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STREET 426 cam reccomendation #3045852
05/28/22 11:51 AM
05/28/22 11:51 AM
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Lima, Peru
domingo Offline OP
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Hello!

I am looking for good choice on an off the shelf hydraulic flat tappet cam for a 426 street hemi.

its a 426 cid (non stroker), alum heads, 9,5:1 compression, and auto transmission.

plan on using a stock torq converter.

just want an ultra reliable engine to cruise around and dont have the trans to run hot-i hate higher than stock stall converters on real street cars.

all i see for sale off the shelf requires at least a 2500 or 3000 rpm tor converter

maybe even somebody might have a "wimpy" hemi cam collecting dust on a shelf??





Last edited by domingo; 05/28/22 12:04 PM.
Re: STREET 426 cam reccomendation [Re: domingo] #3045860
05/28/22 12:11 PM
05/28/22 12:11 PM
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lewtot184 Offline
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i would consider a stock 1970 hydraulic if you want a low maintenance cruiser. other than that the cam would probably have to be a custom grind.

Re: STREET 426 cam reccomendation [Re: domingo] #3045869
05/28/22 12:30 PM
05/28/22 12:30 PM
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Hot 340 Offline
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I'd use the earlier solid lifter stock version. No hydraulics on intersecting valves for me

Re: STREET 426 cam reccomendation [Re: Hot 340] #3045895
05/28/22 01:45 PM
05/28/22 01:45 PM
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Lima, Peru
domingo Offline OP
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Originally Posted by Hot 340
I'd use the earlier solid lifter stock version. No hydraulics on intersecting valves for me


good point.

Re: STREET 426 cam reccomendation [Re: Hot 340] #3045911
05/28/22 02:39 PM
05/28/22 02:39 PM
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Bend,OR USA
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Originally Posted by Hot 340
I'd use the earlier solid lifter stock version. No hydraulics on intersecting valves for me

I raced a 1970 Cuda with a hemi in it in NHRA stock A/S class for 2 1/2 years shifting it at 7000 RPM with no valve clashing issues shruggy work
I had the original Racer Brown (RIP) grind me a cam that would pass tech and used the anti pump up hydraulic lifters he sold in the build back in 1973 up
i know some GM guys that ran in stock classes back then that would use solid lifters in there motors and set the lash from .0010 to .0030 max warmed up to get a few more RPM out of there motors to avoid valve float work
Same thing on some SCCA racers in stock spec. classes work scope up

Last edited by Cab_Burge; 05/30/22 02:47 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: STREET 426 cam reccomendation [Re: Cab_Burge] #3045929
05/28/22 03:38 PM
05/28/22 03:38 PM
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topside Offline
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9.5 is pretty low static CR for a Street Hemi, especially with aluminum heads.
But I don't know what octane the OP is working with.
Sounds like a "smaller" cam would be better for that to keep cylinder pressure up.
I ran 10.8 static CR with ported iron heads on 91-93 octane with no issues, but it had a fairly "big" SFT cam that bled some pressure off.
It was a Crower unit, IIRC upper 240s @ .050 with lift in the .540s, split pattern.
Valve lash adjustments were very rarely needed, but did have to tweak jetting & rods/springs in the AFBs due to low vacuum signal.

Re: STREET 426 cam reccomendation [Re: domingo] #3045930
05/28/22 03:48 PM
05/28/22 03:48 PM
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Morristown Tn.
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71birdJ68 Offline
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I tried a hyd roller in my car and the engine was real lazy.

Re: STREET 426 cam reccomendation [Re: 71birdJ68] #3046323
05/30/22 12:13 AM
05/30/22 12:13 AM
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SomeCarGuy Offline
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Do you already have some parts? Everything I’ve seen on hemis is they can take more compression ratio than a wedge and I’d run higher than 9.5 in an aluminum head wedge.


I want my fair share
Re: STREET 426 cam reccomendation [Re: SomeCarGuy] #3046409
05/30/22 11:55 AM
05/30/22 11:55 AM
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Lima, Peru
domingo Offline OP
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Originally Posted by SomeCarGuy
Do you already have some parts? Everything I’ve seen on hemis is they can take more compression ratio than a wedge and I’d run higher than 9.5 in an aluminum head wedge.


already have parts for it. basically just need cam. car will be just a cruiser.

Gasoline in Peru is crap- rather make sure it wont ping.

Re: STREET 426 cam reccomendation [Re: domingo] #3046724
05/31/22 12:40 PM
05/31/22 12:40 PM
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S.E. Michigan
ZIPPY Offline
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Originally Posted by domingo
Hello!



all i see for sale off the shelf requires at least a 2500 or 3000 rpm tor converter

maybe even somebody might have a "wimpy" hemi cam collecting dust on a shelf??






I can't take the bait, as I had a new reproduction OE '70 hydraulic on the shelf for about 9 years, I'd put it on ebay twice in that time and nobody wanted it, didn't even have any watchers. I actually almost scrapped it at one point but didn't quite have the heart.
Ended up selling it recently on FBBO to a fellow who was tired of running a racing cam on the street.

I'd suggest maybe take a look ( in detail) as to what a stock street Hemi vehicle (the transmission) had, to support the engine.
Ex: A completely stock 10&3/4 high stall street hemi converter fell exactly into the 2500+ range mentioned.
The old Direct Connection chassis manual has some of that information.

(You weren't intending to use a 12" low stall converter from a C body in that car, were you?)

Other than that, here are some puppy cams that might be of interest.

https://www.crower.com/camshafts/mopar-426-hemi-66-71-compu-pro-hydraulic-cam-294-hdp.html

https://www.compcams.com/street-and-strip-227-227-hydraulic-flat-cam-for-chrysler-426-hemi.html

For a few dollars more, can always call rbre and order a 'street cruiser' mystery cam with no specifications, for
more of an old-timey experience of not really having a clue what cam you have, which some may prefer.
https://www.raybarton.com/products/rbre-chrysler-genii-hemi-camshafts












Rich H.

Esse Quam Videri




Re: STREET 426 cam reccomendation [Re: ZIPPY] #3046729
05/31/22 12:59 PM
05/31/22 12:59 PM
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topside Offline
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Zippy, your last paragraph is priceless ! laugh2

I'd bet that "just trust me" cam is a re-packaged pre-existing part, marked up...

Re: STREET 426 cam reccomendation [Re: topside] #3046742
05/31/22 01:32 PM
05/31/22 01:32 PM
Joined: Jan 2003
Posts: 17,800
S.E. Michigan
ZIPPY Offline
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Originally Posted by topside
Zippy, your last paragraph is priceless ! laugh2

I'd bet that "just trust me" cam is a re-packaged pre-existing part, marked up...



Thanks smile

It says on the page they're all from Bullet. Doesn't say which ones, though.

They know their customers better than anyone else!
If customers don't know and don't care, give them what they want: Mystique.

Nothing but respect for them here, but will dish out some crap where it is deserved...and this seems an appropriate area.
Some gearheads LOVE to talk specs (why else are we here?). No supplied specs deprives us of rattling off a bunch of numbers
only total geeks like us can relate to. It ain't right.


Rich H.

Esse Quam Videri




Re: STREET 426 cam reccomendation [Re: ZIPPY] #3046779
05/31/22 03:34 PM
05/31/22 03:34 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline OP
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Originally Posted by ZIPPY
Originally Posted by domingo
Hello!



all i see for sale off the shelf requires at least a 2500 or 3000 rpm tor converter

maybe even somebody might have a "wimpy" hemi cam collecting dust on a shelf??






I can't take the bait, as I had a new reproduction OE '70 hydraulic on the shelf for about 9 years, I'd put it on ebay twice in that time and nobody wanted it, didn't even have any watchers. I actually almost scrapped it at one point but didn't quite have the heart.
Ended up selling it recently on FBBO to a fellow who was tired of running a racing cam on the street.

I'd suggest maybe take a look ( in detail) as to what a stock street Hemi vehicle (the transmission) had, to support the engine.
Ex: A completely stock 10&3/4 high stall street hemi converter fell exactly into the 2500+ range mentioned.
The old Direct Connection chassis manual has some of that information.

(You weren't intending to use a 12" low stall converter from a C body in that car, were you?)

Other than that, here are some puppy cams that might be of interest.

https://www.crower.com/camshafts/mopar-426-hemi-66-71-compu-pro-hydraulic-cam-294-hdp.html

https://www.compcams.com/street-and-strip-227-227-hydraulic-flat-cam-for-chrysler-426-hemi.html

For a few dollars more, can always call rbre and order a 'street cruiser' mystery cam with no specifications, for
more of an old-timey experience of not really having a clue what cam you have, which some may prefer.
https://www.raybarton.com/products/rbre-chrysler-genii-hemi-camshafts












i remember reading someplace stock hemi converters had around a 1800 stall.

not sure about that though.

i am just about trying to decide which cam and converter to go with.

thanks for the links will give em a look.

and yes, i was about to call bullet on the cam. i got a "pure stock" hemi cam from them a while ago.

Re: STREET 426 cam reccomendation [Re: domingo] #3046791
05/31/22 04:15 PM
05/31/22 04:15 PM
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Michigan
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A727Tflite Offline
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Originally Posted by domingo
Originally Posted by ZIPPY
Originally Posted by domingo
Hello!



all i see for sale off the shelf requires at least a 2500 or 3000 rpm tor converter

maybe even somebody might have a "wimpy" hemi cam collecting dust on a shelf??






I can't take the bait, as I had a new reproduction OE '70 hydraulic on the shelf for about 9 years, I'd put it on ebay twice in that time and nobody wanted it, didn't even have any watchers. I actually almost scrapped it at one point but didn't quite have the heart.
Ended up selling it recently on FBBO to a fellow who was tired of running a racing cam on the street.

I'd suggest maybe take a look ( in detail) as to what a stock street Hemi vehicle (the transmission) had, to support the engine.
Ex: A completely stock 10&3/4 high stall street hemi converter fell exactly into the 2500+ range mentioned.
The old Direct Connection chassis manual has some of that information.

(You weren't intending to use a 12" low stall converter from a C body in that car, were you?)

Other than that, here are some puppy cams that might be of interest.

https://www.crower.com/camshafts/mopar-426-hemi-66-71-compu-pro-hydraulic-cam-294-hdp.html

https://www.compcams.com/street-and-strip-227-227-hydraulic-flat-cam-for-chrysler-426-hemi.html

For a few dollars more, can always call rbre and order a 'street cruiser' mystery cam with no specifications, for
more of an old-timey experience of not really having a clue what cam you have, which some may prefer.
https://www.raybarton.com/products/rbre-chrysler-genii-hemi-camshafts












i remember reading someplace stock hemi converters had around a 1800 stall.

not sure about that though.

i am just about trying to decide which cam and converter to go with.

thanks for the links will give em a look.

and yes, i was about to call bullet on the cam. i got a "pure stock" hemi cam from them a while ago.


A real Street Hemi converter behind a stock Hemi will stall between 2800 and 3000 depending on tune.

Re: STREET 426 cam reccomendation [Re: A727Tflite] #3046807
05/31/22 04:51 PM
05/31/22 04:51 PM
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lewtot184 Offline
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if this means anything or not; i have a '66 street hemi converter behind a 440. the 440 has some mods, eddie heads, ch28, and a 238@.050" solid cam. the converter flashes at 2300rpm in a 3900lb b-body with a 3.23 gear. there are no mods to the converter.

Re: STREET 426 cam reccomendation [Re: lewtot184] #3046809
05/31/22 04:59 PM
05/31/22 04:59 PM
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Originally Posted by lewtot184
if this means anything or not; i have a '66 street hemi converter behind a 440. the 440 has some mods, eddie heads, ch28, and a 238@.050" solid cam. the converter flashes at 2300rpm in a 3900lb b-body with a 3.23 gear. there are no mods to the converter.


Two different motors, two different stalls.

It’s all about torque.

Re: STREET 426 cam reccomendation [Re: lewtot184] #3046811
05/31/22 05:08 PM
05/31/22 05:08 PM
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Lima, Peru
domingo Offline OP
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Originally Posted by lewtot184
if this means anything or not; i have a '66 street hemi converter behind a 440. the 440 has some mods, eddie heads, ch28, and a 238@.050" solid cam. the converter flashes at 2300rpm in a 3900lb b-body with a 3.23 gear. there are no mods to the converter.


i would think that same converter should stall at lower RPMs on a stock hemi. so 1800 should seem about right? shruggy

ill go check the mopar chassis bible as suggested.

Last edited by domingo; 05/31/22 05:10 PM.
Re: STREET 426 cam reccomendation [Re: domingo] #3046856
05/31/22 06:44 PM
05/31/22 06:44 PM
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lewtot184 Offline
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Originally Posted by domingo
Originally Posted by lewtot184
if this means anything or not; i have a '66 street hemi converter behind a 440. the 440 has some mods, eddie heads, ch28, and a 238@.050" solid cam. the converter flashes at 2300rpm in a 3900lb b-body with a 3.23 gear. there are no mods to the converter.


i would think that same converter should stall at lower RPMs on a stock hemi. so 1800 should seem about right? shruggy

ill go check the mopar chassis bible as suggested.
the 440 with the '66 street hemi converter may have less off idle torque than a stock street hemi due to the cam difference. but, i don't think the torque difference is great. the 440 will have better port velocity but about 12 degrees more duration at .050". i also have a stock 440 with the original stock converter and it does make a little more off idle torque. flash with the stock stuff is about 2300rpm too. neither will do what a factory service manual specs, and neither are overly abused junk parts. i think the factory 226@.050" camshaft is a good fit for what your want; whether mechanical or hydraulic. the '66 street hemi converter i'm using is actually too tight for the cam i'm using, but this car is a driver and i'd change cam before using a looser converter in something that will see highway use.

Re: STREET 426 cam reccomendation [Re: ZIPPY] #3046883
05/31/22 08:12 PM
05/31/22 08:12 PM
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Windsor, ON, Canada
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Originally Posted by ZIPPY
...
Other than that, here are some puppy cams that might be of interest.

https://www.crower.com/camshafts/mopar-426-hemi-66-71-compu-pro-hydraulic-cam-294-hdp.html

I ran the step-hotter SB version, the Compu-Pro 282-HDP: 282/292 advertised, 228/238@0.050", .480/.504 lift on 112 LSA, in a 360 motor, 2300 stall converter and 3.55 rear end.

I wanted a good street grind, this was all that and more. The cam had a wide power-band and great vacum (thanks to the 112 LSA no doubt).

Bottom line: I think that is great advice ZIPPY shared, if you want a little more "oomph" than going a step up may be quite alright I'm thinking.

Re: STREET 426 cam reccomendation [Re: Diplomat360] #3046896
05/31/22 08:53 PM
05/31/22 08:53 PM
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Lima, Peru
domingo Offline OP
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Thanks for all the replies so far.

I am really liking the crower cam ZIPPY reccomended!!! that 112° LSA will work great on the street with power brakes.

https://www.crower.com/camshafts/mopar-426-hemi-66-71-compu-pro-hydraulic-cam-294-hdp.html

I havent bought a converter yet.

Any reccomendations to go along with this cam? I would like a budget concious choice that will do the trick.

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