292/508 question

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rigger3006

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just picked up a NOS 292/508 cam and lifters kit, still in direct connection box with dc break in lube.appears to be from 1980, would anyone recollect who was grinding cams for mopar back then?thanks
 
just picked up a NOS 292/508 cam and lifters kit, still in direct connection box with dc break in lube.appears to be from 1980, would anyone recollect who was grinding cams for mopar back then?thanks

What are the numbers for the cam? They made about three different versions of that size.
 
Kimmer ...
Make sure u have at least 165 cranking compression or ur motor will be dead off the line or u could advance it 6-8 degrees to help it out. Kim
Great advice... Hopefully the O.P. understanding and /or asks more questions...
 
im yanking out the 284/484 and using this one, p4120233, 76 deg overlap,108 cl.3000 stall and 391s with 295s out back, may advance 4 deg, not too worried about a dog out of the hole
 
If you don't have a true 10.5:1, advance it more as long as you have clearance....

I install those in stock 340's at 100-101 range.

I think you'll be disappointed. I've swapped those for people, going from a 284 to the 292. The 284 outperformed or was equal to a 292 except for about the last 500 of RPM range.
 
If you don't have a true 10.5:1, advance it more as long as you have clearance....

I install those in stock 340's at 100-101 range.

I think you'll be disappointed. I've swapped those for people, going from a 284 to the 292. The 284 outperformed or was equal to a 292 except for about the last 500 of RPM range.
Listen to C.B.... He knows his sh"t ... Had a few conversations with him.....
 
im yanking out the 284/484 and using this one, p4120233, 76 deg overlap,108 cl.3000 stall and 391s with 295s out back, may advance 4 deg, not too worried about a dog out of the hole


Mine is #200988. It is going back in the .060 340 block it came from. The motor uses TRW forged 10.5 pistons. It had J heads with 2.06/1.60 that were cracked on every cylinder when I got it.
I now have a pair of Aero heads 308s with 2.02/1.60 to put on it along with the Holley strip dominator and 3310.
8in converter, 727 reverse manual with my 4.88 street gears.
Just need to get my block mods done an then back together.

But life comes first.
 
im yanking out the 284/484 and using this one, p4120233, 76 deg overlap,108 cl.3000 stall and 391s with 295s out back, may advance 4 deg, not too worried about a dog out of the hole
Look at it this way, would you want it to be a dog out of the hole?
 
Make sure which version you have. There were two. One ground on a 108 and one on a 112.
 
I put that 292/508/108 in my 11.3 aluminum headed 367 with a clutch, and CB nailed it, in post7; great power from early-5000s to mid-6000s, but very disappointing in a DD,lol. I advanced it 2additional times,and by midsummer I had had enough. She was outta there. Just not enough torque on the bottom.With 3.55s, the power didn't start until 47mph,lol.
I think I was at over 185 psi with that one,after the final retime.
 
thanks for all the advice guys, all i really wanted to know was if anybody could recall who was grinding cams for mopar in 1980
 
thanks for all the advice guys, all i really wanted to know was if anybody could recall who was grinding cams for mopar in 1980


General kinetics cam Dynamics and racer Brown are a few of them that were grinding them in the 70s and 80s.
 
Make sure which version you have. There were two. One ground on a 108 and one on a 112.
He said it was in a DC box, ....AFAIK that predates the wide lobe separation version,.........and listed the "233" P part#w/76 deg OL, so ...................unless there was a
switcheroo............
 
im yanking out the 284/484 and using this one, p4120233, 76 deg overlap,108 cl.3000 stall and 391s with 295s out back, may advance 4 deg, not too worried about a dog out of the hole
Expect ~9-9.5"Hg of vacuum, and You'd better plan on a 9.5" torque converter if You don't have the above squeeze or advanced as recommended, unless You're running
a stroker........................
 
He said it was in a DC box, ....AFAIK that predates the wide lobe separation version,.........and listed the "233" P part#w/76 deg OL, so ...................unless there was a
switcheroo............

My blind old *** missed all that somehow.
 
20180207_145428.jpg
 
@Bighead440 Maybe he can shed some light on which company was grinding the MP cams int he 80s.

Herb McCandless said that Direct Connection/MoPar Performance had them ground at a production OEM cam grinder(s) in the midwest, great quality control and cost effective, but no glam. If you'll notice, many of the Purple Shafts mimic the specs of the Racer Brown cams that MoPar used to offer via Direct Connection before they "made" cams.....
 
Hey rigger let us know how it runs after cam install. If it runs any better? Where did you wnd up setting cam @? 4 degrees @ crank or cam? Think crackedback recommends 6 to 8 crank degrees. Or 3 to 4 @ cam for better output!!:steering:
 
will let u know when i get it done,right now its minus 20 here and garage is not heated.have to put 391s in first to get a feeling for how it runs. also picked up a strip dominator for it, i have a guy building a carter super tq for that intake, so ive got lots of wrenching ahead of me this spring. crank or cam,hmmmm, not sure which way to go there!
 
I am pulling out a 280/474 mopar cam to put in a 292 cam like your set up. Except mine is a 360. X heads and kb107 pistons. Also will be going to 3.91's from 3.55's. Already have a FTI converter with 3400-3600 stall. It's a 9.5 diameter.
 
If you don't have a true 10.5:1, advance it more as long as you have clearance....

I install those in stock 340's at 100-101 range.

I think you'll be disappointed. I've swapped those for people, going from a 284 to the 292. The 284 outperformed or was equal to a 292 except for about the last 500 of RPM range.

^^^^^...Exactly what we found with my old '71 340 cuda, we changed the cam overnight (was eager then!) at the race track from the 484 to 509, put the 484 back in it, ran no better and that was with CR, 3500 stall, 750DP/hdrs etc........the .590 solid that went into it later woke it up!!!
 
I will probably may feel a difference. We'll see. I plan to advance cam as crackedback advised. And throw as much initial timing as it will take with full timing around 34 or 35.
 
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