304 lifters

[SlayerSS]

I'm just having my 304 (vt1 roller cam) rebuilt at the moment and decided might as well put a new cam in crow 4903 and springs, is it worth replacing the roller lifters as well? Apparently LS7 lifters will fit? and are a much more reasonable price than anything I can find for the 304, just want to be 100% they will fit.

Cheers

 

[Deuce]

I'm just having my 304 (vt1 roller cam) rebuilt at the moment and decided might as well put a new cam in crow 4903 and springs, is it worth replacing the roller lifters as well? Apparently LS7 lifters will fit? and are a much more reasonable price than anything I can find for the 304, just want to be 100% they will fit.

Cheers

A quick google looks like 4903 is a flat tappet cam for earlier 304's

Yes you could convert a roller to HFT, but probably worth searching out a hydraulic roller.

LS7 is a roller lifters obviously. I am unsure if it works with the stock cradle though.
How much more $$ to upgrade to tie-bar rollers like most do instead?

 

[someguy360]

A quick google looks like 4903 is a flat tappet cam for earlier 304's

Yes you could convert a roller to HFT, but probably worth searching out a hydraulic roller.

LS7 is a roller lifters obviously. I am unsure if it works with the stock cradle though.
How much more $$ to upgrade to tie-bar rollers like most do instead?

4903 is a hyd roller AFAIK.

CROW CAMS CAMSHAFT FITS HOLDEN 304/355 EFI V8 HYDRAULIC ROLLER 2000-65

CC4903 - VT V8 STAGE 3 CAMApplication RPM Range Part No. Adv. Duration .050' DurationValve Lift LSA Lash IntakeLash ExhaustIntake Exhaust IntakeExhaust Intake ExhaustImproved top end powe

outlawspeed.com.au

I'd absolutely go tie bar lifters, without question. Morell seem to be really good for the 304.

 

[shane_3800]

I would use a tie bar lifter as suggested already.
Even if the LS7 lifters have the same flats as the dog bones on the Holden engine, the retainer spider thing can break sometimes, why risk an old shitty retainer spring spider thing.
US engines that use them have new aftermarket ones available, Holden don't.

 

[SlayerSS]

Damn, im sold on the tie bars now. Another $1000 to the bill haha.