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Re: stock 400 build
[Re: DaytonaTurbo]
#835869
10/25/10 02:38 PM
10/25/10 02:38 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
 w/ patrick on the intake manifold choices. With the voodoo 60302 being a mild cam and ground on a 112LSA, you wouldn't see a huge difference between hp manifolds and cheapie headers.
I bet you would.....
Dulcich has shown a gain of at least that much on a number of "resto to rad" builds in mopar muscle on a dyno....granted it's westech's dyno that has been accused of being "happy", but look at the relative gain, since it's pretty much back to back pulls on the same dyno....
cleaned up, ported, extrude honed, etc HP manifolds will probably net you 1 or 2 HP over untouched.....heck, on the 300HP magnum crate motor, he saw 5hp difference between 318 and 340HP manifolds, and 10-20HP on top of that with various headers, and similar torque improvements throughout the RPM range.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: stock 400 build
[Re: DaytonaTurbo]
#835871
10/25/10 02:56 PM
10/25/10 02:56 PM
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Joined: Dec 2007
Posts: 20,462
Puttin' on the foil in Charles...
not_a_charger
Mr. Big Shot Moparts Moderator
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Mr. Big Shot Moparts Moderator
Joined: Dec 2007
Posts: 20,462
Puttin' on the foil in Charles...
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Ok...now what about shorty headers vs. full length? I'm wondering if the tradeoff in performance would be worth the ease of use with shorties?
Earning every penny of that moderator paycheck.
DBAP
"They don't think it be like it is, but it do."
- Oscar Gamble
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Re: stock 400 build
[Re: DaytonaTurbo]
#835875
10/25/10 03:09 PM
10/25/10 03:09 PM
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Joined: Dec 2007
Posts: 20,462
Puttin' on the foil in Charles...
not_a_charger
Mr. Big Shot Moparts Moderator
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Mr. Big Shot Moparts Moderator
Joined: Dec 2007
Posts: 20,462
Puttin' on the foil in Charles...
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Yeah, same here.
I'm thinking that for a nice street cruiser, that any of the mild combos listed here would be just fine with HP manifolds.
Earning every penny of that moderator paycheck.
DBAP
"They don't think it be like it is, but it do."
- Oscar Gamble
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Re: stock 400 build
[Re: DaytonaTurbo]
#835880
10/25/10 03:43 PM
10/25/10 03:43 PM
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Joined: Dec 2008
Posts: 459
pana illinois
bigblock4x4
OP
mopar
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OP
mopar
Joined: Dec 2008
Posts: 459
pana illinois
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Quote:
Yes, however cams with a wider LSA tend to be not quite as sensitive to headers vs hp manifolds in as mild of an application like this. I think he could see a 10-20hp difference at best with headers vs hp manifolds, however whether or not he considers that significant enough to justify going to headers, that's up to him.
i alreay got the headers,and an intake,still gotta get a carberator,ignition,and timing chain,and also rings got a tranny and convertor,also need 8 3/4,gonna leave it column shifted i'm gettin closer by the minute(or as my budge allows)thanks everyone for yor input it is helpin more than you know.
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Re: stock 400 build
[Re: DaytonaTurbo]
#835881
10/25/10 03:44 PM
10/25/10 03:44 PM
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Joined: Mar 2008
Posts: 390
kentucky
superbyrd
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 390
kentucky
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but,all the magazine gurus,hype,and crap,is all with all the carb they can run,with maximum jetting,and peak rpm horsepower,blah,blah,blah. not at driving around town and street crusing,where,you will not notice a lick of difference between cleaned up HP manifolds and cheapie headers. and then factor in the future leaks,tight fit,etc. not worth it. really. and the difference in 2 1/4 over 2 1/2. on your car,with the weight and all things considered,2 1/4 will more than suffice. i don't know how many people you see on this board,and alot of other places,that are barely making 400hp and actually believe they "need" 2 1/2 or 3" mandrel bent exhaust on their cars.lolol really. well,i guess they might think that if they listen to all that "magazine,perfect world,on paper,westech dyno proven" bullcrap. i read that stuff for what it is.......good reading. then i go with what works in the real world,on the street,etc.
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Re: stock 400 build
[Re: superbyrd]
#835882
10/25/10 05:17 PM
10/25/10 05:17 PM
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Joined: Jan 2003
Posts: 75,324
A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,324
A gulag near you.
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Quote:
but,all the magazine gurus,hype,and crap,is all with all the carb they can run,with maximum jetting,and peak rpm horsepower,blah,blah,blah. not at driving around town and street crusing,where,you will not notice a lick of difference between cleaned up HP manifolds and cheapie headers. and then factor in the future leaks,tight fit,etc. not worth it. really. and the difference in 2 1/4 over 2 1/2. on your car,with the weight and all things considered,2 1/4 will more than suffice. i don't know how many people you see on this board,and alot of other places,that are barely making 400hp and actually believe they "need" 2 1/2 or 3" mandrel bent exhaust on their cars.lolol really. well,i guess they might think that if they listen to all that "magazine,perfect world,on paper,westech dyno proven" bullcrap. i read that stuff for what it is.......good reading. then i go with what works in the real world,on the street,etc.
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i have nothing of value to ad
Your sig pretty much sums this post up . 
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Re: stock 400 build
[Re: JohnRR]
#835883
10/25/10 06:42 PM
10/25/10 06:42 PM
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Joined: Mar 2008
Posts: 390
kentucky
superbyrd
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 390
kentucky
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lots of folks come on here,asking for help,and answers,wanting input on how to make power,most on a budget,or not alot to work with,and the same ole' answers file in.
you guys who swear by the "experts",and magazine "gurus",ever wonder how in the world guys 30-40 years ago ever got a car to move down the track,or make a single horsepower,without your "quench" this,and stroked that,and so and so says this and that won't work???? must have been some kind of miricale. must have never happened.amazing..............
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Re: stock 400 build
[Re: superbyrd]
#835884
10/25/10 06:46 PM
10/25/10 06:46 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
but,all the magazine gurus,hype,and crap,is all with all the carb they can run,with maximum jetting,and peak rpm horsepower,blah,blah,blah. not at driving around town and street crusing,where,you will not notice a lick of difference between cleaned up HP manifolds and cheapie headers. and then factor in the future leaks,tight fit,etc. not worth it. really. and the difference in 2 1/4 over 2 1/2. on your car,with the weight and all things considered,2 1/4 will more than suffice. i don't know how many people you see on this board,and alot of other places,that are barely making 400hp and actually believe they "need" 2 1/2 or 3" mandrel bent exhaust on their cars.lolol really. well,i guess they might think that if they listen to all that "magazine,perfect world,on paper,westech dyno proven" bullcrap. i read that stuff for what it is.......good reading. then i go with what works in the real world,on the street,etc.
I've run a bunch of cheap headers, never had a leak never had to beat and bang them and never banged them up on the ground. If you think Mani's even hi-po units flow as well as a headers you're nutz. Maybe if you run the same choked up 2" exhaust, but with 2.5" and the 1 3/4" tube headers you will pick up HP and MPG's (if you care about that kind of thing).
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Re: stock 400 build
[Re: DaytonaTurbo]
#835885
10/25/10 06:49 PM
10/25/10 06:49 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I dunno, the cheapie summit headers fit my car well and don't hang down low at all. If I had to do it all over, I would buy the summit cheapies again.
that's what I got and a mini starter. Fit fine w/ PS too.
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Re: stock 400 build
[Re: Mr.Yuck]
#835886
10/25/10 06:55 PM
10/25/10 06:55 PM
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Joined: Mar 2008
Posts: 390
kentucky
superbyrd
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 390
kentucky
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not saying the manifolds flow as well as the headers,or even make as much power. but,alot of folks DO have those problems. snag them on speed bumps,have leaks over time,etc. on the same side of that coin,most run stock starters(and constantly cook them)run poor gaskets (that soon leak)and get tired of the tight fit. my standpoint on headers,is,majority of folks car will see little,or no track time. much less rarely ever run for over a few seconds above 4000 rpm. with those factors, huge pipes,and headers are going to produce very little "seat off the pants" feel. cruising around the dairy queen,you won't be able to tell the difference.
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Re: stock 400 build
[Re: superbyrd]
#835887
10/26/10 12:20 AM
10/26/10 12:20 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
cruising around the dairy queen,you won't be able to tell the difference.
Crusing around the dairy queen you won't feel the difference between a 318 and a 440 either. It's all about what you want it to do when you hit the GO pedal. You're right, those not taking their cars to the track need not squeeze every last hp out of their car if they don't want to. I don't think anyone in this thread was suggesting quench or strokers. He said he's on a budget and we all understand. FWIW, cheapie headers usually cost less than what HP manifolds go for.
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