Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

304 Benefits of VS Stroker cleared block

SLE-883

Member
Joined
Jun 29, 2009
Messages
171
Reaction score
18
Points
18
Location
Sydney
Members Ride
1981 VH Commodore SL/E
I have an SLE 253 and am going to throw in a VS 304 engine with VN T700 box.

I know this is nothing new and people will say go LS but that's not what I'm after.
The SLE is a one owner original 98000kms car and I intend on keeping it look as original as possible (Apart from the original Simmons FR19s)

The 253 will be removed and put on display and the VS block will be converted to carby with VN heads and painted GMH blue with standard GMH air cleaner etc.

Now, I'm hoping to achieve 400hp at the fly and although it's achievable with a standard 304 wanted to know what the benefit of a stroker cleared block is, if any?

Even if I'm building a 304 engine wouldn't the block still need to be prepared? For a little more money would I be able to use the block for a 355 kit?

Thanks for your help.
 

EYY

Well-Known Member
Joined
Mar 6, 2011
Messages
5,090
Reaction score
1,164
Points
113
Location
Vic
Members Ride
VS Statesman
Only benefit is the stroker clearance for the 3.48" crank with stock rods. Just means you won't need to grind anything away for clearance. Earlier blocks are fine too - just more clearancing required. Even with a stroker clearanced block, when running aftermarket rods you'll often need to clearance anyway.
 

gtrboyy

Well-Known Member
Joined
Jan 25, 2006
Messages
1,834
Reaction score
571
Points
113
Members Ride
vt ss & lc gtr
Benefit is they're more common & better chance finding one that still has it's original bore size...stroker clearance just saves you money on grinding time so if takes awhile to get the right block it's worth the wait.

Pick stroker crank that allows you use vn/s rods with suitable pistions or if plan on going further I beams not overkill H beams which most dont need anyway.

You'll get 400hp with 5 litres just that stroker will do it easier with better street manners...taller gears etc

Can still go efi with those new holley sniper/terminator kits & keep carby look.
 

shane_3800

Active Member
Joined
Aug 13, 2011
Messages
769
Reaction score
140
Points
43
Age
31
Location
places
Members Ride
vr commo
Benefit is they're more common & better chance finding one that still has it's original bore size...stroker clearance just saves you money on grinding time so if takes awhile to get the right block it's worth the wait.

Pick stroker crank that allows you use vn/s rods with suitable pistions or if plan on going further I beams not overkill H beams which most dont need anyway.

You'll get 400hp with 5 litres just that stroker will do it easier with better street manners...taller gears etc

Can still go efi with those new holley sniper/terminator kits & keep carby look.
Carby sounds better yes they're.more painful but a street demon is pretty good and has electronic choke.
Carby's need to see a vaccume signal to operate well when you add a big cam with lots of overlap the reversion stuffs up the vac signal in the intake causing them to run the way they do. EFI being superior in every other way is boring imo.
 

gtrboyy

Well-Known Member
Joined
Jan 25, 2006
Messages
1,834
Reaction score
571
Points
113
Members Ride
vt ss & lc gtr
He won't be building no bushpig stroker...had that convo with him a few years ago lol

More like a reliable cruiser that goes & sounds decent
 

SLE-883

Member
Joined
Jun 29, 2009
Messages
171
Reaction score
18
Points
18
Location
Sydney
Members Ride
1981 VH Commodore SL/E
The VS block is being picked up this weekend. It's unopened and has original bore.


gtrboyy, you still have your VH?
 

gtrboyy

Well-Known Member
Joined
Jan 25, 2006
Messages
1,834
Reaction score
571
Points
113
Members Ride
vt ss & lc gtr
Yeah mate still got it & plan to have it back on road again next year with more mods & hidden wiring etc...just got to finish off that rough as guts vp ute first.

Had it driving again not long after you saw it...was pretty crazy to cruise in then rear main leak got worse.Pulled it apart then ended up back at old job(shiftwork)

Hit me up for info if you need it also got lot of parts to offload cheap I don't need like vs v8 powersteer & air con set ups...might have old parts off vh to offload.
 

Sandman

Challenge Accepted
Joined
Apr 8, 2013
Messages
1,245
Reaction score
305
Points
83
Age
25
Location
Melbourne
Members Ride
HQ VC VZ
I have revolving door of various 304 parts too. I'm in Melbourne but happy to ship to you if there's anything you need. Cheers.
 

SLE-883

Member
Joined
Jun 29, 2009
Messages
171
Reaction score
18
Points
18
Location
Sydney
Members Ride
1981 VH Commodore SL/E
Cheers guys.

Engine is home.

20 mins after I unloaded the engine and placed it on the ground my 2 year old dropped a washer into the engine where the distributor goes!



With my last build (VH with 304 EFI conversion) I kept the original VH K Frame. From it was a tight fit with the EFI gear and Castle Main headers.
This time around I'm using Pacemaker PH5700 headers. I was going to use the original K frame again. Anyone recommend not doing this and going a VN K frame?

On my parts list
Engine rebuild kit
Cam
Intake manifold to suit EFI heads (I'm looking at the Edelbrock RPM Air-Gap)
650cfm carby

Possibly a VN K-Frame and VN power steering rack and pump
 

Attachments

SLE-883

Member
Joined
Jun 29, 2009
Messages
171
Reaction score
18
Points
18
Location
Sydney
Members Ride
1981 VH Commodore SL/E
Cheers guys.

Engine is home.

20 mins after I unloaded the engine and placed it on the ground my 2 year old dropped a washer into the engine where the distributor goes!



With my last build (VH with 304 EFI conversion) I kept the original VH K Frame. From it was a tight fit with the EFI gear and Castle Main headers.
This time around I'm using Pacemaker PH5700 headers. I was going to use the original K frame again. Anyone recommend not doing this and going a VN K frame?

On my parts list
Engine rebuild kit
Cam
Intake manifold to suit EFI heads (I'm looking at the Edelbrock RPM Air-Gap)
650cfm carby

Possibly a VN K-Frame and VN power steering rack and pump

The car has a 3.9 LSD rear end.

I'm looking at a Transmission rebuild too with Corvette servos and stage 2 shift kit along with a 3-3500rpm stall converter, depending in the cam.
 

immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
15,195
Reaction score
3,270
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX s2 Calais S/C
Ohh gosh that engine bay brings back memories :oops:

...and the joys of children :)
 

gtrboyy

Well-Known Member
Joined
Jan 25, 2006
Messages
1,834
Reaction score
571
Points
113
Members Ride
vt ss & lc gtr
Mine has early k frame...changed it to manual rack as 1 3/4 pipes were hitting bulky part of steering rack when nailed throttle...barely 10mm with engine not running.

100% ceramic coat pipes + titanium wrap...also drill out the bung for o2 sensor to make tuning easier.

Mine was so close to passenger side floorpan the heat coming through floor & especially underneath car was a major pet peeve.

So yeah vl-vn k frame for sure if want powersteering....lots of little differences with ancillaries from early girls to efi cars like using vn rack with vh p/steer pump etc the lines supposedly different thread & I think alternator touches or too close to front exhaust port.


If go other way use efi gear vn-s has alternotor on other side so some trimming of battery tray required if keep battery in bay.

Few other little things caught me out when I did silver vk...think they hit tunnel near driver's footrest & crossmember for trans I used sucked.
 
Top