The Forward Look Network
The Forward Look Network
Search | Statistics | User Listing Forums | Chat | eBay | Calendars | Albums | Skins | Language
You are logged in as a guest. ( logon | register )

howards cam
Jump to page : 1
Now viewing page 1 [50 messages per page]
View previous thread :: View next thread
   Forward Look Technical Discussions -> The Exhaust Pipe - Modification & PerformanceMessage format
 
60 dart
Posted 2018-06-07 5:09 PM (#564743)
Subject: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
lookin for some thoughts here ,,,, please --------------------------------------------------------later


https://www.ebay.com/itm/112124430669?ul_noapp=true
Top of the page Bottom of the page
1960fury
Posted 2018-06-07 5:48 PM (#564751 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 5324
5000100100100
Location: northern germany
For me? Way too wild. Depends on what YOU're looking for.
Top of the page Bottom of the page
59 in Calif
Posted 2018-06-07 7:03 PM (#564758 - in reply to #564743)
Subject: Re: howards cam


Elite Veteran

Posts: 1038
100025
Location: Hayward, Calif
Hey Chuck, Haven't heard from you in awhile. Hope all is well. I don't know anything about Howard Cams, good or bad. I used an Edlebrock cam from summit when I built up LA360 for wife's 59 dodge. It's just a cruiser, no high speed racing involved. So it works good in this application. They do have an assortment of different 'lift and overlap' cams available. Jerry
Top of the page Bottom of the page
wayfarer
Posted 2018-06-08 9:37 AM (#564797 - in reply to #564743)
Subject: Re: howards cam



Elite Veteran

Posts: 736
50010010025
Location: Central Ory-Gun
What is the plan?
Top of the page Bottom of the page
60 dart
Posted 2018-06-08 5:45 PM (#564836 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
nothing big , just a good sounding street ripper . when i opened my 383 magnum clone top end ( not all the way yet ) i found 1 collapsed lifter and stopped til i get all top end and cam parts and pieces . it has
@ 5000 miles on a rebuild by previous owner , so said to be . my thinking is that a cam with 500 or less lift will work well for my wants , along with the cam matching parts , which is why i'm looking at the cam
above . if i remember correctly a 69 383 magnum has a lift of @ 450 , 268-283 duration

jerry , i'm doing ok not perfect but ok . a while back i had to have some new heart plumbing since my open heart , 6 way bypass was almost exactly 10 yrs old .
now i have a pacemaker-defib and a new stent
Top of the page Bottom of the page
wayfarer
Posted 2018-06-09 9:40 AM (#564874 - in reply to #564743)
Subject: Re: howards cam



Elite Veteran

Posts: 736
50010010025
Location: Central Ory-Gun
That cam in a 383 should be plenty. Hopefully this a 4-spd car.
Top of the page Bottom of the page
57chizler
Posted 2018-06-09 12:09 PM (#564880 - in reply to #564836)
Subject: Re: howards cam



Expert

Posts: 2940
200050010010010010025
Location: NorCal
60 dart - 2018-06-08 2:45 PM
if i remember correctly a 69 383 magnum has a lift of @ 450 , 268-283 duration


The original Magnum cam has 115° lobe centers, the Howards has 112° lobe centers which will produce a choppier idle and less off-idle drivability than the Magnum.
Top of the page Bottom of the page
60 dart
Posted 2018-06-09 5:50 PM (#564903 - in reply to #564874)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
wayfarer - 2018-06-09 9:40 AM

That cam in a 383 should be plenty. Hopefully this a 4-spd car.




yes , 833
Top of the page Bottom of the page
LostDeere59
Posted 2018-06-14 3:07 PM (#565149 - in reply to #564743)
Subject: RE: howards cam



Extreme Veteran

Posts: 303
100100100
Location: Hilltown, PA

Have you looked at/talked to Hughes Engines?

Mopar only guys with a pretty impressive website and reputation.

http://www.hughesengines.com/Index/index.php



Gregg
Top of the page Bottom of the page
60 dart
Posted 2018-06-14 8:41 PM (#565162 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thanks , but no hilltown i haven't . as of now i'm gone forward with the howards . the biggest reason is cost and matching parts . so its a win , lose or draw situation from here . from what i know and things
forgotten but i've read up on , it should be ok for my wants ,,, thanks everyone ---------------------------------------------------------------later
Top of the page Bottom of the page
wayfarer
Posted 2018-06-15 9:10 AM (#565171 - in reply to #565162)
Subject: Re: howards cam



Elite Veteran

Posts: 736
50010010025
Location: Central Ory-Gun
Keep us posted on the first drive.
Top of the page Bottom of the page
60 dart
Posted 2018-06-23 12:40 AM (#565483 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
opened up the left bank today . 6 of 8 lifters i could compress by hand and push rod 1/8 to 1/4 of an inch very easily . never seen that one before . kind of odd swirl on tops of pistons , like a Loch ness monster
look , maybe ying/yang . cylinders still have swirls from honing . real clean inside . valve seals need replaced with an upgrade--------------------------------------------------later
Top of the page Bottom of the page
CrAzYMoPaRGuY
Posted 2018-06-23 12:36 PM (#565503 - in reply to #564743)
Subject: Re: howards cam


Member

Posts: 24

Location: Locked in my Canadian garage....
That cam in a 440 would be verrrrry streetable. 112 LSA with 225/235 at 050 is fine. It will be a choppier cam in a 383 though. Howards Cams are good quality cams, we have used many
Make sure you have decent static compression IMO!! Measure how far down in the hole it is!!!

Edited by CrAzYMoPaRGuY 2018-06-23 12:37 PM
Top of the page Bottom of the page
60 dart
Posted 2018-06-23 3:08 PM (#565509 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thanks crazy . now , would anyone use used push rods/from same motor . i always have with no problems but not with a setup like this . i have a set of lightweight hardened speed pro --------------------------------- later
Top of the page Bottom of the page
60 dart
Posted 2018-06-24 4:49 AM (#565527 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
i don't know how but i'm coming up with piston to deck clearance of @ .080 . thats crazy deep for a motor that is supposed to be 10:1 compression------------------------------------------------------------later
Top of the page Bottom of the page
Powerflite
Posted 2018-06-24 9:41 AM (#565531 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
What is the head cc? I can calculate the compression if you can tell me. I would assume you are using a head gasket .04" thick once compressed. As far as using used pushrods, as long as the ends are all still tight, with no mushrooming at the connection, you should be OK.
Top of the page Bottom of the page
57chizler
Posted 2018-06-24 1:56 PM (#565541 - in reply to #565531)
Subject: Re: howards cam



Expert

Posts: 2940
200050010010010010025
Location: NorCal
If you don't have a way to measure the chamber volumes, the head casting number will give a clue to the volume. Of course, the original volume will be reduced if there has been any surfacing of the heads; to check for any surfacing, measure the outer deck, it was exactly one inch thick when new.
Top of the page Bottom of the page
60 dart
Posted 2018-06-24 6:56 PM (#565544 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thanks , the heads are 516's with 1.74 upgraded exhaust valve . the head gasket will be a steel .020 before install . the heads have been cleaned up on the mating surface but don't look much
different "by eye" than stock oem heads right next to them , again thanks guys . i need all the help i can get!-----------------------------------------later
Top of the page Bottom of the page
Powerflite
Posted 2018-06-25 2:21 AM (#565565 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
Assuming a stock bore & stroke on a 383, 88cc combustion chamber volume, .02" gasket thickness, and .08" deep deck height; I calculate a compression of 8.0:1 compression ratio. That's a smog motor for sure.
Top of the page Bottom of the page
60 dart
Posted 2018-06-25 3:49 AM (#565566 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
so what should i expect with motor performance as a street motor , given aspects that have been gone over --------------------------------------------------later
Top of the page Bottom of the page
Powerflite
Posted 2018-06-25 9:20 AM (#565579 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
High compression makes a wild cam feel less wild. Low compression with a wild cam will have very low vacuum at idle, you will have to increase the idle speed to keep it running, and it won't make much power until you get the rpm's higher, i.e. little low end torque. This is speaking generally, not in reference to the specific cam you have chosen.
Top of the page Bottom of the page
wayfarer
Posted 2018-06-25 9:34 AM (#565581 - in reply to #564743)
Subject: Re: howards cam



Elite Veteran

Posts: 736
50010010025
Location: Central Ory-Gun
Agree with Powerflite, big cams and low compression are real lazy at low rpm. In a moderalely heavy car it will not be a fun drive.
Top of the page Bottom of the page
57chizler
Posted 2018-06-25 4:03 PM (#565595 - in reply to #565544)
Subject: Re: howards cam



Expert

Posts: 2940
200050010010010010025
Location: NorCal
60 dart - 2018-06-24 3:56 PM

thanks , the heads are 516's with 1.74 upgraded exhaust valve .


The 516's have an advertised chamber volume of 73.5 CC's but will usually measure around 78 CC's so that brings your estimated CR closer to 9.5-1.
Top of the page Bottom of the page
Powerflite
Posted 2018-06-26 10:22 AM (#565640 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
73.5 cc gives 9.11:1
78.0 cc gives 8.75:1
Top of the page Bottom of the page
57chizler
Posted 2018-06-26 11:41 AM (#565641 - in reply to #565640)
Subject: Re: howards cam



Expert

Posts: 2940
200050010010010010025
Location: NorCal
Yeah, my bad, I was using the RB stroke in my calculations. DOH!!

Edited by 57chizler 2018-06-26 11:44 AM
Top of the page Bottom of the page
Powerflite
Posted 2018-06-26 1:45 PM (#565651 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
That's a convenient calculator. I figured out the formula: CompRatio= 1 + Swept volume/(combustion chamber volume + deck volume + gasket volume - piston dome volume)
I came up with a spreadsheet to calculate it when i had to figure out the compression on my weird 392 project.
Looks like summit and I get the same number so that's reassuring that someone at summit knows what they are doing.
Top of the page Bottom of the page
60 dart
Posted 2018-06-27 12:36 PM (#565707 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
single or dual plane oem intake? ------------------------------------------------------------later
Top of the page Bottom of the page
60 dart
Posted 2018-06-27 6:51 PM (#565724 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
and whats the best economical way to get the compression ratio up . i got all these remedies runnin through my head , none of which i really like --------------------------later
Top of the page Bottom of the page
60 dart
Posted 2018-06-27 7:15 PM (#565725 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
and again the actual piston depth is .095 . checked again the piston stop @ tdc . heads off , feeler gauge stacked -------------------------------------------later
Top of the page Bottom of the page
60 dart
Posted 2018-06-27 7:16 PM (#565726 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
yes , it keeps gettin worse ------------------------------------------later
Top of the page Bottom of the page
Powerflite
Posted 2018-06-27 7:28 PM (#565727 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
If it were me, I would tear it apart and replace the pistons & bearings. You wouldn't have to do the main bearings, but I would while you are there. Not hard to do yourself. If you keep the rings in order, you can reuse them if you wish. That way you don't have to re-surface the bores.
Top of the page Bottom of the page
60 dart
Posted 2018-06-28 12:20 AM (#565741 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thanks socal , thats what i just came up with myself . the numbers off the top of the pistons are 366NP motorhome pistons (silvolite), compression height of 1.848 i
m needin @ 1.935 . i'm shootin for new pistons , rings and bearings . takin out the motor will be a chore for me . you guys are the best , thanks ---------------------------------------------later

Edited by 60 dart 2018-06-28 12:22 AM
Top of the page Bottom of the page
60 dart
Posted 2018-06-29 3:53 PM (#565801 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
the best i'm goin to do is probably 1.920 piston comp. height . that should be 23 below deck correct ? which should bring the compression ratio to @ 9.5 or higher
depending on which head gasket i use , .040 or .020 . not real easy trying to find a reasonable machine shop here . all the napa ones have closed but i found one
up river ( bout 20mi. ) , to press the pistons onto rods @ 10$ a hit , which i think is more than fair . he's one of the ex-napa machinists that now has his own
motor performance shop including a dyno , which is extremely rare in this part of the tri state area . -----------------------------------------------later
Top of the page Bottom of the page
Powerflite
Posted 2018-06-29 4:29 PM (#565802 - in reply to #564743)
Subject: Re: howards cam



Expert

Posts: 4453
200020001001001001002525
Location: So. California
If your .095" measurement is correct, then yes, this one should give you .023" in the hole. That equates to a 9.9:1 compression with a .02" gasket & 78cc combustion chamber. Goes down to 9.5:1 with a .04" gasket.
Top of the page Bottom of the page
60 dart
Posted 2018-06-29 11:33 PM (#565819 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thanks socal ----------------------------------------------------later
Top of the page Bottom of the page
60 dart
Posted 2018-07-01 3:47 PM (#565859 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
is 10.0:1 CPR too much for pump gas and should i stick with 0.020 head gasket or the 0.040 @ 9.5:1 cpr ------------------------------------------------------later
Top of the page Bottom of the page
wayfarer
Posted 2018-07-02 9:32 AM (#565880 - in reply to #564743)
Subject: Re: howards cam



Elite Veteran

Posts: 736
50010010025
Location: Central Ory-Gun
You might be in questionable territory at 10:1 unless the cam has alot of valve overlap.
The older I get the more conservative I become so the 9.5 looks good to me in a wedge headed engine unless you start adding a bunch of electronics.
Swapping heads or head gaskets are easier than changing pistons. JMHO
Top of the page Bottom of the page
57chizler
Posted 2018-07-02 2:18 PM (#565888 - in reply to #565859)
Subject: Re: howards cam



Expert

Posts: 2940
200050010010010010025
Location: NorCal
60 dart - 2018-07-01 12:47 PM

is 10.0:1 CPR too much for pump gas and should i stick with 0.020 head gasket or the 0.040 @ 9.5:1 cpr


The possibility of detonation at higher compression ratios invokes the subject of quench. With the closed chamber heads it's easier to get good quench but the desired quench is in the .020" neighborhood so a deck of .023" and a gasket of .020" (total .043" quench) isn't optimal but might be better than the .063" quench that the thicker gasket provides. IOW, you might be better off, detonation wise, with the higher compression.

Scroll down a little over half way to the "Squish and Quench" chapter on this page:

http://www.hotrod.com/articles/cylinder-heads/

Top of the page Bottom of the page
60 dart
Posted 2018-07-03 12:40 AM (#565918 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
i'm thinkin with the 516 heads , which i have , it'll be ok with .020 head gaskets .................... 64 came with these heads which i also have, weren't they also oem steel head gaskets around .020 ---------------------------------------------later
Top of the page Bottom of the page
60 dart
Posted 2018-07-03 12:43 AM (#565919 - in reply to #564743)
Subject: Re: howards cam



Expert 5K+

Posts: 8363
5000200010001001001002525
Location: WHEELING,WV.>>>HOME OF WWVA
thinkin something like this ,,,,,,,,

https://www.hotrod.com/articles/ideal-quench-height/
Top of the page Bottom of the page
Jump to page : 1
Now viewing page 1 [50 messages per page]
Jump to forum :
Search this forum
Printer friendly version
E-mail a link to this thread



(Delete all cookies set by this site)