Thread: cam vs cam

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to make a short story shortter.....found a cheap cam in the summit book(summit brand) has same lft and duration @ .050 as the edelbrock rpm (lift 488/510 duration 234/244) but every thing else is different.


Do u guys think it would wor the same?or close to?


summit edelbrock
adv int dur.292 308
exh 302 318

lobe sep 114 deg 112


is that to much of a dif

who nows i say go with which ever is cheeper.

Have a read on some replys I made on 350 chev 4 bolt buildup inthe chevy small block section of the forums and see how diferent grinds affect your dynamic compression ratio.

i know about how you have to match a cam to many things like compresion ratio but what i was asking is whether or not thats i big enough difference to spend 100 extra dollars....

i dont make the cams i dont degree them so i dont care what the specs are if it goes fast

that didnt answer my question

Originally posted by DennyW
i dont make the cams i dont degree them so i dont care what the specs are if it goes fast

Yes it did Top end cam.

i knew that (not funny) i asked if theres much of a difference between the edelbrok rpm so nope didnt answer it sorry next person

I think what Denny is telling you is based on lobe seperation and cam timing that the Summit Cam will make more power at the top end and the Edelbrock will make more low end and mid range.

Pat

Well your not posting enough info to full compare the too....

First of all let address the LSA which you have pointed out are 114 and 112....

The 114 has a wider Lobe Seperation Angle which means it has less overlap...

where as the 112 has a tighter angle with more overlap...

What does that mean to you....The wider the LSA the better the idle quality..meaning smoother idle and a higher vacuum to operate things...

A narower angle will give you more midrange power but with lower idle quality and less vacuum....

What you are missing is the installed angle to know whether the cam has a "ground-in" advance and all the opening and closing points....

Also the 114 cam will be more apt to ping...gonna have to use better gas.... Me I'd run that one and set it where I like...but you may be better off with the 112....

Or as everyone else said...buy whats cheaper....Unless your a dyno number chaser you won't notice much difference other than the way it idles....2~ worth

Edit: I also want you to know that if you buy an Edelbrock cam you MUST use there timing chain and gears (unless you degree the cam) or it will not be where it supose to ...It will be anywhere from 4-8 degrees retarded.....

thanks bowtie that answered my cuzins question

thanks bowtie..........


thats what i was asking denny sorry if i threw you off with the "i dont care what the specs are if it goes fast"

rob i think we would be better off to go with the summit cam. it might not be the top of the line cam but in the long run we wont have to get the timing chain and gears unless we degree the cam and it seems like to much to do. you can almost get two summit cams for the price of one edelbrock. (so theres a back-up just in case) but what do you think?

probably summit even tho were still goin to degree it....them weight jaccks are giving me hell

well i got another question about the summit vs edelbrok rpm....will the edelbrok valve springs work the same on the summit?