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OHC VS. push rod

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Old Sep 7, 2010 | 09:15 PM
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Default OHC VS. push rod

which is easier to make big power on the over head cam design or the push rod engine? i know push rod tend to run a lot bigger as far as displacement so its easier to make power that way but in general which is the easier route to go with?
Old Sep 7, 2010 | 11:17 PM
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Pushrod. Mainly because it's cheaper and simpler. If money or complexity were no issue, then OHC wins out, but it's vastly cheaper to build power in a pushrod engine than an OHC engine.

A lot depends on what kind of racing you're doing. Drag racing and pushrod is king, for the $/hp ratio. But in class racing you're often required to run the engine the vehicle was made with(Grand Am etc) or a certain spec engine etc.
Old Sep 8, 2010 | 06:56 AM
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There was a nice article in Road & Track about the Camaro SS pushrod engine vs. the DOHC 5.0. Check it out, it's a good read: http://www.roadandtrack.com/auto-news/tech/rival-vees
Old Sep 8, 2010 | 01:12 PM
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Originally Posted by Rebel302
There was a nice article in Road & Track about the Camaro SS pushrod engine vs. the DOHC 5.0. Check it out, it's a good read: http://www.roadandtrack.com/auto-news/tech/rival-vees
that was a good read. it helped out a lot. i guess my question now would be if anyone is running a push rod motor in a s95 and if so what was in installation/conversion like?
Old Sep 8, 2010 | 01:19 PM
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Originally Posted by EI-03-GT
that was a good read. it helped out a lot. i guess my question now would be if anyone is running a push rod motor in a s95 and if so what was in installation/conversion like?
If you mean sn-95 then the '94-'95 cars still had the pushrod 5.0L factory.
Old Sep 8, 2010 | 01:49 PM
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Originally Posted by 67mustang302
Pushrod. Mainly because it's cheaper and simpler. If money or complexity were no issue, then OHC wins out, but it's vastly cheaper to build power in a pushrod engine than an OHC engine.
Up to a point then it's about the same price/complexity wise
Old Sep 8, 2010 | 02:45 PM
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my bad i thought the s95 was the 99-04. I have a 03 gt will i be able to drop in a 351 without major fab work? i know its not gonna be easy but am i biting off more then i can chew with trying to do something like that?
@lizzyfan what point would that be?
Old Sep 8, 2010 | 06:22 PM
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you can use all the mounting hardware and brackets from the 94-95 gt 5.0l. Just make sure you have the k-member and ALL 5.0L brackets and pullies and a longer belt.
Old Sep 9, 2010 | 01:52 AM
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Originally Posted by lizzyfan
Up to a point then it's about the same price/complexity wise
lol, yeah that's true. But at that point it's entered the realm of the ridiculous anyway.
Old Sep 9, 2010 | 08:20 PM
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ya im just looking to get around 450 to the wheels on my daily driver with a NA car and i think that will be a easier with a push rod motor. am i wrong?



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