Timmy's Toy
Well-Known Member
For anyone that has used the Mopar .590 cam in a small block. Did you install it straight up, advanced or retarded? I have heard that this cam works well with a 6 degree retard.
590 cam installation tips
- Thread starter Timmy's Toy
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Totally dependent on the rest of the combination.
Wyrmrider
Well-Known Member
6 degree retard- sounds like a description of me
first determine if the cam is ground on the timing marks- many are not to fit a big lobe on available cores- do you own this cam?
if you have it installed already post up your times if you have them and cranking compression- the retard and post again
bvvc on piston to valve clearance (and retainer to guide)
second I've retarded that much with low low gears and high rpm strip only build
also you should have max compression as your dynamic compression will take a hit
especially with a wider LCA
I wrote this before RRR posted- but he is so correct- post up the rest of the combo and head flows if you have them
That's a lot of lift for iron rockers BTW
we ran tall valves/ springs and relocated shafts
i would not run roller rockers (or Iron) without talking with B3
first determine if the cam is ground on the timing marks- many are not to fit a big lobe on available cores- do you own this cam?
if you have it installed already post up your times if you have them and cranking compression- the retard and post again
bvvc on piston to valve clearance (and retainer to guide)
second I've retarded that much with low low gears and high rpm strip only build
also you should have max compression as your dynamic compression will take a hit
especially with a wider LCA
I wrote this before RRR posted- but he is so correct- post up the rest of the combo and head flows if you have them
That's a lot of lift for iron rockers BTW
we ran tall valves/ springs and relocated shafts
i would not run roller rockers (or Iron) without talking with B3
I’d love to hear your combo in addition to the OP’s combo. And how did you like it? I happen to have one on the shelf.
twayne24365
Well-Known Member
A lot of people have had some fast stuff with that cam, idk about retarding it but every Mopar cam I’ve used got installed 2-4 degrees advanced and I’ve been happy with them
Timmy's Toy
Well-Known Member
So for all here is my current combo. .030 over 360. W2 (long valve) small chamber (57cc) mildly ported heads with Crane W2 roller rocker setup. Mopar 557 cam at present, straight up. Had pushrods custom made for length to determine proper rocker and tip geometry. Will do so for the 590 cam as well. Cranking compression is 220lbs. 750 Holley with Indy single plane manifold (yes the oval port Indy is the same as the W2). Hedman 1-7/8 primary x 3-1/2 collector chassis race headers. 4.57 gears with 30x9" tires. Best of a 10.83 @ 120 in Phoenix (mid 80's spring weather). I am taking out the motor for a refresh and wanted to try the 590 cam. Yes I have one already. I'm also going through the trans and adding a transbrake to my 727. Yes, I've been foot braking all this time. I also will be adding an 850 Holley to the mix.
So with all this said; anyone have anything else to add? Appreciate it!
Timmy's Toy
Well-Known Member
Oh yeah, car weighs 3,180 with me in it. I also always degree any cam I put in for accuracy.
MOPAROFFICIAL
Oogliboogli
Yep, i was gonna say 4 or even 6 depending on what you're doing and with.
After the .028/.032 lash and push rod angle...that ain't **** for iron rockers...probably net .550 lift
Advanced?
MOPAROFFICIAL
Oogliboogli
Yep. And if you read who I "quoted" and was responding to, you would know that already.lol good morning.
Thphhhhh, yes, it is the (urg!) morning.
I’m also having fun (sarcasm major) with my latest screw up.
Whoooops! A slip and fall to the concrete.
Trying to get the spiral lock out.
Think I’ll get breakfast instead....
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Man that sucks! sorry to here another delay, it's always something
Wyrmrider
Well-Known Member
Had pushrods custom made for length to determine proper rocker and tip geometry.
will not by itself get correct geometry with roller tip rockers
contact B3 and see or do the mid lift procedure yourself
if your motor is not already down for refresh you could retard current cam to same intake close point as the 590 and see how you like it
advance/retard depends on your whole combination as was said by RRR
you have to try
in general super high compression retard (with your gears retard may work, IDK)
lower compression advance then test
on that piston put the broken side on the non thrust side, clean it up and run it
many pistons have much less skirt than what you have left
will not by itself get correct geometry with roller tip rockers
contact B3 and see or do the mid lift procedure yourself
if your motor is not already down for refresh you could retard current cam to same intake close point as the 590 and see how you like it
advance/retard depends on your whole combination as was said by RRR
you have to try
in general super high compression retard (with your gears retard may work, IDK)
lower compression advance then test
on that piston put the broken side on the non thrust side, clean it up and run it
many pistons have much less skirt than what you have left
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71 Duster 360 .030 Eddy CnC heads from MCH..Ross flat top pistons..10.4 to 1 compression..Scat I beams...stock crank...Crane 1.6 rockers...MP 590 cam installed at 102 degrees...hooker 1 3/4 headers..Msd 6al ...MP electronic race distributor...QFT 950 running on E85...904 trans with TA 4400 series converter...5200 stall...Transzact transbrake...4.56 gears......
Car weights 2975 with driver...
Car ran a best of 10.64 with MP 590....Car ran a best of 10.65 with Hughes 6064 cam...
MOPAROFFICIAL
Oogliboogli
That sucks, call'em for a single, weigh old one with piece inside and match the weight with a lil grinding around the pin boss.
Oh, just get an angle grinder and grind it down straight. It'll run. LOL
yellow rose
Overnight Sensation
Pushrod length does not affect rocker geometry. You need to call Mike at B3 racing engines and talk to him. Don't order pushrods until you do. Hope I'm not too late.
yellow rose
Overnight Sensation
Timmy's Toy
Well-Known Member
It's been a long time since I first posted my question. Well... I've finally installed the cam in the engine and taken it to the track. It was installed straight up. Ran a 10.95 in a head wind letting off the throttle in Phoenix. I haven't been able to race since due to the COVID-19 restrictions. The cam has a serious lope to it. Doesn't like anything below 3500 rpm, which is no problem since it's a drag race only vehicle. Leave on the trans-brake two step at 3800 rpm. Go through the traps at 7000 rpm. At this point I'm satisfied. I'll know more as I'm able to tune the car. I'm predicting high 10.80's. Which at 3180 lbs in the desert in a 360 isn't bad.
I reviewed the threads on this post and I've got a couple of comments. Several comments made about iron rockers. I don't have iron rockers. As stated I have W2 heads, (not the econo), that need a stand mount rocker system. At present I use Crane Aluminum 1.5 rockers and Mopar Performance shafts and stands. Crane and Mopar Performance are no longer are available, so when this gives out I'll need to go to T&D or Harland sharp for rockers and shafts.
Thanks again for all the comments. I'll post more runs about this combo in the 10 second drag race forum when we get back to the track.
I reviewed the threads on this post and I've got a couple of comments. Several comments made about iron rockers. I don't have iron rockers. As stated I have W2 heads, (not the econo), that need a stand mount rocker system. At present I use Crane Aluminum 1.5 rockers and Mopar Performance shafts and stands. Crane and Mopar Performance are no longer are available, so when this gives out I'll need to go to T&D or Harland sharp for rockers and shafts.
I disagree with Yellow Rose's statement. Pushrod length indeed does effect the geometry of the valve train. Too short or too long can affect how the rocker contacts the valve tip. Also affects whether you're getting the full cam-lift. There are other factors such as stand height and installed valve height that affect geometry as well, but pushrod length is part of it. The pushrods I had made for the 557 cam measure up excellent for the 590 cam and are being used.
Thanks again for all the comments. I'll post more runs about this combo in the 10 second drag race forum when we get back to the track.
yellow rose
Overnight Sensation
The only affect pushrod length has on rocker geometry on any shaft mounted system is the angle at which the adjuster meets the pushrod.
With most rockers, you lose ratio if the pushrod is too short because the adjuster is moving away from the shaft.
Other than that little affect on ratio, pushrod length doesn’t affect geometry. It’s not a stud mounted system.
Edit: BTW I’m glad it’s up and running and it sounds like you have it running well.
Installed a MP590 in a 360 .070 over ....using Speedmaster Heads ported by IMM in indio, mp590 cam 4 degrees advanced ...crane roller lifters Intake 1.6 and exhaust 1.5 with Eddy Victor 340.....
KB 741 pistons with Scat I beam rods...35 yr old Turbo Action Converter 3800 series ...2.74 1st gear in 904 with 4.30 Dana 60. TTi 1 7/8 headers...
Fresh engine in March of 2020....Best of 10.55 @ 124+ Running in Las Vegas....so far.
Good old MP590 cam...with Good Old 360...been using that block for 15 yrs now ..on and off..
KB 741 pistons with Scat I beam rods...35 yr old Turbo Action Converter 3800 series ...2.74 1st gear in 904 with 4.30 Dana 60. TTi 1 7/8 headers...
Fresh engine in March of 2020....Best of 10.55 @ 124+ Running in Las Vegas....so far.
Good old MP590 cam...with Good Old 360...been using that block for 15 yrs now ..on and off..
Wyrmrider
Well-Known Member
good to hear
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