Re: [Chrysler300] Actual Horsepower of 300s
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Re: [Chrysler300] Actual Horsepower of 300s



Interesting but we should all be clear about how the horsepower is measured: 
1) gross hp –as was specified back in the day   2) net hp with accessories 
and exhaust system connected which more closely correlates with ratings 
after 1971  or 3) actual hp at the drive wheels as measured on a dyno.

I can only speak for the 300J (and nearly identical ram K except for 6 bolt 
heads) which were arguably the highest hp standard production 300 engines. 
The factory advertised rating was 390 gross hp and 485 ft-lbs. torque.  The 
actual peak net hp rating with full stock exhaust system as measured by 
Chrysler engineers in Aug. 1962 and published in the 1963 Engineering Data 
Book (for internal use only of course) was approx. 310 hp @ 4800 rpm and 
peak net torque was 410 ft-lbs @3500 rpm; stock engine with timing at 15 
degrees BTDC.   As I understand from corresponding with Burt Bouwkamp a few 
years back, the short rams, factory headers and solid lifter heads probably 
added at least 25 hp over the earlier F/G setup.   He said that the short 
rams alone added 15 hp over long rams at 5000 rpm.

Carl Bilter

From: Keith Boonstra kboonstra@xxxxxxxxxxxx [Chrysler300]
Sent: Tuesday, July 12, 2016 2:56 PM
To: Jack Boyle
Cc: Tony Rinaldi ; John Nowosacki ; Ron Waters ; Chrysler 300 Club Int. 
Server
Subject: Re: [Chrysler300] Leno's Garage 300G video




For as underrated as we find the auto companies were announcing the 
horsepower of their cars to be in the muscle car era, they were apparently 
far worse in overrating the horsepower back in the '50s.

There are some online calculators here:

http://www.stealth316.com/2-calc-hp-et-mph.htm

that you can employ to extrapolate the actual horsepower of an engine using 
inputted car weight and 1/4 mile trap speeds. It's no wonder my 300C is a 
boat anchor compared to my '70 4-4-2. The 300C touts an advertised 375 HP, 
but the various "calculators" on this website come up with a true HP for 
this car of only something like 239 to 258. I used the nominal figures of 
4300 lbs. car weight, and 90 MPH trap speed. I couldn't find any more 
accurate numbers to use.

It's amazing to think about the potential that Chrysler left unused in these 
early hemis when they built our 300s. Fortunately that potential did not 
escape the attention of those building the most triumphant dragsters of the 
day.

Keith Boonstra
-

On Tue, Jul 12, 2016 at 12:34 PM, 'Jack Boyle' jackcboyle@xxxxxxxxx 
[Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:
>From MOTOR TREND



Many muscle car fans know that the power rating of many classic muscle car
engines were deliberately underrated. It was usually done for two reasons...
1) to lower insurance costs and 2) so the car could be in a more favorable
class in NHRA drag racing.
Here is a chart from a muscle car magazine from the 1980s. Written by Roger
Huntington, who wrote articles and road tests for many car mags, including
Motor Trend.

Here is the chart from the magazine:

Make/---------------Adv.------           Adv.------      Actual
Engine size---------HP--------           Torque----      HP

Buick 455 Stage 1---360@5000--510@2800--420@5400
Camaro Z-28 302-----290@5800--290@4200--310@6200
Chevelle 396 L-78---375@5600--415@3600--400@5600
Corvette 427 L-88---430@5200--450@4400--480@6400
Mopar 340-----------275@5000--340@3200--320@5600
Mopar 440-4 bbl-----375@4600--480@3200--410@5400
Mopar 440-6 bbl-----390@4700--490@3200--430@5600
Mopar 426-Hemi------425@5000--490@4000--470@6000
Mustang Boss 302----290@5800--290@4300--310@6200
Ford 351 Cleveland--300@5400--380@3400--340@5600
Mustang Boss 351----330@5400--370@4000--360@6000
Mustang 428---------335@5200--440@3400--410@5600
Mustang Boss 429----375@5200--450@3400--420@5600
Olds 455 W-30-------370@5300--500@3600--440@5600
Olds 350 W-31-------325@5400--360@3600--350@5800
Pontiac Ram Air 400-366@5100--445@3600--410@5600





Jack Boyle

(913) 544 4650



Enjoying the same C-300 since 1967

IMG_0623 small







From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Tony Rinaldi awrdoc@xxxxxxxxx [Chrysler300]
Sent: Monday, July 11, 2016 10:14 AM
To: John Nowosacki; Ron Waters
Cc: Chrysler 300 Club Int. Server
Subject: Re: [Chrysler300] Leno's Garage 300G video





It was to keep insurance rates down. Do you really think the 426 HEMI only
had 425/6 HP?



From: Chrysler 300 Club <Chrysler300@xxxxxxxxxxxxxxx> on behalf of "John
Nowosacki jsnowosacki@xxxxxxxxx [Chrysler300]"
<Chrysler300-noreply@xxxxxxxxxxxxxxx>
Reply-To: John Nowosacki <jsnowosacki@xxxxxxxxx>
Date: Mon, Jul 11, 16 at Mon, Jul 11 - 9:12 AM
To: Ron Waters <ronbo97@xxxxxxxxxxx>
Cc: Chrysler 300 Club <Chrysler300@xxxxxxxxxxxxxxx>
Subject: Re: [Chrysler300] Leno's Garage 300G video





maybe it was marketing hype, but I can't help but point out that the 392
Hemi in my 57, the 413 in my 61, and the 440 in my 70 Hurst all carry the
same 375HP rating.  Were they really all the same horsepower, or was mother
Mopar just hung up on that number?



On Mon, Jul 11, 2016 at 8:42 AM, 'Ron Waters' ronbo97@xxxxxxxxxxx
[Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

Â

Nicely done. Great publicity for our club. Maybe post a link on the website
and the club's facebook page ?

Â

A couple of minor factual discrepancies: No hemis in '59...not even in
Imperial. Also, hydramatic, not hydraglide, GM tranny.Â

Â

Just curious, Bob J...how long did it take to shoot that episode and was it
scripted, or were you guys just talking off the top of your heads ?

Â

Ron

Â

Â

Â

Â

----- Original Message -----

From: 'Rich Barber' c300@xxxxxxx [Chrysler300]
<mailto:c300@xxxxxxx+[Chrysler300]>

To: Chrysler 300 Club Int. Server <mailto:chrysler300@xxxxxxxxxxxxxxx>

Sent: Monday, July 11, 2016 1:45 AM

Subject: [Chrysler300] Leno's Garage 300G video



Bob:

Â

The 27 minute, plus clip is â.²upâ.· at:Â
https://www.youtube.com/watch?v=FpC92FMwxz8Â;   All did go well.  You did a
great job of providing history and high points.

Â

Iâ.ÿm sure all members of both clubs will want to view the video and
appreciate your contribution to the spreading of the word and publicizing
the marque.Â

Â

Rich Barber

Brentwood, CA

Home: (925) 513-6583

Â

Â

Â

From: Bob Jasinski [mailto:rpjasin@xxxxxxxxxxx]
Sent: Sunday, July 10, 2016 8:40 PM
To: 'Rich Barber' <c300@xxxxxxx>; 'Don Warnaar' <300country@xxxxxxx>
Subject: Leno's Garage 300G video

Â

Don, Rich,

Â

About a year and a half ago, I got a call from Jay Leno about a couple of
300G coupes he was looking at.  One of the cars was local to him, and he
ended up buying it.  He invited me to see it, so I went down last
December.  While I was there, he mentioned doing a video on the car, and
that he'd be in touch once he did some work on it.  So, last week, out of
the blue, he called me about coming down on Wednesday and doing the video,
so I flew down, went to his garage in Burbank and did the video with him. He
mentioned it would be about 2-3 weeks before it would be on YouTube, but,
this afternoon he called and said it was going up early tomorrow morning.Â
As respective presidents of the two great 300 clubs, and as a proud member
of both, I wanted to share the news with you.  Since I haven't seen the
finished product, I'm a bit nervous about the outcome, but everything seemed
to go well.

Â

300ly,

Â

Bob Jasinski

Â







--

"A government big enough to give you everything you want, is big enough to
take away everything you have." ... Thomas Jefferson

Conservatives believe government action is an obstacle to our freedom.
Leftists believe our freedom is an obstacle to government action.Â





[Non-text portions of this message have been removed]



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Posted by: "Carl" <cbilter@xxxxxxxxx>
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