SSG_Karg
Enhanced member
Available in solid roller flavor?
My 422 smallblock build
- Thread starter SSG_Karg
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SSG_Karg
Enhanced member
Good to hear. I’m sure my car probably weighs 1000# more but it should not have much trouble running an 11.50, which is all I can run without a bar in the car and I’m not interested in adding one.
SSG_Karg
Enhanced member
I’d still be interested to hear your thoughts on camshaft specs.
yellow rose
Overnight Sensation
Because the intended RPM doesn't mean a thing. They should NEVER put that junk in their catalogs.
Think about it. A Strip Dominator on a 273 would take a totally different cam and a significantly smaller carb when compared to a 340 or a 408 or it will be a pig. That's one reason why guys lose bottom and middle using a single plane. Way too big of a carb, and I don't mean CFM ratings. I mean Venturi diameter.
A dual plane can take way more carb than a single plane can before you lose bottom and middle end.
Cam timing is a HUGE factor in driveability and most guys use too LITTLE duration and way too wide a LSA and the intake manifold gets blamed.
I'll say it again, a GOOD single plane will beat the pants off the best dual plane every single time. But you have to stand your ground and not let cam grinders do crazy stuff. You have to buy a tuneable carb and work with it.
If you build it correctly, the single plane wins every single time.
512Stroker
We are all here because we are not all there.
For an off the self selection, I would look at this cam
I tend to lean toward the conservative side for a primary street application.
I believe this cam would let your heads work well, it may be a bit limited by your intake manifold.
Howards Cams Steel Billet Mechanical Roller Camshafts 711313-08
From my big block dyno tests I see no reason not to run the dual plane with any of the cams mentioned. With a well executed dual plane I think you will be up about 3-5% in power in your cruising range and even @ 6,000 rpm. But I am getting old and my thinkin' may not mean crap.
yellow rose
Overnight Sensation
That's pretty much what I called out and with a 1.6 rocker he'd have .624 gross which is not as much as I'd like but it's a damn but better than .58ish.
512Stroker
We are all here because we are not all there.
Yup I dont know what rocker ratio the OP intends on using, but I was thinking 1.6 when I made the cam recommendation.
I came up with .602 net lift with the 245 duration should make drive able power for the street and be fun at the track.
ValiantRacing
Well-Known Member
I am sure someone will build one for you, check with Bullet or Delta cams, or just run solid lifters
SSG_Karg
Enhanced member
Using 1.5 ratio Mopar ductile iron rockers.
SSG_Karg
Enhanced member
I like it, thanks for the suggestion.
512Stroker
We are all here because we are not all there.
IMO the heads you have would be better suited for 1.6 ratio application to make better use of a good mid range cam. But hay if you got'em run'em.
SSG_Karg
Enhanced member
Yeah unfortunately, or fortunately depending on how you look at it, I already have the 1.5s and I don’t want to drop $1200 on a new set of rockers.
512Stroker
We are all here because we are not all there.
I hear ya $
You can always make your cam choice and upgrade the rockers at a later date.
Life is full of compromises
justinp61
Well-Known Member
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Yes you are, you're building a 422 with a 4" stroke not a 344 with a 3.31" stroke. Every 4" stroke engine I've been around had gobs of bottom end unless someone made a bad decision choosing parts. My 408 ran a victor with a 260/264 @ .050" flat solid and pulled everywhere. I shifted it at 6400 as it went no faster shifting anywhere above that.
Even my 340 with a Weiand X-Cellerator single plane and a 236/242 @ .050" hydraulic pulled well down low. I'm not a fan of dual plane intakes.
Too many see every engine combo through a dragstrip lense . This combo while not maximizing every last 1/4 HP will deliver what the SSG Karg is looking for . And doing it with his exhisting components . If he wants to change directions later he can always add a different cam or rockers .
You really only need the 1.6’s on the intake side if you ever desire to do an upgrade.
Wyrmrider
Well-Known Member
"majority of my driving will be between idle and 6500. " and how much stop and go and how much highway?
If you gave Jones all the detail he'll be real close on the cam
I like iron rockers but do not go nuts on the lift, you can roll the nose over limiting lift and still have the same duration at .200 and .300 cam lift
detail your rockers the ways YR suggests
If you gave Jones all the detail he'll be real close on the cam
I like iron rockers but do not go nuts on the lift, you can roll the nose over limiting lift and still have the same duration at .200 and .300 cam lift
detail your rockers the ways YR suggests
j par
Well-hung Member
stick to your guns brother don't let the internet gurus talk you into something you don't want...
I ran Factory 273 rockers the first year or two I had my Stroker motor with near 600 lift.. never a problem..
What did Ken say at Oregon cam for a cam? I thought you said you called?..
I'm following this post and taking notes. I have a 69 Dart GTS without the original drive train that i'm wanting to build just like this. I have a fresh .030 block decked to .005 with speed pro H116 pistons and ported mag heads. I switched directions after buying some ported W2 heads with rocker gear and intake. Now i'm wanting a stroker motor. I have a blow proof and 4 speed. Basically I just need the stroker kit, and some W2 headers and a cam. 
SSG_Karg
Enhanced member
Any thoughts on this one?
Check out this page from Summit Racing Lunati Voodoo Camshafts 40200733
I have heard that the large cubic inch engines will actually make a cam “seem” smaller than it would in a stock displacement engine, effectively lowering the basic operating range by approximately 500rpm. Is there any truth to that?
Check out this page from Summit Racing Lunati Voodoo Camshafts 40200733
I have heard that the large cubic inch engines will actually make a cam “seem” smaller than it would in a stock displacement engine, effectively lowering the basic operating range by approximately 500rpm. Is there any truth to that?
yellow rose
Overnight Sensation
I don’t get the big split, but if you had Lunati pull it back to 108, maybe 107 it would lower peak RPM a bit and help with all that at .050 timing.
Again, not to beat that dead horse into mush (que Jpar for the emoji) but consider your heads were designed in the mid 1970’s and should be treated that way when you select a cam and really everything else.
The exhaust is very very good and I can’t think of a reason to add exhaust duration and then open up the LSA.
The best all out LSA for those heads is always 109 unless you have a powerglide and then 111 and then maybe.
For less than an all out deal, 107 or 108 is much better. I can make the arguement with that much timing you can run that cam on a 106 with a 4 speed and it will melt your face in the lower mid range.
There is a truth to a larger engine making a bigger cam seem smaller just like a 318 will make that cam seem larger if not huge.
That is the exact cam I have for my 360/6 pack engine @ 11.1 comp ratio. Still building it. I was going to do a 408 with it. But reeled it back for now. I’ll get to the stroker later.
That is the exact cam I have for my 360/6 pack engine @ 11.1 comp ratio. Still building it. I was going to do a 408 with it. But reeled it back for now. I’ll get to the stroker later.
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