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Are pushrod engines being manufactured anymore ? #4591576
12/01/17 11:23 PM
12/01/17 11:23 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
I mean for cars and light trucks obviously. Can you buy a new car or pickup with an OHV pushrod engine today, or are they all going to be OHC with variable valve timing ?

Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591579
12/01/17 11:25 PM
12/01/17 11:25 PM
Joined: Oct 2012
Posts: 2,320
Northern Ontario, Canada
Danno Online content
Danno  Online Content
Joined: Oct 2012
Posts: 2,320
Northern Ontario, Canada
The Chev V8s found in Corvette, pickups Camaro are all pudhrod design.


2016 Sorento SX V6 AWD
2015 KIA RIO SX
2010 Mazda 3 2.0L
2009 Venza V6 AWD
2013 Sonata 2.4L RIP in write-off crash
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591582
12/01/17 11:27 PM
12/01/17 11:27 PM
Joined: Sep 2010
Posts: 7,485
Texas & Global
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,485
Texas & Global
GM & Mopar V8s? ... continue to make serious power >>> lower CG in Racing applications


2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
2014 Fusion Hybrid Titanium
2013 Cruze LTZ - RS Turbo
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591589
12/01/17 11:43 PM
12/01/17 11:43 PM
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
mechjames Offline
mechjames  Offline
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
Chevy/GM V8's, Mopar V8's are all cam in block pushrod design.
Only Ford went overhead cam and didn't look back.


86 Mustang 5.0L 170km - Amsoil XL 5w30 / Baldwin B2-HPG
14 Ram 1500 5.7 - Amsoil XL 5w20 / Baldwin B7443
98 Jeep ZJ 5.9 - Amsoil OE 10w30 / Baldwin B34
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591591
12/01/17 11:44 PM
12/01/17 11:44 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
Chevy pushrod V8's make a lot of power in less space than many other engine configurations.

Check out the LT5 if you looking for some serious power.

Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591606
12/02/17 12:26 AM
12/02/17 12:26 AM
Joined: Aug 2006
Posts: 9,883
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,883
Central Washington
Yes, Hemi and LS engines continue to be made in that configuration. Cam configuration really matters little. They are both pushing on valves in the head, just a different way of getting there. The valve and head configuration matters WAY more.
The advantage of OHC probably only comes in at ridiculously high RPM where the more direct action of the cam allows for lighter valvetrain and thus lighter valve springs. If you spin a OHV really high the inertia of the lifter, pushrod, rocker arm means you have to run really heavy valve springs to shove it all back. But Im sure this only really is an issue at 8, 9 grand.
Otherwise, the OHC has twice, four times the bearing surfaces to oil and create friction, and big long chains or belts.
I wish Ford had stayed with OHV. As mentioned OHV is way more compact. My 4.6L OHC is as tall and wide as a old 460 (7.5L) big block, its only shorter in length. Its ridiculous!


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Are pushrod engines being manufactured anymore ? [Re: mechjames] #4591607
12/02/17 12:28 AM
12/02/17 12:28 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: mechjames
Chevy/GM V8's, Mopar V8's are all cam in block pushrod design.
Only Ford went overhead cam and didn't look back.


So is GM making their cylinder deactivation engines while still using a pushrod design ?
So if I got rid of the cylinder deactivation, I'd have a regular pushrod engine ?

Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591611
12/02/17 12:51 AM
12/02/17 12:51 AM
Joined: Nov 2008
Posts: 9,279
Phoenix
dishdude Offline
dishdude  Offline
Joined: Nov 2008
Posts: 9,279
Phoenix
.

Last edited by dishdude; 12/02/17 12:53 AM.

2018 Challenger SRT 392 PUP 0w-40 Wix 57899XP
2018 GTI
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591623
12/02/17 01:36 AM
12/02/17 01:36 AM
Joined: Aug 2006
Posts: 9,883
Central Washington
Colt45ws Offline
Colt45ws  Offline
Joined: Aug 2006
Posts: 9,883
Central Washington
Originally Posted By: Merkava_4
Originally Posted By: mechjames
Chevy/GM V8's, Mopar V8's are all cam in block pushrod design.
Only Ford went overhead cam and didn't look back.


So is GM making their cylinder deactivation engines while still using a pushrod design ?
So if I got rid of the cylinder deactivation, I'd have a regular pushrod engine ?

Yes. And there are a lot of people doing it (removing the cyl deactivation). I forgot what all parts get changed but its supposed to help the oil burning issue big time.


-Colton
2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
Down for engine swap
2003 Ford Crown Vic PI 75k
Castrol EDGE HM 5W30, Fram XG2
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591652
12/02/17 03:51 AM
12/02/17 03:51 AM
Joined: Feb 2013
Posts: 3,340
Central Virginia
Silverado12 Offline
Silverado12  Offline
Joined: Feb 2013
Posts: 3,340
Central Virginia
The GM 4.8 engine never had DOD but I don't think they make that engine anymore. The 5.7 Hemi in my Dodge doesn't have it either. The cars w/automatic trans have it, though.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591680
12/02/17 05:56 AM
12/02/17 05:56 AM
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
Panzerman Offline
Panzerman  Offline
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
The 5.7 has deactivation as well as the 6.4 Hemi in Automatics only. As a matter of fact if you buy a standard with either engine you get hit with a Gas Guzzler tax.
6.4 Hemi we got gets 24-25 mpg on the highway. Pretty impressive. Also shoots down the whole 5w20 oil required since it runs on 0w40.



2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack
Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591689
12/02/17 06:09 AM
12/02/17 06:09 AM
Joined: Jun 2009
Posts: 430
New England
555 Offline
555  Offline
Joined: Jun 2009
Posts: 430
New England
Depends on how many valves you want per cylinder too.


84 XJ6 M1
92 Mustang 5.0 Redline
99 Tahoe 2 door Castrol Edge
99 MX5 Miata Anniversary Edition M1
04 Subaru STi Motul
Re: Are pushrod engines being manufactured anymore ? [Re: 555] #4591702
12/02/17 06:30 AM
12/02/17 06:30 AM
Joined: Aug 2010
Posts: 5,937
Champlain/Hudson Valley
Kira Offline
Kira  Offline
Joined: Aug 2010
Posts: 5,937
Champlain/Hudson Valley
What does DOD mean? (3 posts above)

Re: Are pushrod engines being manufactured anymore ? [Re: Merkava_4] #4591710
12/02/17 06:41 AM
12/02/17 06:41 AM
Joined: Jan 2011
Posts: 3,252
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 3,252
PV Az
DOD = displacement on demand. GM's early acronym, now called Active Fuel Management (AFM).

What are you buying Merc?


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Are pushrod engines being manufactured anymore ? [Re: OneEyeJack] #4591730
12/02/17 07:07 AM
12/02/17 07:07 AM
Joined: Feb 2003
Posts: 7,685
Jupiter, Florida
Cujet Offline
Cujet  Offline
Joined: Feb 2003
Posts: 7,685
Jupiter, Florida
Originally Posted By: OneEyeJack
Chevy pushrod V8's make a lot of power in less space than many other engine configurations.


In fact, I am unaware of any modern production engine that has better power to weight or power to size. So much so, that it takes serious technical effort just to match the run of the mill LS3 in outright output.

In fact, a detuned, RPM limited, and reduced displacement (5.5L) normally aspirated, without adjustable cam timing, Chevy Small Block is what is currently used in the C7r, and it FLAT OUT cleans up in the racing circuits against uber high tech engines from Ford, Ferrari, Porsche, Jaguar and so on.

Last edited by Cujet; 12/02/17 07:14 AM.

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