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Anonymous
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I am installing a 260 comp cam in my 170 six, does anyone know if I will be ok without milling the head? Please help!!
I think you should be fine. What's the lobe seperation angle and your current compression ratio? Remember when you replace your head gasket that the newer ones are thicker thus reducing your CR. You may want to shave the cylinder head a bit to be on the safe side. The Falcon Performance manual and the stickys at the top of this forum has some good info on chamber size, heads, gaskets, etc.
I just noticed your previous post asking about roller rockers. The rebuilt 200 head will have larger combustion chambers seriously reducing your compression ratio. How much was shaved off the head when it was rebuilt? You can't just throw a bunch of high performance parts on and expect a bad a$$ motor. It's a sum of the entire package. Did you measure your CR before the engine was assembled or is the engine still out of the car?
I think all the 'standard' comp cams are 110*LSA.
Do you already have the cam in hand? If not dont be shocked if whoever you try to order it from says it may be at least 2 weeks. That goes for online/ebay types also. I just went through trying to get one a few weeks ago and found out even though most people show them in their catalogs and on their sites they dont stock them, they get them from comp and the inlines are not a stock item for comp either so it just depends on how many orders they have at the time and if they have the blanks on the shelf. As of a few weeks ago they had several blanks.
Do you already have the cam in hand? If not dont be shocked if whoever you try to order it from says it may be at least 2 weeks. That goes for online/ebay types also. I just went through trying to get one a few weeks ago and found out even though most people show them in their catalogs and on their sites they dont stock them, they get them from comp and the inlines are not a stock item for comp either so it just depends on how many orders they have at the time and if they have the blanks on the shelf. As of a few weeks ago they had several blanks.
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Anonymous
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The engine is out of the car and I do have the cam right now, however it took me some time to get it like you said, so do I need to do something to the head before I install the cam?
Do you know what your compression ratio is going to be? Has someone CC'd your head and measured (and CC'd if needed) your bottom end? If that has not been done you should do it now or have it done so you know what it is (hopefully what you were shooting for) or the thing may not run right or at all. At least if you know you have the compression ratio right you can cross that off the list of possible problems if you have any. If there has been a lot of work done on the block and or head (maybe by past owners also) you will want to check preload on the lifters once you get the head on. Dont forget to install the lifters before the head! Use plenty of the prelube and break in stuff.
This compression calculator on Falcon Performance website is very handy:
http://falconperformance.sundog.net/compcalculator.asp
so is the manual.
http://falconperformance.sundog.net/compcalculator.asp
so is the manual.
8) if you dont want to mill the head, contact www.egge.com and get a steel shim head gasket from them.
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Anonymous
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Thanks for all the help!
