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i measured the lift on my 8cm cam for my flatty the other day after figuring out via a tech article , and oh boy ! it is a regrind featuring a massive 364 degrees of lift on it both intake and exhaust . most likely would have bent all my purty new stainless valves , or if i got lucky and they actually cleared my milled eab heads it would have been a little too radical for street use ( it appears from some quicky measurements that the duration was increased also ) and would not have idled worth a poop . yes i have another one tucked away that is 'sposed to be a cherry one , but have decided not to use it and buy an aftermarket cam that is close to what i need . long story short i have decided on the cam craft cams 8ba-1919 , but i am in need of a complete timing card to make my final evaluation / decision . i had this info and many others from the manufacturers , but the last time the 'putor caught a cold i lost it all ! i have tried to contact them again , but too no avail so far . do any 0f ya's have access to where i can find a timing card on it ( and yes i tried the online site / catalog ) or have the info ? i have everything but the intake opening and closing at btdc / abdc , and exhaust at bbdc and atdc so i can determine the overlap etc... i hope you can help a fellow idgit out !!!!!!!!!!!!!! oh and obviously i have begun to tinker with the 53 again eh . even got a fella coming over tommorrow to look at the required body repair needed and modifications i want and give me an estimate . maybe i'll get somewhere yet .......
It's certainly your choice, but I never heard of "Cam Craft". Do you have a link? With all the proven, well-developed flathead cams, why not go with something documented by hundreds of users?
Is your block ported? If not, a big cam isn't going to do much except kill the bottom end and compression. Most folks recommend a really mild cam for anything but circle-track or drag racing.
ross just look up camcraft cams , and i found them through egge who sells both the grinds they have for the 8ba , and they do custom grinds . i have been once again reading tilden technologies site ( larry young i think is his name and he's on the other flatty site we are on as the camman i think ) and harvey cranes writings on camshafts . they both suggest a cam for the street should have a minor intensity of a certain value , as well as many other things ( the 8cm has an mi of 32 the camcraft an 26 mi ) and have been using many of the things they have in their sites / articles to go buy and they as well as others have recomended the 8cm as the best street cam for a flatty . many of the cams the aftermarket well most of them , have really high mi numbers and are what they refer to as lazy in the opening and closing rates and some other areas . not too mention the camcraft and howards cams are the only ones i can say for sure grind the cams with the valve lash figured in so if they say it has x amount of lift at the valve it does , where as many others including the ford cams as far as i can figure out from my research you have to subtract the lash from the lift numbers . am i boring you yet , or amybe confusing you ???????? it's just me ross i get deep into studying things when i decide to do it , and things usually work out better when i use common sense , research , and my mind , than when i use my heart . yeah i'd like a nasty sounding hotrod cam but c'mon she's a 3600 pound beast with a 3.08 geared diff , and it see's only street and highway use when i drive her so .............. now i gotta go away to my grand daughters play at theatre in the park in new salem so i'll come back later and meander some more and korn-fuze you some more ....p.s. crane seems to have a lot too do with them too as he mentions them in his writings and seems to have something to do with some of the designs ........
How much are the heads milled? Usually milling stock heads for increased compression is not advised. Do you plan on "claying" the valves to check clearance?
Looks like a decent outfit, but like I said, I've never heard of anyone using them in a flatty. Doesn't mean they aren't good, and lots of people just buy whatever Speedway is selling.
For sure you want to clay your heads as Tinman says! Are you using Johnsons?
the heads were milled .010 not to bump the compression so much , but to clean 'em up . yep i intend to clay the valves with a gasket in place to be dain sure , but the cam i want to run has only got .325 lift which according to the math / in theory , should have ample clearance even with milled heads . if i remember right i think untouched heads can handle .350 lift . i am running composite head gaskets from best i got from egge and i think they were .052 thick ?? yeah ross i can't recall for sure why aftermarket lifters have to be run with aftermarket cams , but i am gonna buy a set of hollow adjustable's from reds . as for speedway , i buy plenty from them but even the vaunted isky cams come up as being lazy according to what i have read , and make power in an unsuitable range for my purposes ( off idle to maybe 4500 rpm at the most ) . lopey idle sounds good , but if i gotta burn up the clutch by slipping it to get moving well ...... i don't quite follow the crowds anyway so if they buy part a i'm prolly gonna look for a part b that's american made and of just as good quality and offers me the same or what i want just too be different or difficult whatever the case may be at that time ... i abused my brain and used my fingers and toes , and figured if i can remember as i can't find my notes , that my final c.r. was gonna be either 7.04:1 or 7.08:1 not unreasonable to my mind .
now do anybodieez have any ideas of what i was wanting ???? not that i don't like an intelligent conversation and listening to all of you with prior knowledge and your idea's so bring 'em on !! you might point out something i'm not thinking of or making a mistake on so .......................
your way over my head..I tend to go with a RV grind .. torque over horsepower..so far I always have been happy with comp-cams and crane products..but then I have only done 4 motors in over 20 years ..not a lot of experiance really ..but you guy's keep talking ..I'm learning things to check ..thank's ..
ken that's what i'm doing , going with low and midrange performance over big power numbers in the stratosphere . take a look at tilden's site and read cranes meanderings , and you can learn a lot , as well as stuff i've read on lunati , comp's , and isky's site . the merc cam's i have , one which is the regrind , the other i'm not gonna touch now , are what a lot of peeps have said to be a great cam . the specs are on tildens site along with many others . just being thorough about it though as it's beggining to get into some dollars to put this old girl back together , so we only want to do it once eh ..............
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