Another roller cam conversion question...

[JCampbell]

I've got a '90 454 out of a Suburban that I'm going to be swapping into my dually. I think I'm going to go with a roller cam.

Is there any reason I can't just go to the local pick 'n pull and yank all the roller cam stuff off a Vortec block to retrofit into my '90?

Yes, my '90 block has the roller cam girdle bosses cast into the lifter valley.

[INSIDIOUS '86]

You Prob can but I don't think there will be much power gains
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[JCampbell]

Going more for mileage (in a 454, ha!) and longevity. Plus, I don't really want to have to hand-wring over all the zzdp controversy.

[thesickc10]

The vortec blocks have a plate that bolts to the valley to hold the roller lifters in so i dont know if it would work

[JCampbell]

Originally Posted by thesickc10

The vortec blocks have a plate that bolts to the valley to hold the roller lifters in so i dont know if it would work

Originally Posted by JCampbell

Yes, my '90 block has the roller cam girdle bosses cast into the lifter valley.

...

[thesickc10]

Missed that part my bad.

[INSIDIOUS '86]

Originally Posted by JCampbell

Going more for mileage (in a 454, ha!) and longevity. Plus, I don't really want to have to hand-wring over all the zzdp controversy.

Haven't had zinc issues with my flat tappet but I'm running royal purp. But bbc do have a nack for eating cams. If anything I say pull the roller stuff but get an aftermarket cam
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[JCampbell]

Originally Posted by INSIDIOUS '86

If anything I say pull the roller stuff but get an aftermarket cam
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Yeah. That's what I meant. An aftermarket cam. I just wanted all the factory peripherals to cut down on some of the cost.

[INSIDIOUS '86]

Originally Posted by JCampbell

Yeah. That's what I meant. An aftermarket cam. I just wanted all the factory peripherals to cut down on some of the cost.

Yah go ahead get all the stuff the rollers should be good try and find low mile stuff
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[bnoon]

As far as the aftermarket rollers go, the early small block retrofit rollers are EXACTLY the same as the Mark IV big block lifters except for the tie bar lengths. That means the V6 rollers will fit the big block lifter bores and be properly oiled. Now as far as the factory Vortec tie bars and spider are concerned, I have no idea if those are the same to hold those V6 roller lifters in place.

Oh, does your block have the cam thrust retainer bosses to use the (I'm assuming here) stock retainer/etc hold the roller cam in place, or will you be using a retainer button with aftermarket timing cover? I guess this question only makes sense if the big block will need these parts as the small block Chevys do... you know what assuming does. LOL!