how does one tell a buick v6 stage II block/heads from a standard one?

[Stich496]

see title thanks

[SuperBuickGuy]

Never heard of them before - doesn't mean they don't exist - but I do know who to call - TA performance, or Kenny Duttweiler.

[boxer3main]

compared to the attempt at rally type numbers (stage 2 can be done in the backyard)

the buick stage 2 is something someone else made up. the power is more than quadruple the oem "stages" (I ignore "stages" categories, even driving a subaru)

curiousity had me looking around the net.

here is a buick v6 site I found

You'll have to click to site, I can't put in a quote here.

[realsteelfreak]

As you can see from the link boxer posted, they are very different. That info boxer linked was in a small parts book available from Buick back in the 80's

[Dynoroom]

The simple way to tell from the outside is 6 head bolts/studs & 3 seperate intake ports. The stock engine has a pair of intake ports on one side with a single port off by itself.

[CTX-SLPR]

All Stage II blocks and heads had 6 bolts per cylinder, that's a row of 8 down the middle and then 6 more (3 top, 3 bottom in the middle of the cylinders). All production based blocks 62-07 have 4 per cylinder which is just the row of 8 down the middle. Like Dynoroom pointed out, the ports are evenly spaced vs paired though the Series II/III 3800's switched to the same layout in ~92.

Stage II blocks varied over the years with different main cap configurations, cross bolting, off center like the production up till the Series II/II, on center (rods are centered on the journals) like the 3800's... in fact a lot of the 3800's improvements came out of the Stage II program.

Why do you ask?

[Stich496]

why,, details if I get in my dirty hands

[SpiderGearsMan]

there were busch cars and indy cars ..buddy ingersoll used the indy car stuff , but that was 25 years ago

[Stich496]

think busch

[boxer3main]

All Stage II blocks and heads had 6 bolts per cylinder, that's a row of 8 down the middle and then 6 more (3 top, 3 bottom in the middle of the cylinders). All production based blocks 62-07 have 4 per cylinder which is just the row of 8 down the middle. Like Dynoroom pointed out, the ports are evenly spaced vs paired though the Series II/III 3800's switched to the same layout in ~92.

Stage II blocks varied over the years with different main cap configurations, cross bolting, off center like the production up till the Series II/II, on center (rods are centered on the journals) like the 3800's... in fact a lot of the 3800's improvements came out of the Stage II program.

Why do you ask?

I was just thinking "wow..six bolts per cylinder"

Until remembering the little 1781cc boxer I smack around has 9 for two cylinders..18 in all.
extra head bolts can be more than for claiming big compression, the bolts themselves could be riding a non-simaese bore (like most boxers).Of course this being said, makes the last 20 years of subarus a pansy (they somehow lost a whole lot of bolts in enginerring the EJ).
back to subject...

does the stage 2 have space between bores?