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Best ET for a steetable 440 auto

Yes that was interesting. Funny how they talk about a basic build with no high budget parts, but I bet those heads would be big $ to replicate! If I remember right 2.25 I valves! Do valves ever get to the point that the weight becomes a factor and you have to go Ti ? I know from my motorcycle racing days anything over 40mm Intake they recomended them.
 
Yeah, there comes a time when it is helpful. We are putting $3,000 worth of titanium valves (2.20/1.80), retainers and locks in a pair of 331 hemi cylinder heads. But I run 2.25/1.81 stainless steel valves to 7,500 rpm in my big blocks.
 
So are they basically preloading the the hyd roller lifters to the point of making them solids? Was the idea of moving the dowels in the head to help center the valves toward the center of the bore to help unshroud them? Seems like I remember someone telling me that unshrouding the valves was almost as helpful as bigger valves. Love learning the hows and whys of performance!!!
 
To answer the questions, yes and yes. I have competed against Randy Malik. RAMM up in Canada has had some really good results moving the head around on the big block. Too much work for a lazy guy like me so far. Maybe try it later when 787hp from my 451 and 928hp from my 500 isn't enough.
 
You da man! I did like the heat isolation tricks he used.
 
To answer the questions, yes and yes. I have competed against Randy Malik. RAMM up in Canada has had some really good results moving the head around on the big block. Too much work for a lazy guy like me so far. Maybe try it later when 787hp from my 451 and 928hp from my 500 isn't enough.

IQ52/Jim can you share details ? {that you can} or maybe post a link to your build, if you've already posted it before somewhere...

I seem to remember the build, {great #'s by the way too, cylinder heads baby}
but not sure where it was MMM or DC .com or on here

a wise ol'man once told me...
"when building a performance/race engine, there 3 things that are a must

#1 well flowing ported cylinder heads

#2 good flowing ported cylinder heads

last but not least;
#3 great flowing ported LeRoy Engine cylinder heads"

the better the heads, the better the engine,
Most of Mopars wedge heads are notorious for being the biggest choke point in these combos,
from being able to make the most power per cubic inch...

I embellished a little IQ52/Jim...LOL...

69 gtx I'll add, the rest of the engine is mainly just an air pump,
hopefully with quality/durable parts {light & forged wherever possible},
hopefully with a good ring & head seal, decent compression
& a good machinist/assembly man, so it'll actually last,
quality hardware, not cheap crap, quality & ample oiling system
& a good well tuned hotter ignition system, doesn't/won't hurt either,
with a proper sized & style cam/valve train components, "for your specific usage/expectations",
with a well tuned/properly sized/style induction system & proper sized/style exhaust/headers/collectors,
is a means to regulate the amount of air...

I know kind of oversimplifying, http://www.wallaceracing.com/Calculators.htm
it only takes about 480-500-520 crank hp @ about ballpark 3500-3600#'s,
depending on the cars actual real weight, the altitude, weather & track conditions combined,
all can/will effect the specific combo, to run into the mid 11's, that's if you can make it hook,
with the proper wheel speed & move off the line pretty well, it needs a well tuned combo...

there's a good basic book on Mopar A-B & E-body,
proven/tried & true drag race Combo's & what it takes to run a specific #,
they're older but updated books, somebody will say it's old Purple Shaft mentality,
for getting into the 11's, but the basic formula still applies today too,
just a guideline to help, it's not rocket science, don't over complicate things,
it's all been done before...

Mopar Performance "Chassis 9th edition" #P5007160, it's like $30,
also "Mopar Engines 9th Edition" speed secrets & racing modifications for Chrysler V-8 & 6 cylinder engines #P5249704 for like $25,
also Torqueflite A-727 Transmission Handbook by Carl Monroe HPBooks-1399
you can get them all at Mancini Racing IIRC


It's the whole set up &/or power to weight ratio, it's where the weights at,
how the car works & how the weight transfers, the cars suspension {how well it works},
weight of the reciprocating parts/wheels & tires {lighter generally better},
the gearing & trans clutch or a converter, all matched & working well together,
matched properly to the specific combo {camshaft, converter, gearing, overall weight mainly}
& as light as possible, helps to make it easier too, with less mass/weight to move the better...

what works for one specific combo, may not work so well with another combo

it's the whole combo, in a heavy car, it's even more important to be spot on...

streetable is kind of subjective,
what will the owner tolerate as being "streetable",
what I consider streetable, may not be what someone else considers streetable...

there's always boost, you can use a centrifugal blower,
roots blower, screw blower, turbo/s or N20 too,
you can do allot of different type builds, to achieve a mid 11 second 3500# car
But a specific price point & budget, is usually the biggest deciding factor on what's used/built...

69 gtx good luck

there's probably 100 different builds/combos,
posted here someplace or other, that can be made to work...
 
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Yeah, there comes a time when it is helpful. We are putting $3,000 worth of titanium valves (2.20/1.80), retainers and locks in a pair of 331 hemi cylinder heads. But I run 2.25/1.81 stainless steel valves to 7,500 rpm in my big blocks.


Funny as we have a 331 Hemi in my brothers garage right now he is going to build for a friends hotrod. I will try to remember and take my camera Sunday when I go over his house to work on my buddies car to get some pics of it as its apart and he just got the heads back from being cleaned and surfaced. Ron
 
Budnicks, I have those old DC chassis & engine books from the 80's. Good guide lines for sure, but I figured that they were way outdated. I was reading that also your intake manifold needs to flow 10-15% more than your heads and that they are very often over looked in the big picture when doing a top end. I wish I could remember the article but there is a shop that does nothing but intakes and had a run down on all the popular mopar BB intakes. If I find it I'll post it. I figure I'd need 550-575HP to run the # as I'd like to do it through the mufflers with street tires @ 3800lbs. I am putting electric cut outs on the car so they could be used if nessesary. If it was strictly a drag car I could do it with probably 500-525 as you stated. Guess I'm old now and I want it to do it all. Probably my last big project. Then I'll have 20 years to fine tune it:hello2:
 
So in that article they mention filling in the prt floor till it affected flow. Is this to help keep the port velocity up at low rpms? Help prevent stumble at low RPM WOT?
 
You may be thinking of Wilson Manifolds? ?? Truth is that who ever ports your heads will likely be able to work the manifold as well. But for a street strip car in that hp range you don't need alot of manifold work to meet your goal.
 
Yes I think your right on Wilson.
 
That's the article! Anyone have any feed back on their ideas? I kinda get the idea, but how does that jive when using a 850 or 950 cfm carb? If my math is correct 4 x 300 = 1200 so if your intake & heads flow 300 per port wouldn't the carb be the restriction. Help me out here guys in the know.
 
1. '300 cfm' is at a specified lift and 28" H2O

2. I think you're assuming 4 ports statically draw 300 cfm at the same time, which they don't, for multiple reasons.
A. 4 cylinders are not on the intake stroke at the same time.
B. Depressions in a running engine are not set at 28".

3. If I remember correctly, carbs are or were measured at 10" H2O.

As far as the article...there's no mention of plenum volume or runner length, which dictates wave harmonics, or the 'sweet spot' rpm in which the manifold will work most effectively.

Screw the SA Books and Mopar book crap. Get a copy of Internal Combustion Engine Fundamentals by Heywood...you'll actually learn how engines work, instead of mediocre explanations of things that may or may not be true.

I'm currently working on a set of heads for a 364 in3 engine w/ a 6400ish shift point. They currently have a min cross section of 3.1in2 and flow 350 cfm at .600". This is the approximate size of an out of the box Victor 'race' head for a 440. At 3600 lbs the car should be knocking on 10s w/ a mild cam on pump gas. What's wrong w/ BB Mopars? I think it's the consensus that Performer RPM 440s are adequate bc so and so made *** hp w/ them. That, and being satisfied w/ some moderate hp gain from say, a cam swap, even though there is more potential not being realized.

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So in that article they mention filling in the prt floor till it affected flow. Is this to help keep the port velocity up at low rpms? Help prevent stumble at low RPM WOT?

Hard to say exactly, but probably got velocity distributed more evenly toward the target fps. Also helps in the general shape of the port and benefiting flow over the short side radius.
 
The only thing I will add for now is it's a very subjective question. Streetable will depend on what one is willing to put up with.
 
The only thing I will add for now is it's a very subjective question. Streetable will depend on what one is willing to put up with.


That is so true. Ron
 
Streetable will depend on what one is willing to put up with.

I'd assume not having to 'put up' w/ much of anything. Barely noticeable idle.

I think he's looking for some kind of advancement over what the 80's books give him for 'recipes', otherwise he'd just build to those. I think he's hoping there've been some breakthroughs in the last 30 years that will either allow him to run a milder setup w/ similar power to, or a similar setup that will blow the doors off of what was hot when those books he has came out.

...of course I could be wrong and we're all just... image.jpg
 
Nope, Herr your right on the money! Thanks for the explantion on the intake. My version of streetable means like you said, barely noticable cam at 850 idle, 12+ vac @ idle, Max 2500-2800 stall converter, 850 vac sec carb, no power boosters, double digit mpg's, and low maintance. There are tons of status quo combos out there. I see lots of guys thinking they need a 500 cu in stroker to get 500 hp. My thoughts are a efficent 440 should be able to do that for less $. Maybe I'm wrong. But we'll find out next year when I hit the streets/track. Gotta do a lot of homework before you start.

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To me streetable means not having to put up with......
 
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