looking for the right intake for my 426 stroker

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And to show the versatility.. my friend ran one on his summit cam'd 318 w/hedmans and saturday night special converter back in the 90's . Lol
Now im gonna dig it up. I know there's a kit for them.
 
MOPAROFFICIAL said:
And to show the versatility.. my friend ran one on his summit cam'd 318 w/hedmans and saturday night special converter back in the 90's . Lol
Now im gonna dig it up. I know there's a kit for them.
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Interesting , I like the tall intake RRR posted , but never saw anyone around here make the predictor carbs work. They didn't go over real well in drag racing as a whole------even the pros didn't stick w/ them very long , and faded from use quickly. The few I remember , were replaced by big hollies and went faster . ??
 
79410aspenrt said:
if your air gap runs out of steam at 5500 rpm, you have other problems to worry about.
i had a air gap on a 410'' years ago. 6700 rpm all day long. a friend has a air gap on his 340'' and he is at 6800 rpm.
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my 340 had peak hp at 6200 withthe air gap the dyno shows the air gap peaking in the 5500-5600 range with the 426.I can spin the 426 to 7000 but it ain't making any more power . everone thinks it's the intake holding it back guess i'll find out when i get the victor or super victor . I will report back when the intake is changed and tested .
Thanks all for the suggestions
 
Lefty71 said:
Intended use, drag race only? Or prostreet? If you are using a Dominator carb, I would try the square bore M-1 or Victor and use the carb adapter to get up to the Dominator. Signal will be better and should have no issue screaming into the upper limits.
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a little drag racing and running road courses , think I'll be running an 780 or 850 holley , trying to keep it simple , upper limits for me 6500 rpm trying to keep it simple .
Thanks
 
12swinger said:
Mike at B3 is super knowledgeable, and his spacers did a great job of correcting my w2 valve train geometry.
I went with a Trend .105 wall pushrod in 5/16

View attachment 1715446026
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the shop that builtthe engine had to grind the block a bit for the offset rocker arms /pushrods , everything lines up well . Took quite some time to get it right .
Thanks
 
Nat said:
my 340 had peak hp at 6200 withthe air gap the dyno shows the air gap peaking in the 5500-5600 range with the 426.I can spin the 426 to 7000 but it ain't making any more power . everone thinks it's the intake holding it back guess i'll find out when i get the victor or super victor . I will report back when the intake is changed and tested .
Thanks all for the suggestions
Click to expand...

What cam and compression are you running in the 426?
 
Sounds great! Your at the point with a small block where it starts responding well to the same modifications as a big block. Normally those STR-12s and M1 TRs are too big for most small blocks but are tamed pretty quickly at around the 430 cubic mark.
 
took a few hours and emails , but here are the cam specs , not crazy about them might be changing it
lobe lift intake 0.377

exhaust 0.377
valve lift 1.6 rocker

intake 0.603 exhaust 0.603

duration @050 242.6

246.6


lobe separation106

centerline 102

cam timing
opensin 19 btc ex 53

bbclosesin 43 abc

ex 13atc
 
Nat said:
took a few hours and emails , but here are the cam specs , not crazy about them might be changing it
lobe lift intake 0.377

exhaust 0.377
valve lift 1.6 rocker

intake 0.603 exhaust 0.603

duration @050 242.6

246.6


lobe separation106

centerline 102

cam timing
opensin 19 btc ex 53

bbclosesin 43 abc

ex 13atc
Click to expand...


From those numbers I'm thinking you're on the right track. I see nothing wrong with that. From what you've posted.
 
run what you brung
don't make a change without going through the advance cam/ retard cam drill
with compression checks straight up, advanced, retarded
also have you looked into the b3 kit?
I'd do that before spending money on a new cam without running the one you have
cheers
 
thanks i'll give it a try when the car gets out of storage
 
Wyrmrider said:
You guy running roller rockers really need to budget b3's kit and get your geometry righwen you want to push thta many revs- 3/8 pushrods and some block grinding next time you have it apart
I go cup adjusters and hollow pushrods to ensure they get lubed
ask b3
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I planned on running oil thru pushrods but the tech at Smith Bros talked me out of it . He said they have had issues with the oil being pushed back down the pushrod and starving the adjuster/cup of oil. Maybe he thought I was running Pro Stock !
I havent run my engine much yet and am having angst thinking about burned cups & balls . I am going to order another set of oil thru rods .
 
mbaird said:
I planned on running oil thru pushrods but the tech at Smith Bros talked me out of it . He said they have had issues with the oil being pushed back down the pushrod and starving the adjuster/cup of oil. Maybe he thought I was running Pro Stock !
I havent run my engine much yet and am having angst thinking about burned cups & balls . I am going to order another set of oil thru rods .
Click to expand...

I read your post on that on your thread and went to Manton for my oil thru 3/8" .095 wall, got their series 5 type.
 
I've never heard that push down comment before
done oil through the pushaods and the shafts lots of times
most rockers just squirt oil at the adjuster (if you're lucky and the stream misses cuz the adjuster is too far in or out...)
wheras the pushrod is delivering pressurized oil dirctly to the cup
I wonder if the pushrod tip type makes a difference.
when we were doing road racing we used ford sized adjusters and 3/8 pushrods and offset rockers
 
Wyrmrider said:
I've never heard that push down comment before
done oil through the pushaods and the shafts lots of times
most rockers just squirt oil at the adjuster (if you're lucky and the stream misses cuz the adjuster is too far in or out...)
wheras the pushrod is delivering pressurized oil dirctly to the cup
I wonder if the pushrod tip type makes a difference.
when we were doing road racing we used ford sized adjusters and 3/8 pushrods and offset rockers
Click to expand...

What I wonder is ....
DID THAT TECH KNOW WHAT THE **** HE WAS TALKING ABOUT ?!!!!
 
EXcappa said:
I agree with the super victor.
416, bigmouth heads, 268/274 SR made power at 6700rpm
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and , that is exactly where I want my 426 to have max hp , don't want to rev the piss out of my engine 6500-6700 would be perfect
 
Wyrmrider said:
run what you brung
don't make a change without going through the advance cam/ retard cam drill
with compression checks straight up, advanced, retarded
also have you looked into the b3 kit?
I'd do that before spending money on a new cam without running the one you have
cheers
Click to expand...
called the shop that built the 46 and they say geometry on the valve train looks good , they said they spent a shiyload of time setting it up , i'll look at the b3 kit though see if it is needed . I don't plan on more than 6500 rpm , have the revlimiter set at 6400 just to be safe . where do i find this B-3 kit I'm new to this
 
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