1970 Olds W-30 4 speed Holiday Coupe

[Stefano]

Yes, the spoiler was added to original deck lid.

That is Tom Kelly's W-30 Post. Originally Silver (Platinum) but was repainted early in it's life. Now Black with Gold Stripes.

[Stefano]

Most muscle car enthusiasts know that the horsepower
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ratings of the engines were deliberately set lower than what they actually made. Usually for insurance reasons and so the cars could run in a more favorable class in drag races.

Noted auto journalist Roger Huntington wrote an article about what these engines actually put out; here is the list: (All are gross hp & torque figures.)

Engine------------------Advertised----Rated----------True
------------------------HP @ RPM---- Torque@ RPM-- HP @ RPM

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 340-4 bbl---------275@5000----340@3200------320@5600
Mopar 440-Magnum------375@4600----480@3200------410@5400
Mopar 440 Six-Pack------390@4700----490@3200------430@5600
Mopar 426 Street Hemi---425@5000----490@4000------470@6000
Mustang Boss 302--------290@5800----290@4300------310@6200
Ford 351-4 bbl Cleveland--300@5400----380@3400------340@5600
Mustang Boss 351--------330@5400----370@4000------360@6000
Mustang 428 Cobra-Jet---335@5200----440@3400------410@5600
Mustang Boss 429--------375@5200----450@3400------420@5600
Oldsmobile 455 W-30-----370@5300----500@3600------440@5600
Oldsmobile 350 W-31-----325@5400----360@3600------350@5800
Pontiac Ram Air 400------366@5100----445@3600------410@5600

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Notes:
-The most underrated was probably the 428 Cobra Jet engine... its official rating of 335 hp was a joke, especially considering that the 390-4 bbl engine was also rated at 335 hp.

-The second-most underrated was probaby either the Mopar 426-Hemi or the 340-4 bbl. The 340-Six Pack was not listed, but with an advertised hp of 290@5000 rpm and torque of 340@3200 rpm, I would guess about 335 hp @ 6000 rpm.


<span style="color: #000099">The actual power output of that 455 Olds W-30 is very impressive... 440 hp!

</span>

[iluv69s]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Stefano</div><div class="ubbcode-body">Most muscle car enthusiasts know that the horsepower
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ratings of the engines were deliberately set lower than what they actually made. Usually for insurance reasons and so the cars could run in a more favorable class in drag races.

Noted auto journalist Roger Huntington wrote an article about what these engines actually put out; here is the list: (All are gross hp &amp; torque figures.)

Engine------------------Advertised----Rated----------True
------------------------HP @ RPM---- Torque@ RPM-- HP @ RPM

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 340-4 bbl---------275@5000----340@3200------320@5600
Mopar 440-Magnum------375@4600----480@3200------410@5400
Mopar 440 Six-Pack------390@4700----490@3200------430@5600
Mopar 426 Street Hemi---425@5000----490@4000------470@6000
Mustang Boss 302--------290@5800----290@4300------310@6200
Ford 351-4 bbl Cleveland--300@5400----380@3400------340@5600
Mustang Boss 351--------330@5400----370@4000------360@6000
Mustang 428 Cobra-Jet---335@5200----440@3400------410@5600
Mustang Boss 429--------375@5200----450@3400------420@5600
Oldsmobile 455 W-30-----370@5300----500@3600------440@5600
Oldsmobile 350 W-31-----325@5400----360@3600------350@5800
Pontiac Ram Air 400------366@5100----445@3600------410@5600

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Notes:
-The most underrated was probably the 428 Cobra Jet engine... its official rating of 335 hp was a joke, especially considering that the 390-4 bbl engine was also rated at 335 hp.

-The second-most underrated was probaby either the Mopar 426-Hemi or the 340-4 bbl. The 340-Six Pack was not listed, but with an advertised hp of 290@5000 rpm and torque of 340@3200 rpm, I would guess about 335 hp @ 6000 rpm.
<span style="color: #66CCCC">
-The actual power output of that 455 Olds W-30 is very impressive... 440 hp!
____</span>______________
Cadillac '69 Fleetwood Brougham, '76 Cadillac Fleetwood Seventy-Five Limousine, '95 Lincoln Town Car. </div></div>


wonder where the ZL-1 would fit in there compared to the L-88.. no stats on that motor ?