Wb 253 Stroker to 5L

[WBmadman253]

Vn heads will go on if bores are notched for valve clearance but if you're really just trying to get car on the road I'd be doing super cheap tightarse rings & bearing job on 253 slapper BUT also have another one to build on the side over couple of years.


From what I've seen posted on couple of stroker 253 built these days were scat crank,vn rods with chev casties roughly 310 cubes.

One that I do remember was for numbers matching vh sle owner wanted it to still look factory with bit of pep....another was put together by w.a engine builder with vn heads made 350hp plus but was grumpy as expected.

Won't be putting stock or baby cam with 10.1 cr but if put together in low 9's slap stock or baby cam in then.

Roadstar Autoparts sell cheap copy intakes but on my junker 308 chinawinder was bought as 100% knew that would fit under vk commo or torana bonnet.

I have currently got the slapper build in at the moment that im expecting to die at the 5000K mark based on the cam and piston wear, just to get her through rego, but once its sorted and i do a franken-build ill be putting a nice trutrac in the diff, possibly looking at upgrading the axles, but honestly its not going to be a burnout or drag car, i just want to do the odd big pull here and there that has some serious grunt, and take the partner and the dog around for a sunday or weekend drive.
Block is currently at +40, and i have done a dummy fit on another block to check the valves clear deck with std lift cam and they do by a fair margin so im happy.
I already have the crank that i got for next to nothing as it had a flogged key and snout in the front that i repaired (yay for tradeskills), the rods are easy to come by as we have literally close to hundreds at work that people ditch when they go to stroker combos, and the pistons i want to still be close to factory spec and be as light as possible, while still being all holden.
As mentioned i am an engine machinist by trade so I've been doing the math and gathering options and parts for about 2 years now, and its also a heck of a lot cheaper than paying someone else to build it lol

 

[WBmadman253]

can 304 heads go on a 253? I couldnt find 253 head gaskets last time we played 253 put a decent cam in the 253 and be done with it .
It doesnt matter what you do to a wb ute its never going to be fast everything modern will destroy it in a drag race, isn't the stroke the same between 308 and 253?

The heads will fit with a significant overbore or valve reliefs and correct cam, but as im going to +80 its fine.
I have the WB for sentimental reasons, and i'll never get rid of it, but im not wanting to make it a drag car either. Im just looking to make it something people look at and scratch their head when i tell them what has been done to it
253 and 308 factory stroke is the same yes, but youll never buy a stroker combo for a 253 as no-one sells pistons to suit, only for 308/304

 

[vc commodore]

The heads will fit with a significant overbore or valve reliefs and correct cam, but as im going to +80 its fine.
I have the WB for sentimental reasons, and i'll never get rid of it, but im not wanting to make it a drag car either. Im just looking to make it something people look at and scratch their head when i tell them what has been done to it
253 and 308 factory stroke is the same yes, but youll never buy a stroker combo for a 253 as no-one sells pistons to suit, only for 308/304

At an 80thou overbore, I seriously doubt there will be any meat left in the block....

 

[Jeda]

At an 80thou overbore, I seriously doubt there will be any meat left in the block....

At an 80thou overbore, I seriously doubt there will be any meat left in the block....

Wouldn't 80thou over also come very close to the water jackets, making cooling a big issue?

 

[vc commodore]

Wouldn't 80thou over also come very close to the water jackets, making cooling a big issue?

Wouldn't be surprised if it actually goes into the water jackets with that overbore

 

[WBmadman253]

At an 80thou overbore, I seriously doubt there will be any meat left in the block....

sonic tester currently says i have and avg of around 160 at +40, failing that id have to resleeve to go back to std anyway, so might as well go bigger at that point anyways

 

[gtrboyy]

You can put cheapie scat stroker or even come stroker crank in it with vn rods then just find right chev pistons...been done a couple of times except 253 block instead of 308.

Outlaw sell cheap hypereutectic casties

 

[Deuce]

You can put cheapie scat stroker or even come stroker crank in it with vn rods then just find right chev pistons...been done a couple of times except 253 block instead of 308.

Outlaw sell cheap hypereutectic casties

Factory 253 crank has lighter counter weights than 308 stock crank aye?
Therefore a 253 overbored with standard 355 crank will likely have to lose a lot of counterweight mass depending on piston weights.

 

[gtrboyy]

Can knife edge a stroker crank if he feels like doing the hours to make it lighter.

Still have to clearance red,blue & black blocks all the way up to vr so 253 should not be much difference.


If already boring crap out of it needing pistons buying cheap scat stroker will benefit more than it will hurt & dude is machinist so will be something to play with since already trying to cram more compression & boring it out for more capacity so may as well stroke it...hypreutectics said to be light.

Reckon it's either go full cheap route of factory bits or bite the bullet go for good parts & step it up.

Heavy car with small cubes will get old eventually.