are these worth getting and will they fit??

[sebstenator]

HOLDEN V8 253 308 304 5.0L SPEED PRO VALVE SPRINGS - eBay V8, Performance Parts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 22-Jun-08 23:42:00 AEST)

HOLDEN V8 253 308 304 CRANE BOLT ON ADJ ROLLER ROCKERS - eBay V8, Performance Parts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 22-Jun-08 23:08:00 AEST)

HOLDEN V8 253 308 304 5.0L MANLEY HARDENED PUSHRODS - eBay V8, Performance Parts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 22-Jun-08 23:38:00 AEST)

would all this be ok in a standard efi 5L?

 

[Wagon_Wheel]

Yes they will fit.
Are you putting a cam in along with those?
If not, there is absolutely no point.
Wont be a noticeable gain with a cam either...

 

[383 hatch]

As Wagon_Wheel said, all a waste of money on a stock 5 litre....If putting a cam in, then thats a different story!

 

[sebstenator]

what if the engine is old and in need of a refresh? also will be supercharged soon.

 

[Wagon_Wheel]

There is no point doing push rods or valve springs on a stock, non cammed motor, unless they are actually damaged.
They will do nothing performance wise.
Also, roller rockers dont do a great deal with the 5ltrs, like they do on the V6's, because there is only ratio's of 1.6 and 1.65 i think, which is just on stock ratio anyway.
Where as the V6 ones have may different options for different purposes.

If your looking to freshen up your motor, maybe get a VRS set and chuck that in and clean it all up, and maybe take the heads in to get freshened up too

 

[greenfoam]

You might as well get the springs in, if you feel like doing something they aren't much different than the stock springs pressure wise but usually makes them a little crisper up high if the old ones have been around the block a few million times. Forget the rockers tho, waste of time

 

[383 hatch]

Agreed with Greenfoam, if you are rebuilding the engine then by all means wack a new set of valve springs in.....