So, on a 472, are chp-VT61 rockers good ?

Roy Heisenberg

Roy Heisenberg

The 472 Crank is stronger due to overlap
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What vehicle(s) do you drive?
472 Caddy in a ‘75 Jeep J-20 TH-400 Dana-60 100LL
00168D4D-E349-44B5-9F45-F02A44BAB7C3.webp Howdy:

What do you guys think of the CHP rocker shafts? Will these work well with the Howard’s 292 or the old MTS#20 camshaft? I want to run Rhoads lifters, and need the adjustment feature to dial in my rebuilt 472.

If you have run these, are you happy with them?

Thanks,
Roy
 
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9F838587-72CB-4D45-AC58-E9413941F57A.webp Or, are these VT-61 rockers too complex, too much like the FE rockers, and adjustable rockers just adds one more cracking/failure point?

So, anyone try the cheaper Harlan Sharp inspired option as seen above? They claim to have a 1.7 ratio...

How ‘bout this... vote #1 for the VT-61 $900.00 option, and vote #2 for the budget $575.00 rockers.

Thanks for your time and consideration,
Roy who needs Damn Good Rockers
 
I vote that you buy either one and then send them to me for long term evaluation. Like, real long term!

Actually, both are works of mechanical art and I'd be happy either way.
Now, there may be someone with personal experience with those who sees things differently. No offense taken or intended on my part.

bro. d
 
Id take Adjustable anyday over the alternative.. they give you readability to grow your future cams Hahahaha

Those are really good

I dont know why part number I have on the 425 non adjustable MTS rockers. Thing is you have to shim them and get much closer on pushrod length yes I had to shim the stands

I also know the older Mts rockers had issue with studs they were clearences to clear the studs or nuts !
 
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OK, I made the call, and now have a clear path. Called Pops back in North Dakota, and gave him the pitch... He said having the option to adjust is just smart, and said he has had good luck with all Harland Sharp rockers. Looks like the 472 Jeep will have the VT-61 shaft rockers soon.

One thing for sure... I never regret paying for quality parts!

Thanks for the help and direction,
Roy who Dances with 472
 
Roy Heisenberg said:
OK, I made the call, and now have a clear path. Called Pops back in North Dakota, and gave him the pitch... He said having the option to adjust is just smart, and said he has had good luck with all Harland Sharp rockers. Looks like the 472 Jeep will have the VT-61 shaft rockers soon.

One thing for sure... I never regret paying for quality parts!

Thanks for the help and direction,
Roy who Dances with 472
Click to expand...

Both you and Pops are firing on all the right cylinders!! Quality will out!!

bro. d
 
Quick update.... Did the order for the VT-61 rockers, and now I just need a cam and some new Springs. Looks like 2019 will be a great, grand year !

Thanks for all the help and good ideas,
Roy
 
I wasnt going to comment on cams but I cant help myself .. its apparent your looking to make power atleast some .

I dont care for either cam

I dont really know what the 292 cam is but the ones they list are low on lift although some are better than the 20 .

Is the 292 a hyd roller?
 
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Cad Man is right, There are betters cams out there.

I was looking at a cam with street manners, figured out what i wanted and then contacted Howard cams. They hooked me up with a more aggressive (lift and .05 duration) lobe shape than any off the shelve Cadillac cams have. It might be worth it to send an email and see what they can do for you.
 
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I gotta ask why rhoades ?


The duration on the 20 is around 244@.05 if it were ground on 108 lsa 4* advanced you'll make more bottom end (2000up) than a mt10. The biggest problem with most mts cam is lazy lobes. The 10 has the best out of them but its woefully small if you want power


Rhoades are a mistake. They are a marketing gimmick. A leaky lifter is a leaky lifter that is the last thing you want


Oops I wasnt oh well hahahaha
 
Cad Man said:
I gotta ask why rhoades ?

The duration on the 20 is around 244@.05 if it were ground on 108 lsa 4* advanced you'll make more bottom end (2000up) than a mt10. The biggest problem with most mts cam is lazy lobes. The 10 has the best out of them but its woefully small if you want power
Rhoades are a mistake. They are a marketing gimmick. A leaky lifter is a leaky lifter that is the last thing you want

Oops I wasnt oh well hahahaha
Click to expand...

Yeah, but!!

Certain "leaky" things have their place. Or at one point they had their place.
Now if only I could remember where that place was. Hmm.

bro. "limpy," "leaky" d

PS - My first Caddy build used Rhoades lifters. I had a plan and they were used to facilitate that plan. Too bad all of the elements didn't come together. Still, Rhoades lifters have their place. That said, I do agree with Bro. Cad Man that they probably aren't needed when building the Big Cad engine. My initial thought was to use the Rhoades lifters to tame down what I thought was a fairly "stout" grind. Wrong! What I have since learned is that with these large engines (especially the 500+ variety) you have torque that other engines simply can't provide - even with grinds that otherwise would be too large. Therefore there is less need to "crutch" low end torque with leaky lifters. Jus, sayin!

d
 
Gentlemen,

I have been a big fan of leaky lifters ever since I put the 455 in my old ‘66 LeMans with a factory 041 cam... To this day, the ‘66 can still run a 11.94 in the Quarter Mile with 3.55 Gears.

It is the best combo I have ever built, and suspect a 472 or 500 could do even better....

Jim Hand invented this combo, and here is the link

http://www.silverstatepontiacs.com/jharticles/jharticles5.html
 
9968098C-350E-4004-B07E-A01F408595D1.webp Guys,

I am willing to drop the leaky lifters, and just want a cam that will last for years, sound nasty with open headers, and make some power when wound up in the 472 J-20 JEEP. You guys have anything that will sound more Nasty than this?

Regards,
472 Roy
 
You would need to get us some more info about your build and what you intend to do with it.
-Heads
-Valves
-Compression ratio
-Intake
-Exhaust


I assume that when you're looking at cams like these the engine has a mid to high compression ratio. If you use the stock heads with stock valves or stock ported heads with slightly bigger valves i would chose a single pattern, Maybe even an reversed dual pattern. If this is the first time your choosing a cam it might be better to let someone that knows what there looking at pick one.
 
Some Howards Hyd roller lobe profiles
For Roy's 472

Big thing is deciding split profile or no?
He wants Pro Comp heads and
12 or 13 to 1

At Engine masters when he ran 3 sets of full ported Bulldog MTS heads against the Pro Comps at approx 330 cfm . The Mts heads were all flowing around 350 cfm
..

All were bolted on the same bottom end with the same intake and headers

This showed there is more to head flow than just amount of cfm !!

A 507 With Pro Comps 13 to 1
262@.05 solid flat tappet with 108 Lsa
1150 dominator CH made 728hp

767 on alcohol

More than 2 of the 3 Aluminum head motors made..!!

BHR255400
.006 - 307
.020 - 282
.050 - 255
.200 - 178

.400 lobe lift
With 1.72 rocker = .687

BHR257400
.006 - 309
.020 - 284
.050 - 257
.200 - 180

.400 lobe lift
With 1.72 rocker = .687

BHR259400
.006 - 311
.020 - 286
.050 - 259
.200 - 182

.400 lobe lift
With 1.72 rocker = .687

BHR265400
.006 - 317
.020 - 292
.050 - 265
.200 - 186

.400 lobe lift
With 1.72 rocker = .687
 
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Maybe this
108 or 110 LSA ground 4* advanced

Intake Lobe
BHR259400
.006 - 311
.020 - 286
.050 - 259
.200 - 182

.400 lobe lift
.687 lift

Exhaust lobe
BHR263387
.006 - 315
.020 - 290
.050 - 263
.200 - 182

.387 lobe lift
.657 lift

I like that combo ...
 
Would set it up with Bee Hives at
135 - 145 seat and 380 or so open

We can pick springs when you figure out if this is good for you

You can order directly from Howard's but they charge MORE than if you go thru Competition Products. They are owned by the same guy in the same building

Cam takes about a week

This cam will be totally awesome..
Killer with 12 to 1 and Pro Comps..
It will sound BAD ASS and more importantly be BAD ASS

you'll be in the 700hp club easy

Nate bought my
Lunati 261@.05 .650 lift 108 lsa
Hyd roller maybe he can link a video of it running in his 519

I can but it's with Boogieman top end

 
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Awesome ! This will be my best running 472, EVAH !!!

Thanks,
Roy
 
So what you want to do is call
Competerion Products and tell them you want to order a dual pattern hydraulic roller 500 Cadillac cam with

Lobes

Intake lobe BHR259400
Exhaust lobe BHR263387

108 LSA
Ground 4 degrees advanced
 
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