327 300 1965 stocker
 

Anyone want venture a guess on how much HP it will make. ?

Re: 327 300 1965 stocker
 

Needs 425 to 450 HP to be competitive.

Re: 327 300 1965 stocker
 

I would guess around 440 STP, but how it carries HP past peak would be very important to me.

Re: 327 300 1965 stocker
 

Needs about 410 to run a second under in I/SA.

Re: 327 300 1965 stocker
 

Jim get a hold of Tony Hernandez tony 5022 . Tony raced his corvette @ 250, 300, 365 hp. Jim Lewis would know hp.

Re: 327 300 1965 stocker
 

Ok

So we know a 294 CUIN 283 4 jet can make 373 STP HP. 1.27 HP per inch.

Now looking at the 300 HP 327 combination @ 340 CUIN. Bigger bore, more compression, 1.940 intake valve, more cross section in the intake port.
It makes sense to me this engine should be able to make 1.27 HP per inch if not more. 1.27 X 340 = 432 HP. NHRA 365 HP 327 makes 470 HP.

Re: 327 300 1965 stocker
 

Sounds good..if you compare it to the best 283 that ever was.
327 /365 has too much difference to base a comparison off of .
http://www.classracerinfo.com/Engine...MAKE=Chevrolet

I don't know how far under you want to go , Jim, but I'm standing by my observation, using my formula that has been pretty accurate over the years.

Re: 327 300 1965 stocker
 

Mark,
Please speak more about your formula.

Re: 327 300 1965 stocker
 

Mark we would like too run .050 under in race mode . 6/7 under in go faster.the 327 275 i worker on struggled to make 400. this was with old school, but have not ran a AFB carb. so not sure .

Re: 327 300 1965 stocker
 

Jim, the trick is getting a cam into those things and max compression. My one and only attempt didn't do so well.
Anyway , the AFB deal should fall between the 4 GC and the Q-jet. We know that much .
Other than that, I'd have to look at one closely, with the newer rules, and I just haven't.
As mentioned , Jim Lewis would know the deal on them. I don't bother people at work, that do this stuff for a living, though. I haven't seen the ol' boy at the races in a while.

Re: 327 300 1965 stocker
 

Jim, we know what good 327-275's make so what we're looking at is....

-the difference between a good AFB and a good QJet
-what (if any) difference there is in the cam (.399/.399 on the 300 & .390/.410 on the 275)
-what (if any) difference there is in a good AFB intake compared to a good Qjet intake

The 327/300 @ 265 isn't horrible. But the 327/250 is the same engine (except for the 4G) and intake and it's @ 245. I don't see the AFB covering the 20 hp difference, even with the intake being a bit better on the AFB.....given the current state of Stocker intake technology.

But .60-.70 under should be no problem for a decent 327/300, though. -Al

Re: 327 300 1965 stocker
 

Al, it's 260 in a Chevelle with iron heads ..That's 60 pounds lighter in !/SA..Something anyway.

Re: 327 300 1965 stocker
 

Wow ! Wonder how much the 283 would make with the correct intake manifold and not the BOGUS one ?? I need one of these FRIENDLY Dynos so I can feel better about my lil 305..... CHEERS. .....!!!!!!

Re: 327 300 1965 stocker
 

10 - 15 years ago = 1.5 x factored HP in Stock
AND.....................= 2.0 x factored HP in SS

NOW DAYS: Better figure at least 10 or 15 % Higher.
To be competitive is getting tougher AND more expensive
every darn year!

If all you want is 6 or 7 under in full race mode = 375 would probably do it with that combo

If the two fast I/SA last week at Winters had meet in later rounds = It would have
taken at the very least 1.15 to 1.20 to be even be competitive. (I know the cars and
my boy owns one of them)

Re: 327 300 1965 stocker
 

Yes...not sure what body style Jim is referencing, though. The valve notches are the struggle, for sure. :) -Al

Re: 327 300 1965 stocker
 

You know nothing about dyno's. Stick to what you know.....sewing.

Re: 327 300 1965 stocker
 

I have had a rough day, but seeing this post just made me feel all warm and fuzzy inside.......Let’s just say I know as much about Dynos as you know about LEGAL Buick Stocker oil pans...RING A BELL ?????.......For those in the dark, HP HUNTER is the genius that attempted to fix his Stocker oiling issues with a customized ,floor extended oil pan.. Better stick with what you know........bull****ting racers that don’t know any better with all your flow figures and assorted calculations......YOUR MOVE BUD........

Re: 327 300 1965 stocker
 

Just curious...
How do Aluminum and Iron Headed Lt-1 Engines fare in Stock?
What power levels are they getting out of them?

D

Re: 327 300 1965 stocker
 

The Stock world champion’s car is an LT-1 powered ‘98 Firebird.

She can drive and the car is fast but the LT-1’s have been hit many times with HP putting them at a disadvantage to some other traditional older cars and some new combos.

The LT-1 benefitted from a low HP factor for years and could dominate classes. There not slow by any means but the HP factor today makes it tough.

That’s for aluminum headed combos. I know nothing about the iron headed versions.
I raced one for a couple seasons.

Re: 327 300 1965 stocker
 

I see your not comfortable with the math associated with engine design and racing. Like I said stick to what you know.

Re: 327 300 1965 stocker
 

Oh, boy...MJ vs. MJ


https://i.postimg.cc/T3NS8zcB/777615...ted-agains.jpg

Re: 327 300 1965 stocker
 

Hey MATH genius, how bout we REVISIT that trick oil pan of yours. It’s a darn shame you deleted the pic...

Re: 327 300 1965 stocker
 

Sure. I never deleted any pictures, but lets revisit the oil pan that isn't even used. But back to my comment: "You no nothing about dyno's" after you made negative comments about simple formulas that can supply useful information, I wonder how much of the information a dyno can spit out you actually understand? Maybe you do.....Maybe you don't.

Re: 327 300 1965 stocker
 

Al its going to be Chuck Koppien old 1965 chevelle wagon.

Re: 327 300 1965 stocker
 

I was hoping so! That car has so much race heritage and many, many wins...it will be great to have back in action in our area. :) -Al

Re: 327 300 1965 stocker
 

Jim,was Chuck's car run in stock in the 90's?,the name Lear rings a bell...gsa612

Re: 327 300 1965 stocker
 

Hmmm, doesn't seem to be much different that the race hemi pan that got approved for garden variety 383 station wagons. ;-)

Re: 327 300 1965 stocker
 

I am going to say something nice about you.....you get an A in persistence....Regards....

Re: 327 300 1965 stocker
 

Yes, Chuck's wagon returned as a Stocker. Daryl Lier from Sioux Falls bought the car from Chuck and continued to run it as a Stocker. Daryl traveled with and helped Chuck a lot. Recently, he's been helping me out at the races. :) -Al

Re: 327 300 1965 stocker
 

About 3 years ago, I was racing in a Stock/Super Stock race in Hagerstown, MD. After I was done for the day (lost), I took off the 4GC on my 65 Malibu J/S 327/250 and put on the 3721 AFB. It sounded good and was real responsive. After the run I was disappointed
to see that it ran just about what the 4GC did. The 4GC was one that I did myself and the AFB was done by a known Stock racer. Since then I have not tried it again and built a
327/350 and am VERY satisfied with the way it has run.

Jim Henderson
E/S 1029

Re: 327 300 1965 stocker
 

That was the 327/350 which used the Hotcam of its day !!
Something like .499 lift in/ex.
Remember it being a nice street cam.

Re: 327 300 1965 stocker
 

327/350 hydraulic cam .447-.447 lift

A Very popular street performance cam.

Re: 327 300 1965 stocker
 

Cool to have Chuck's wagon set to run again! I have an attachment to it as Herman Korf and I built that car in my garage and his. It was built to match my SStock Chevelle wagon at the time, but Herman ran it as a Stocker. Herman than traded his wagon for Chuck's '65 Chevelle 4-dr sedan SStocker, but then ran the 4-dr as a Stocker. The trade must have taken place around 1980.

Does the car still have the silver/blue 40 year old paint job? Lotta wins in that car. Chuck was a (good a**hole - ask Don Prudomme) and a great driver.

Jerry

Re: 327 300 1965 stocker
 

The Don Prudomme incident is a classic! :) -Al

Re: 327 300 1965 stocker
 

No Jerry its been repainted once or twice, Its not mine Rick Roth owns it. I am just trying to help him ?