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292 comp hyd cam sbc

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292 comp hyd cam sbc

Postby econo racer » Wed Sep 08, 2010 12:01 am

Has anyone ran this cam on a set of vortec prepped heads on a 400 sbc? 292-501 hyd 244 at 50 deg. gonna be 10.1 comp 406 sbc 3500 stall and 410 gears at about 3300lbs. :D
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Re: 292 comp hyd cam sbc

Postby Boz-Race Engines » Wed Sep 08, 2010 4:10 am

that cam actually prefers a fair bit more comp than that but it will work ok. :)
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Re: 292 comp hyd cam sbc

Postby F-BIRD'88 » Wed Sep 08, 2010 4:43 am

I run same 400 vortec combo with a very similar comp XE284H-10 cam. It runs very strong. Needs a very aggressive timing curve with increased idle timing. 26deg @ idle at minimum. I run the mechanical curve simply locked out 35-36deg. I also run a vacuum advance which adds about 10deg at hiway cruise speeds. A stock distributor timing curve will not work.

Strong power to 6000++ RPM to 6700 excelent throttle response with the 3500 stall and 4.10's The locked out timing provides max idle manifold vacuum ensuring the power brakes function, and clean, consistant idle quality with this cam and the 292H magnum.
High 11's -12.0 performance.

Note: Its up to you to verify rod bolt/cam lobe clearance when using OEM chev style 5.7" rods in your 383 or 400.
Check that before ya button up the oil pan and fire it up. if you need more clearance call comp cams for a small base circle version 292H cam.
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Re: 292 comp hyd cam sbc

Postby jeff swisher » Wed Sep 08, 2010 10:11 am

I like the 292h..have not ran it in that particullar combo...
here is some insight .
It will work with power brakes (at least for us) in a 355" with ported 305 heads with a chamber of 62cc and .043" piston to head 1.94-1.50 valves
Our timing curve will be different than your vortec heads ..we run 22-26 inital and 36-41 total depending on weather
Run 91 octane in our 78 nova with 2-600cfm eddys on a tr1yx tunnel-ram..456 gears and a th 350 with a converter that stalls around 2200...although it is a b&m 3000..
Fun ride ..fun cam ..cold days with 40-41 timing brings the shift points to 7400+ rpm..We run anti-pump up lifters and 110 seat pressure....I feel i could step it up a bit ..but it works...11.94 in the 1/4...it is a daily driver now ..with 275 gears
and the same timing curves.....the car is happy as a lark
I would say with a proper chassis and your added cubes and vortec heads ,,you could possibly beat that number
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Re: 292 comp hyd cam sbc

Postby pdq67 » Wed Sep 08, 2010 7:01 pm

Imho, a 292 cam need's right at 11 to 1 CR to run like it really should!

At 10 to 1 CR., drop in anyone of many 268/270/272/and even a 274 cam and go!

Like these.......

CC 268HE;
Isky 270 Mega;
Crane 272/272; and
CC 274XE.......

These cam's will be POWERFUL in a right at 10 to 1 CR. engine, imho!!

And I will say that if you over-cam and drop the cam's needed CR., you are leaving Hp on the table!

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Re: 292 comp hyd cam sbc

Postby Keith Morganstein » Wed Sep 08, 2010 7:40 pm

The 292 and other magnum cams are old school (80's) grinds they keep in the catalog because people still buy them. The XE series while not cutting edge, are a whole lot better.
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Re: 292 comp hyd cam sbc

Postby pdq67 » Wed Sep 08, 2010 8:54 pm

Right you are, but the old cam's like the 292 CC Hi-Po- jobber SOB's can still haul the mail IF installed in the right "OLD-SCHOOL" engine combination!

And don't even get me started on the LS- engines b/c GM could have put their heads on the old '67, L-48, 350 blocks fine IF GM would have wanted to as did Bill M. did for his after market block.

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Re: 292 comp hyd cam sbc

Postby jeff swisher » Wed Sep 08, 2010 9:19 pm

Right ,,the XE line will perform well with lower compression but the smaller overlap just dont seem to rev as well
That could be good if you aint going to twist it way up...of course if you make more average tq then you could
shift earlier and possibly make out

I agree that 11 to 1 would be excellent, if not more , I have ran the 270h at 11.27 compression in a 350 and if you arent
good at keeping one in tune ,then something like that wont live long...That one had 245 psi of cranking pressure.
DO NOT let your friends drive one like that!

I always shoot for 200 psi for a good daily driver in my personal cars..I currently have the 268h with 10.2 compression if not a hair more...210 psi on the last check
I believe on the last check of the 292h the psi was 185...it would probably take 11 or better to get 200
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Re: 292 comp hyd cam sbc

Postby econo racer » Thu Sep 09, 2010 7:57 pm

I actually have a new 284 extreme I saved for another project. I can use it. The pistons I have are keith black flat tops with 2 flycuts on top-that with the 64 cc's vortecs might be more than the 10-1 comp I was thinking.
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Re: 292 comp hyd cam sbc

Postby Dodge Freak » Thu Sep 09, 2010 8:33 pm

What about the solid 292/305 cams Comp still makes, would that be a better choice?

Old School is cool 8)
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Re: 292 comp hyd cam sbc

Postby F-BIRD'88 » Thu Sep 09, 2010 8:59 pm

Flat tops a 64cc heads will result in a lot more than 10:1 on a 400. (if the block is "0 Decked" the cr will be 11.3:1)

The cr will be too high for pump gas. Get a KB dished piston with a -18 to-22cc dish volume for a 400 with 64cc heads and pump gas.
KB147 and KB168 respectively (for 5.7" rod). Use the flat tops in something else.

The XE284H-10 cam will work just fine. Do it right and you will only need to do it once.

If you want to build a pump gas 400 with flat tops. use a 70-72-75cc head.

Why are you asking about the 292H cam when you have a XE284H sitting there?
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Re: 292 comp hyd cam sbc

Postby CGT » Thu Sep 09, 2010 9:06 pm

I have seen the 292 magnum run some impressive times years ago, I have also seen it not run worth a crap in others. A 10:1 406 with vortec heads and a 3500 stall and that cam would have to run pretty well. The 294s magnum is the solid equivalent and did seem to run better. I think the 292 would work well at 10:1 in a 406 installed at the recommended 106 IC, but as mentioned previously, there's better stuff out there for sure. But that's always the case no matter what you got. I just saw that you have flat tops. You definitely don't have 10:1.
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Re: 292 comp hyd cam sbc

Postby Boz-Race Engines » Thu Sep 09, 2010 9:16 pm

F-BIRD'88 wrote:Flat tops a 64cc heads will result in a lot more than 10:1 on a 400. (if the block is "0 Decked" the cr will be 11.3:1)

The cr will be too high for pump gas. Get a KB dished piston with a -18 to-22cc dish volume for a 400 with 64cc heads and pump gas.
KB147 and KB168 respectively (for 5.7" rod). Use the flat tops in something else.

The XE284H-10 cam will work just fine. Do it right and you will only need to do it once.

If you want to build a pump gas 400 with flat tops. use a 70-72-75cc head.

Why are you asking about the 292H cam when you have a XE284H sitting there?


i dont believe the comp will be too high at 11.3.1 with the 292 cam for pump gas at all, the effective comp is still in the safe zone, im amazed how many people are scared of putting comp into a street engine. its all about setting things up right :)
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Re: 292 comp hyd cam sbc

Postby Bob Hollinshead » Thu Sep 09, 2010 9:50 pm

I put a 292 magnum in a dished piston +030 400 years ago with 462 double hump heads, 750 3310 carb on a dual plane intake and it ran really well. In a 67 Camaro with Muncie and 3.73 gears it made enough torque to pull out in third gear. My Brother-in-law runs the 292 in an old RHS +060 350 flattop engine, oldschool Weiand single plane intake 7546?, 750 double pumper, 186 ported heads, 1.6 rockers- he shifts at 7K in his 4.10 geared 67 chevy II and it has lived almost 20 years now!
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Re: 292 comp hyd cam sbc

Postby pdq67 » Fri Sep 10, 2010 4:20 pm

I have a Melling 292/230, 109/107, .480" lift hy-cam in my right at 9.5 to 1 CR'd 406 that has big dished TRW forged pistons and double-hump heads and .039" thick composite headgaskets and with my M-20, 3.31 posi and 26.5" tall old school L-60's, it's a dog untill she hits above 2500 rpm. (It's got a balanced PAW Master Kit in it)...

But once up on the pipe, she run's like a scalded dog!! only has like 13,000 miles on it

Engine is pulled so my 496 could take it's place and it is on my engine stand completely together if I want to put it in something.

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