Thread: cam help

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a few questions for the experts. IM planing on getting a dart big M block. Wich cams fit it mark4-5-6 some places list differnt cams for the differnt gen of blocks Howards lists the cam i want under mark 4 will it fit the dart block or will i have to get a custom grind to those specs made to fit newer block . WHAT is the differnce in them ?
HAS anyone used those isky easy roll solid roller lifters ive herd way to many horror story about roller lifters looseing the pins out of them . HOW do they hold up?

you can put any cam in a big M if you want the mark 6 cam in it .you have to used a step nose cam and mark 6 chain set . if you do not want to use this cam then is a mark 4 and mark 4 timing set . lifter should be taller 300 body lifters if your using a sold roller .if you are going HYD roller your block may come with hold down to use the stock gM lifters. dog bones .Gm hold down /spider. if a big cam i would not use the stock gm lifter. there many that make a long body hyd roller lifter . pins do not just fail off the bat many things play in to how long the pins will last . telling how big of a cam your using will help along with what you going to use the engine for Hippo lifters help

PAT thanks i wasnt shure what the differnce was between them and ill use a markIV cam then as for cam ide never use a hyrd roller cam only a solid roller i didnt look specs up but around 270 int 280ex at.50th it was right around 700 lift it was around 4 to7600 rpm range for use maybe the strip once just to see what itll do if it hooks up but mainly pleasure on the street not a daily driver roll cage no heater back seat is all tubs 488 gear in a nova i dont mind pullen lifters every winter to inspect or replace them i just dont want to worry about them thought maybe those isky ones were the answer

Originally Posted by ratitude

PAT thanks i wasnt shure what the differnce was between them and ill use a markIV cam then as for cam ide never use a hyrd roller cam only a solid roller i didnt look specs up but around 270 int 280ex at.50th it was right around 700 lift it was around 4 to7600 rpm range for use maybe the strip once just to see what itll do if it hooks up but mainly pleasure on the street not a daily driver roll cage no heater back seat is all tubs 488 gear in a nova i dont mind pullen lifters every winter to inspect or replace them i just dont want to worry about them thought maybe those isky ones were the answer

i used many cams this size on the street for 30 years . run good oil like brad pen with zinc use the crower hippo roller lifters can go solid bearing iskys thats a upgrade on a red zone thats a $1200.+ roller if you did not buy the block you could have dart set it up for a bigger lifter use a jesel roller lifters . in the past i just used the crane bulk lifter run them .then pull them before they fail . if you need any thing let me know i have all the parts and heads 335.345 and 355 . and all the parts to build the short block new with a 4.250 or 4.375 crank so 540 to 580