I was at the local performance shop today and they said that my engine is a hydrolic roller engine or something like that. Is it?

 

The 5.0 HO aka L69 isnt a roller motor, but your LO3 is.

 

At least in the firebird, the 395 H.O. (dual cats) motor definitely WAS a hydraulic roller motor. Mine was!

 

Vern, first I think you had a typo and meant "305" and not "395". Second, if it's "dual cats", its the 90-92 TPI engine (LB9) which isn't the H.O. engine (aka L69). Though the 90-92 TPI LB9 was the most potent factory 305...it just isn't referred to as the "H.O."

To the poster, I am NOT certain when the last L69 was produced but the roller block didn't come out until 1987...and there are SOME documented cases of post 1987 SBCs which still are not roller blocks (mostly in trucks).

 

Thanks for the correction, Glenn. Yeah, it should have said "305"....

And as for the H.O. designation, you're probably right there, too. I've seen my old 305 referred to as the 305 HO since it was the "hotter" dual cats version, but they might have been the "unknowing" who did that.

Sorry for the improper info post!

 

No need to apologize Vern. We are all here to learn and share info. What is more important, is that you DID have the most potent 305 car made (before you installed the 383). So there were no lies

PS: How's the 10 bolt and 5-speed holding up to your current torque monster?

 

That last HO (L69) was 1986 IIRC.

 

No problems so far. Of course, I use the clutch for every shift, and try not to abuse it TOO much......

Sometimes you just have to dump the clutch from a few extra RPMs and break both tires loose just to impress and listen to the sound and enjoy the feel ---- even if you are a 52 year old Old Phat Phart!!!!

That Ram Kevlar clutch sure grabs quick and holds on....

Definitely a FUN RIDE, and I'm still not done tuning it yet!

 

Excuse me..pardon me...
Would you happen to know the HP rating of the L03?
............Thanks

 

https://www.thirdgen.org/newdesign/tech/techdb.shtml

(This isn't crankiness, you see. This is simply a fishing lesson...)

 

For the record: Every question posed in this thread could have been answered by looking at the information provided in the one link above.

Again, not crankiness, just fishing lessons...

 

Your query has found 1 match!
Here are your results:


LB9 : ENGINE, GAS, 8 CYL, 5.0L, TPI, HO


um my 305 is an "H.O"

 

\

I know five7kid posted the link, but here you go:

LO3 V8 9.3:1 5.0 (305) 170 HP@4000 RPM 255 TQ@2400 RPM TBI

 

Nope, it is not. The description is wrong. LB9 TPI has never been "H.O." The L69 was the "H.O." engine.

 

This is exactly the kind of thing that causes this misconception (sp?). The only engine you could have that would put HO badges on the car and was really called a 305 HO (or 5.0 HO) was the L69. The TPI was never the HO motor, even if it did have more advertised power than the L69.

 

i was told by the machine shop also that mine was an h.o due to the flat top pistons and higher compression, so tell me what makes an L69 an H.O compared to the LG4?

 

https://www.thirdgen.org/techbb2/sho...hreadid=261488

86Z: Check your VIN. If it's an "H" (very, very likely), that's a lo-po LG4. If "G", a very, very rare '86 L69. You've done enough to yours (except I don't remember seeing exhaust mods) to make yours essentially as good as an L69.

When we say "search", we mean this Board, not the WWW.

 

of course my vin is an H but it's not the LG4 i swapped in a 88 tunedport 305 roller, what i meant is, basically the LG4 and L69 differences aside from the dual snorkel air cleaner and the other little things, was a bigger exhaust, flat top pistons and a higher lift cam, so what determines if a motor is a high output?

 

- Higher compression
- Better exhaust manifolds
- Better exhaust system
- Bigger cam
- More aggressive CC settings
- Better carb calibration
- Dual snorkel air cleaner
- Aluminum intake manifold
- Electric rad fan

 

It's all in the conventions.

"HO", or "high output"? One is a decal, the other a goal.

GM also has crate motors they call "HO", as in 330HO (330 horse 350 with Vortec heads) aka 350HO, 454 HO and 502 HO. They used to have a kit called the "HO 350 Camaro Conversion Kit" that was based on a ZZ4 engine. They also have crate motors called "3.4 HT" and "HT 502" ("high torque") for what that's worth.

"Positrac", "Turbohydro", "Super Power Pack", "HO" - they're all marketing buzzwords that people latch onto as if significant.

But, if you claim your 305 is an "HO", you'd better have a VIN G.

Oh, the stereo in my '82 was called "ERS" for "Extended Range Stereo". None of it is the stock '82 stuff now, but the speakers and amp have better specs than the originals. Is it okay for me to leave the dash badge on there? Maybe I'd better take it off...