Boss 429 vs. 427 SOHC- which one was best ? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 66 (permalink) Old 08-03-05, 07:01 AM
trippingtoo8track@yahoo.com
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Boss 429 vs. 427 SOHC- which one was best ?

I've often thought of these 2 Ford motors as the epitome of Ford BB
power- question:

If each one took its turn being installed in the same car, with maximum
tuning and rear gear, which would be the fastest ?

Which one would dyno the most HP ??

I always tended to favor the 429 Boss as it was a more modern design,
but recently got to see a running Cobra that someone stuffed a SOHC 427
into- WOW- that cammer is one nasty beast too !

any opinions ?

 
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post #2 of 66 (permalink) Old 08-04-05, 12:01 AM
geewhiz
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Re: Boss 429 vs. 427 SOHC- which one was best ?

trippingtoo8track@yahoo.com wrote:
>
> I've often thought of these 2 Ford motors as the epitome of Ford BB
> power- question:
>
> If each one took its turn being installed in the same car, with maximum
> tuning and rear gear, which would be the fastest ?
>
> Which one would dyno the most HP ??
>
> I always tended to favor the 429 Boss as it was a more modern design,
> but recently got to see a running Cobra that someone stuffed a SOHC 427
> into- WOW- that cammer is one nasty beast too !
>
> any opinions ?


I have read that when Ford wanted its drag racers to switch from the 427
SOHC to the Boss 429, the racers really lost of lot of horsepower and
engine speed due to the 429's heavier crank and bigger pistons, which
used more power to overcome its inertia.

Not having been there myself, I can only repeat what I read.

Gerard
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post #3 of 66 (permalink) Old 08-04-05, 07:01 AM
cricket
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Re: Boss 429 vs. 427 SOHC- which one was best ?

There is some merit to that observation- the 429 had a 3" main journal,
and the 427 had a 2.75" main journal- the smaller main journal will
have less friction and make more power and rev higher, given the same
airflow, cam, carb, headers, tuning. Reason being the larger journal
has more area in the bearing to produce rubbing friction on the crank.

But it seemed to me the 429 had a more modern cylinder head. The one
thing I found odd about the old FE design was, the pushrods were
interfere with the intake ports and are in the way- the flow has to go
around the pushrod bulges in the intake.

 
post #4 of 66 (permalink) Old 08-04-05, 10:01 AM
walt peifer
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Re: Boss 429 vs. 427 SOHC- which one was best ?


"cricket" <hsf18@epix.net> wrote in message
news:1123156445.912338.279630@f14g2000cwb.googlegroups.com...
> There is some merit to that observation- the 429 had a 3" main journal,
> and the 427 had a 2.75" main journal- the smaller main journal will
> have less friction and make more power and rev higher, given the same
> airflow, cam, carb, headers, tuning. Reason being the larger journal
> has more area in the bearing to produce rubbing friction on the crank.
>
> But it seemed to me the 429 had a more modern cylinder head. The one
> thing I found odd about the old FE design was, the pushrods were
> interfere with the intake ports and are in the way- the flow has to go
> around the pushrod bulges in the intake.
>The question is what do you mean by fastest? straight out acceleration or
>maintained high speed. The boxx 429 only had a breif history on the
>nascar/usac circuit. It could relaiably push a car around the track in
>excess of 150 mph for hours. While the 427 cammer dominated many local drag
>strip throughout the 60's and early 70's



 
post #5 of 66 (permalink) Old 08-04-05, 11:01 AM
one80out@hotmail.com
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Re: Boss 429 vs. 427 SOHC- which one was best ?

cricket wrote:

> But it seemed to me the 429 had a more modern cylinder head. The one
> thing I found odd about the old FE design was, the pushrods were
> interfere with the intake ports and are in the way- the flow has to go
> around the pushrod bulges in the intake.


Ahem, the SOHC FE has no pushrods.

180 Out

 
post #6 of 66 (permalink) Old 08-04-05, 02:01 PM
trippingtoo8track@yahoo.com
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Re: Boss 429 vs. 427 SOHC- which one was best ?

ahem- read the post- it says "the old FE design" in regard to that
statement on pushrods.

I'm well aware that the SOHC had no pushrods- otherwise, it wouldn't be
a SOHC, now would it...

I had a 360 FE in a ' 76 F150

 
post #7 of 66 (permalink) Old 08-05-05, 02:01 PM
DeserTBoB
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Re: Boss 429 vs. 427 SOHC- <---Bullshit artist in the house

On 3 Aug 2005 05:15:12 -0700, trippingtoo8track@yahoo.com wrote:

>
>any opinions ? <snip>


Yes. "trippingtoo8track@yahoo.com" is really:

Charlie Nudo
160 Bear Run Dr.
Drums, PA 18222
thenudofamily@epix.net

....a confirmed petty crook, bullshit artist and spammer on Usenet.

You can pretty much ignore everything he says. He's a professional
bullshitter who usually doesn't know his ass from an unbaked pizza.

Save yourself some message window space...kill file this moron now.
 
post #8 of 66 (permalink) Old 08-07-05, 07:08 AM
trippin28track@yahoo.com
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Re: Boss 429 vs. 427 SOHC- <---Bullshit artist in the house

this "desertbob" guy hates American cars and hates V-8's, calls them
"gas hogs"- and he actually bought a new diesel powered Volkswagen car
POS at one time- so take his post in that respect- he's an
anti-American asshole that should be deported.

 
post #9 of 66 (permalink) Old 08-07-05, 05:01 PM
Wound Up
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Re: Boss 429 vs. 427 SOHC- <---Bullshit artist in the house

<trippin28track@yahoo.com> wrote in message
news:1123416390.617090.158160@g43g2000cwa.googlegroups.com...
> this "desertbob" guy hates American cars and hates V-8's, calls them
> "gas hogs"- and he actually bought a new diesel powered Volkswagen car
> POS at one time- so take his post in that respect- he's an
> anti-American asshole that should be deported.


Well, with that argument, I'm convinced. Organize a militia to round him
up, hog tie him, and send him to Gitmo.

Why did you change your screen name just now?


--
Wound Up
ThunderSnake #65


 
post #10 of 66 (permalink) Old 08-07-05, 07:01 PM
Whole Lotta Tom
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Re: Boss 429 vs. 427 SOHC- <---Bullshit artist in the house

trippin28track@yahoo.com wrote:
> this "desertbob" guy hates American cars and hates V-8's, calls them
> "gas hogs"- and he actually bought a new diesel powered Volkswagen car
> POS at one time- so take his post in that respect- he's an
> anti-American asshole that should be deported.



Snif?

Tag team.

Brrr.

You guys know what to do.

--


--
Tom

My diesel truck runs on used veg oil!
http://www.freewebs.com/vegtruck/index.html

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Visit the Cleveland Engine Forum
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of course, that believes you can do these things. Among them are H.L.
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or businessman from other areas. Their number is negligible and they
are stupid."

--President Dwight D. Eisenhower


 
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