Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2266087
03/09/17 10:22 AM
03/09/17 10:22 AM
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Joined: Jan 2003
Posts: 3,921 Richmond, Indiana
19swinger70
master
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master
Joined: Jan 2003
Posts: 3,921
Richmond, Indiana
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I have had that cam in my 340 for 15 years. It is a nasty grind, but my combo works well. I have a PTC converter that flashes / stalls around 3500-3800, and a reverse manual valve body. My compression is very close to 10:1 with iron heads. I have 4.10s in the rear.
I'm turning 4,000 rpm on the highway at 70mph, but it still makes me smile!
1970 340 swinger. sublime 1967 barracuda fastback BB 55 Plymouth Project
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2266551
03/10/17 01:38 AM
03/10/17 01:38 AM
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Joined: Jan 2003
Posts: 10,558 Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,558
Freeport IL USA
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Years ago, I had one in a low comp small block backed to a 4 speed and 3:23 gears. The 4 speed was its saving grace. I had a lot of fun with that car, and wasn't really worried about it being the fastest it could have been, it was plenty fast on the street. It also sounded awesome!
A buddy had that cam in an auto car, and the converter gave him fits, there wasn't enough compression or gearing to make it work, he was pretty miserable with that cam.
I believe that cam needs compression, a high stall converter, and gearing to work, or a 4 speed with a driver having enough ability to cover the weak points. If I had one laying around, I'd stuff it in a motor with a stick behind it. Gene
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2266608
03/10/17 03:38 AM
03/10/17 03:38 AM
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Joined: Jan 2004
Posts: 8,251 fredericksburg,va
cudaman1969
master
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master
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Posts: 8,251
fredericksburg,va
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Had the 509 in a 383 hc in a Duster, 4.88, 29.5 slick, stock street Hemi vert, would run 11.68 -117, 7.38 in the eight, idled nice (600) after working the 780 holly and collector length. Put the engine in a 68 Dart (good vert and 14-32s) went 7.05. I thought the cam worked nice.
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: poorboy]
#2266712
03/10/17 12:31 PM
03/10/17 12:31 PM
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Joined: Oct 2003
Posts: 11,684 W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,684
W. Kentucky
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I ran the big block version in a 67 440, headers, single plane intake, 850DP, 3500 TCI converter and 3.91 gears. I didn't like it, the same engine with a General Kinetics 280/480 was a hoot to drive. If a guy could find the right combination of parts it may rune fine, but I never knew anyone that found the right combo. If it were me I'd sell to a purple cam follower and buy a more modern grind .
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: killermopar]
#2267471
03/11/17 04:04 PM
03/11/17 04:04 PM
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Joined: Jan 2003
Posts: 2,155 Tucson, Arizona
clonestocker
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,155
Tucson, Arizona
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EV2, We have one in my sons car now. Was my race motor. KB107's,2.02 intake valve w/bowl porting, 273 rockers and 750 DP. 11.49@117 in a Duster. Runs 12.50's all day in front of a TKO600 in a 67 Dart. My always worked well.
[img] [/img]
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2274262
03/22/17 03:21 PM
03/22/17 03:21 PM
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Joined: Jun 2014
Posts: 5,183
Porter67
OP
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OP
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Joined: Jun 2014
Posts: 5,183
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Great replies, and exactly what im looking for.
This is a real mid/late 70-s day 2 build, positive deck height and a dome at 805 grams with piston and pin so im not trying to spin things to the moon.
But the car is 3200, 4:56/5k ptc vert on a 28 drag radial.
So I hope to get the best out of it as I can.
And since its a old school deal with 4 inch side pipes, im wanting the stank azz bad manners that only wot can cure.
This is more fun for me then a cookie cutter 600 plus stroker build. And I consider it a REAL street car build, just not friendly.
Last edited by EV2Bird; 03/22/17 03:22 PM.
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2274307
03/22/17 04:21 PM
03/22/17 04:21 PM
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Joined: Feb 2003
Posts: 7,982 Scranton, PA
Montclaire
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master
Joined: Feb 2003
Posts: 7,982
Scranton, PA
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Great replies, and exactly what im looking for.
This is a real mid/late 70-s day 2 build, positive deck height and a dome at 805 grams with piston and pin so im not trying to spin things to the moon.
But the car is 3200, 4:56/5k ptc vert on a 28 drag radial.
So I hope to get the best out of it as I can.
And since its a old school deal with 4 inch side pipes, im wanting the stank azz bad manners that only wot can cure.
This is more fun for me then a cookie cutter 600 plus stroker build. And I consider it a REAL street car build, just not friendly. Yeah, you'll be happy with it then. They sound awesome at idle. Make sure you degree it in for your chassis weight. Not much in the top end with these so you may actually want to run a big aluminum dual plane.
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Re: Mopar .508 292 Bad Cam or Bad Rap?
[Re: Porter67]
#2275812
03/25/17 07:27 AM
03/25/17 07:27 AM
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Joined: Jun 2014
Posts: 5,183
Porter67
OP
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OP
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Joined: Jun 2014
Posts: 5,183
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If I were gonna run a roller, ive a 70-s cast roller cam and lifters, a nice reed unit where the lobes look more like one of todays solid lifter cams.
The shop does a block wash off, ive washed it good one time, spent several hours getting things in order and am about ready for the final wash and them cam bearings, ect.
The pistons I have are an odd set, all 10, remember when sets came in 10 and that was normal?
Max 360 CH iirc is like 1.687 and my pistons are 1.777 and so the quench pad before the dome is about .070 above deck. But with the chamber and wide selection of gaskets it will work out.
Id liked to of cleaned up the decks but dont even want to take .005 off because for the oem finish its really decent and I bought this block new and its in decent shape.
I ran into a really nice set of J castings and if needed will opent he chamber diameter and if I need few more cc-s I will polish the chambers, but might do it anyways.
Prior to getting started I did moch alot up and it is all doable and I think I can get a actual workable quench number on the pad itself.
In the end I dont care what fuel I run and another factor is in at 4k feet above sea level.
Another positive is ive a nice set of not moly rings but the better steel chromium nitrated top ring in the 1/16 size although its tempting to ditch the cast second ring and run a std. moly ring there.
But im trying to pull from my parts on hand.
Its so tempting to go with a small solid cam but until I know my true piston to valve specs im ok with this cam.
If this was 1975, this would actually be a very nice build with the venolia pistons and light rods and head work. Only bettered by a W2 build but very few had the W2 in 75 since they didnt semi mass produce them till 76.
Last edited by EV2Bird; 03/25/17 07:30 AM.
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