switching to roller

[SMOKEDYA]

I'm switching my 74 351w over to roller. I've decided to use OEM FRPP roller lifters.Is it possible to drill the valley of the block without taking it apart?I was thinking of using heavy greese and a shop vac to catch the shavings. Also i dont think you drill clear threw the block to begin with do you? peace















john

 

[liljoe07]

OEM roller 5.0's are drilled all the way through. Not sure about 351's. Engine needs to be out and dis-assembled really. If not, then you run the risk of drilling into the cam bearings. Not to mention the metal shavings you may miss.

If you drill all the way through, measure for bolt length. Too long and you will bind the cam up and wipe out some bearings.

 

[tb9050lx]

the lifter bores on that old 351 are to short for the factory roller lifters , the later blocks have longer lifter bores, to run those lifters in a early block you have to run a reduced base circle camshaft , which will kill performance , you should use the roller lifters with the tie bars !

 

[SMOKEDYA]

I found out talking to summit that comp makes a complete conversion for the 351w. So i'm gonna order it. But first i need to figure out what cam i want with the kit? Anyone wanna take a stab????? peace









john

 

[lancec2c30]

Are you still planning on doing the turbo thing?

 

[SMOKEDYA]

Yes i plan on doing the turbo still,just put on hold for a few more. Either way tho i'm going to go to a roller motor. I talked to the machine shop they said i could drill it myself then get the OEM style lifters and it would be way cheaper instead of the linked ones.peace











john