Design a custom cam for me thread

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Aug 26, 2011 | 11:20 AM

#61

trey1010

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I have the tsp 228r on 110 lsa and I love it. Here is a sound clip.

Aug 26, 2011 | 12:25 PM

#62

hiltsy855

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Quote:

Originally Posted by 01ssreda4

Been talking with a guy about playing with idle timing advance/retard to give the smaller cams that big cam sound. I'd look into this first before changing a cam for sound.

Did he say advance or retard (I mean commit either way)? I've played around with idle timing a bit but didn't go too far either way.

Aug 26, 2011 | 12:34 PM

#63

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Its his tuning secret, so he wont divulge too much.

Aug 26, 2011 | 12:50 PM

#64

Camaro Z

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From: Monroe, Iowa

Quote:

Originally Posted by 01ssreda4

OK, so....louder exhaust = more cam lope and no more engine noise....WIN!!!

+1 lol

http://www.youtube.com/watch?v=PzYebweSaSw

Honestly though, I do not have a lot of experience with cams but mine does not have a lot of valvetrain noise. It's louder than stock but it does not bother me at all. Whether it's more quiet than other cams I can't say. As far as the performance of the cam, I'm glad that I did not go any larger or smaller. It seems to be a good in-between cam without sacrificing much on either end. If you have any questions OP, feel free to ask.

Aug 26, 2011 | 01:35 PM

#65

speedtigger

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Quote:

Originally Posted by hiltsy855

Did he say advance or retard (I mean commit either way)? I've played around with idle timing a bit but didn't go too far either way.

People say to retard the timing.

Aug 28, 2011 | 11:07 AM

#66

A.R. Shale Targa

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From: Fredonia,WI

Quote:

Originally Posted by speedtigger

People say to retard the timing.

That would make yours bump a little more @ idle but because of the carb it
may also dirty the plugs sitting at a long stoplight. I think CAMAROZ's cam
would sound great with yours having 18 more cubes and almost 10.9 comp.
Not that your current combo isn't great but you have enough stall and gear to maybe shift your powerband 500 rpm north and not lose any of its street
friendly manners.

Sep 6, 2011 | 11:21 PM

#67

speedtigger

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I thought I would throw this into the mix. These are new cams by Lunati just for carbed LS set ups:

LS1 WITH CARB

60519** 2400 - 6800 CAMSHAFT, GM LS VHRX278-08CX 278/282 227/231 .651/.651 108/108

60520** 2800 - 7000 CAMSHAFT, GM LS VHRX286-08CX 286/294 235/243 .651/.651 108/108

60521** 3200 - 7200 CAMSHAFT, GM LS VHRX298-08CX 298/306 247/255 .651/.651 108/108

60522** 3600 - 7500 CAMSHAFT, GM LS VHRX306-08CX 306/314 255/263 .651/.651 108/108

Here is a link to the page:
http://www.lunatipower.com/Media/Doc...0LS%20Cams.pdf

Sep 6, 2011 | 11:41 PM

#68

LilJayV10

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Quote:

Originally Posted by speedtigger

Here is the official recommendation from Patrick G:

EPS 226/230 .598/.600 on 111 LSA with a 109 ICL

I have the same cam installed with a LSA 112+2 on a 109.5 ICL

http://www.youtube.com/user/LilJayV10#p/u/5/QbuBABd-6oY

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Sep 7, 2011 | 10:01 PM

#69

SOMbitch

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I have noticed the that valvetrains in these cars that run a true roller rocker tend to be quieter than OEM rockers. If it has a tick you most likely have a setup or mechanical issue but with a more aggressive higher lift cam and the springs required for it the sewing machine noise is to be expected. Also I think some people just have more sensitivity and less tolerance for it (which may be your case???)....

Sep 7, 2011 | 10:05 PM

#70

bad6as

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Quote:

Originally Posted by speedtigger

I have completed my build and it is a great success. I just wish I had more lope in the idle. So, I am considering putting in a new, larger cam profile. I have a pretty good idea, what I would design, but I thought it would be fun if everyone said what they thought would be ideal. I have already sent Patrick G $25 bux, so when he is done, we can compare what we all came up with to what he suggests. Fun stuff.

Parameters:
The cam must utilize my existing PAC 1518 beehive springs.
I will be shifting no higher than 6500 RPM.
The cam must have enough vacuum to run my power brakes.
I want to maximize power, but I don't want to beat the hell out of my springs. I drive my car a lot.
I will not be changing my torque converter or rear gear.

Here is the set up.
1965 Skylark - 3500 lbs.
LQ9 with PRC Stage 1 CNC LS6 heads
10.88:1 compression
Performer RPM intake
Holley/Pro-Systems 780 CFM HP series carburetor
MSD 6010 ingition
Current Camshaft - 222/224 .566/.568 112 lobe separation on 110 Intake Center Line
Th200-4R transmission
3000 RPM Circle D converter
3.90 rear gear
28" tall tire

I will go first. I am thinking a Torquer V2 with a 110 lobe separation would be perfect. So: 232/234 .596/.598 on 110.

Here is a picture of the subject.

i have a cam only set up in my 98, was a 232/234 110+3. n/a was great, i added spray and wasnt as good as the overlap let some of the nitrous pass threw.
mabye a 230/234 111+2 xer lobes

Sep 8, 2011 | 12:23 AM

#71

PREDATOR-Z

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From: BFE

228/230 .588/.591 111+1 lsa

Sep 8, 2011 | 12:48 AM

#72

jc98ss

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Quote:

Originally Posted by PREDATOR-Z

228/230 .588/.591 111+1 lsa

this FTW!

.......Pred spec'd my cam and it makes old people run and hide when i drive by...

Sep 8, 2011 | 04:28 AM

#73

speedtigger

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From: Florida

Quote:

Originally Posted by bad6as

i have a cam only set up in my 98, was a 232/234 110+3. n/a was great, i added spray and wasnt as good as the overlap let some of the nitrous pass threw.
mabye a 230/234 111+2 xer lobes

Where were you shifting at?

Sep 8, 2011 | 07:04 AM

#74

bad6as

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6600 limiter, shift light on at 6400

Sep 8, 2011 | 10:20 PM

#75

A.R. Shale Targa

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From: Fredonia,WI

That Lunati 60519 cam is pretty close to Pred's cam suggestion....plus the
108 sep. should have a nice (0.140 bac) stumble

Sep 8, 2011 | 11:09 PM

#76

speedtigger

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From: Florida

Quote:

Originally Posted by A.R. Shale Targa

plus the
108 sep. should have a nice (0.140 bac) stumble

Is this some kind of EFI tuning jargon? I doubt my carburetor with feel the same way.

Sep 8, 2011 | 11:16 PM

#77

speedtigger

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From: Florida

Quote:

Originally Posted by Camaro Z

As far as the performance of the cam, I'm glad that I did not go any larger or smaller. It seems to be a good in-between cam without sacrificing much on either end. If you have any questions OP, feel free to ask.

Where did this cam make peak power when you dyno'd it?

Sep 12, 2011 | 06:05 PM

#78

speedtigger

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This dyno sheet is very interesting. It compares a F13 (230/232) cam to a 224 cam on the dyno. The f13 gives up very little down low for a 26 HP gain up top.

Here is the thread where I stole this graph:
https://ls1tech.com/forums/dynamomet...ts-inside.html

Here is another graph from Texas speed that really breaks down the little cams:

Attached Thumbnails

Design a custom cam for me thread-f13-dyno-graph-3s.jpg

Design a custom cam for me thread-220sduration.jpg

Last edited by speedtigger; Sep 12, 2011 at 07:00 PM.

Sep 12, 2011 | 10:29 PM

#79

01ssreda4

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From: Turnin' Wrenches Infractions: 005

I dunno about that dyno graph but I have ridden in a F13 cammed car and it was a complete dog in the bottom end (under 5k). I understand FMS comes with a good reputation but that's one of the reasons I never recommend them...my own personal experience.