam rod to go with it.(Not sure on specs.)
- No price set as of yet.
The guy I talked with seemed confident that this crank will hold up to the above power levels. He said he would recommend a forged crank for big power adder or endurance motors.
What size is the 302W rod journal? He said the rods are narrower and lighter than stock LS1 rods. If the crank uses that journal size what options do we have for rods besides the ones they are making?(5.0 rods <img src="gr_eek2.gif" border="0"> )
I'm gone for the weekend so I want this topic to fill up with replies while I'm gone. <img src="graemlins/gr_judge.gif" border="0" alt="[judgement]" /> <img src="gr_grin.gif" border="0">
Johnnie
[ February 15, 2002: Message edited by: XLR8NSS ]</p>
I mainly asked about the crank. Here is the info I got.
- 4" Cast crank
- Should be good for 700BHP and 7500rpm.(Great for a nice N/A buildup...IMO)
- Will be made with a FORD 302W rod journal size for extra strength. It will give greater overlap between the rod and main journals for extra strength.
- May be available within the next 2 months.
- They are developing an "I" beam rod to go with it.(Not sure on specs.)
- No price set as of yet.
The guy I talked with seemed confident that this crank will hold up to the above power levels. He said he would recommend a forged crank for big power adder or endurance motors.
What size is the 302W rod journal? He said the rods are narrower and lighter than stock LS1 rods. If the crank uses that journal size what options do we have for rods besides the ones they are making?(5.0 rods <img src="gr_eek2.gif" border="0"> )
I'm gone for the weekend so I want this topic to fill up with replies while I'm gone. <img src="graemlins/gr_judge.gif" border="0" alt="[judgement]" /> <img src="gr_grin.gif" border="0">
Johnnie
[ February 15, 2002: Message edited by: XLR8NSS ]</p>
02-15-2002, 07:18 PM
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Re: New stroker crank info. Someone posted this earlier - I am still curious to understand the "cast billet" process their website describes <img src="gr_images/icons/wink.gif" border="0">
Seriously, a cast crank would be great for LS1 buildup's. I probably wouldn't turn one to 7500, but that may be just me.
Chris
Seriously, a cast crank would be great for LS1 buildup's. I probably wouldn't turn one to 7500, but that may be just me.
Chris
02-15-2002, 07:26 PM
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Re: New stroker crank info. [quote]Originally posted by ChrisB:
<strong>Someone posted this earlier - I am still curious to understand the "cast billet" process their website describes <img src="gr_images/icons/wink.gif" border="0">
Chris</strong><hr></blockquote>
Probably just a typo. I'll write the guy back and let him know about it so the LS1 crowd doesn't give him too much grief. <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_grin.gif" border="0">
Any knowledge on the 302W rods?
Johnnie
<strong>Someone posted this earlier - I am still curious to understand the "cast billet" process their website describes <img src="gr_images/icons/wink.gif" border="0">
Chris</strong><hr></blockquote>
Probably just a typo. I'll write the guy back and let him know about it so the LS1 crowd doesn't give him too much grief. <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_grin.gif" border="0">
Any knowledge on the 302W rods?
Johnnie
02-15-2002, 07:55 PM
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Re: New stroker crank info. 302 crank pin is 2.123 with a .912 piston pin.
large journal chevy is 2.1 and small journal chevy(early 327,283) is 2.0 both used .927 pin. A 4 inch cast crank at 7500 would be pushing it but if done properly should be ok. There are new casting techniques that can give cast cranks almost as much strenth as forged ones. Cast cranks will also bend before they break which can sometimes be beneficial. I've never cared for I-beam rods. Sure they are cheaper but not near as strong as H-beam. I dont like it when the rods are the weak link in the rotating assembly.
large journal chevy is 2.1 and small journal chevy(early 327,283) is 2.0 both used .927 pin. A 4 inch cast crank at 7500 would be pushing it but if done properly should be ok. There are new casting techniques that can give cast cranks almost as much strenth as forged ones. Cast cranks will also bend before they break which can sometimes be beneficial. I've never cared for I-beam rods. Sure they are cheaper but not near as strong as H-beam. I dont like it when the rods are the weak link in the rotating assembly.
02-16-2002, 03:04 AM
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Re: New stroker crank info. www.comeracing.com
they have seem to have a good rep on the holden stuff a little competition is always good be interesting to see what they come up with.
High quaility low volume manufacturing is what Australia is good for, specially with the price of our faulty kanga dollar (it hasnt bounced back).
Ive spent my money already though
they have seem to have a good rep on the holden stuff a little competition is always good be interesting to see what they come up with.
High quaility low volume manufacturing is what Australia is good for, specially with the price of our faulty kanga dollar (it hasnt bounced back).
Ive spent my money already though
02-16-2002, 10:56 AM
#6
FormerVendor
Re: New stroker crank info. That would be dumb as the 2.123 ford rods are VERY limited and only a tiny bit larger that the 2.100 SBC! All the ford stuff uses the standard aftermarket SBC size of 2.100 usually!
