The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-10-2020, 09:15 PM   #1
General23cmp
Senior Member
 
Join Date: Mar 2016
Location: Athens, AL
Posts: 306
Camshaft selection and overdrive

Looking at a 224 duration (at 0.050Ē) cam and another 228 one for my 6L build. Itís a high compression pump gas build (I should be able to get by with a little more duration), and will have a 4L60e behind it. Iím open to torque converter options, depending on the cam I select, but was wondering about overdrive and bucking/drivability. Iíll probably be changing my rear gears to help raise my cruising rpms, but am debating how far to go. I do want overdrive.

What have you guys with overdrive been able to get away with for duration and have good cruise manners at 50+ mph?
General23cmp is offline   Reply With Quote
Old 12-04-2020, 07:54 PM   #2
Duck1
Registered User
 
Join Date: Dec 2018
Location: San Bernardino
Posts: 22
Re: Camshaft selection and overdrive

You never mentioned your rear gears or wheel size
Duck1 is offline   Reply With Quote
Old 12-04-2020, 09:46 PM   #3
gmc684x4
Registered User
 
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,038
Re: Camshaft selection and overdrive

I would ditch the 4l60e and start looking for a 4l80e which will live longer behind your 6 liter
gmc684x4 is offline   Reply With Quote
Old 12-05-2020, 03:59 AM   #4
EVRLET
Registered User
 
EVRLET's Avatar
 
Join Date: Aug 2015
Location: Las Vegas NV
Posts: 251
Re: Camshaft selection and overdrive

What makes you think a 4L60E should be ditched for a 4L80E? Thereís nothing wrong with a 60 behind a 6.0. Heck, GM offers an LS3 connect and cruise package with a 65 or 70 transmission.

So many people bash the 60 because the internet bandwagon said theyíre junk. Thereís nothing wrong with a 60 transmission.

I can attest to my stock 60 in my 2001 Silverado with a turbo 5.3 that has taken a beating for the last 3 years and still is going strong. Yes, all stock except it has a Circle D converter. I have built a 60 with just about every Sonnax part installed and itís behind an 800hp 6.0 turbo. That transmission is going on itís 5th year with zero issues.

So many haters of the 60 but so many also donít know how good a 60 is. Two each their own.
__________________
Customization is what you want it to look like -- not what other people think it should look like
EVRLET is online now   Reply With Quote
Old 12-05-2020, 12:02 PM   #5
gmc684x4
Registered User
 
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,038
Re: Camshaft selection and overdrive

Its a 6 liter comes with a 4l80e

and the fact I can take a mid mileage 4l80e use it as is with out having to put a ton of money into it with a lot of sonex parts to make it handle the abuse i know it will get
gmc684x4 is offline   Reply With Quote
Old 12-05-2020, 06:11 PM   #6
LS short box
Registered User
 
Join Date: Jun 2015
Location: Carlos MN
Posts: 712
Re: Camshaft selection and overdrive

My .02 on the cam is I would do the 224I duration about 230 on the exhaust. Around .590 lift with either a 112 or 114 lobe center line. The 112 will give you bit more low end with more chop at idle. The 114 will smooth out the idle a bit but loose a bit at the low end. Should be a piece of cake to tune.
I like Circle and Yank billet converters. I have 3000 stall Yank in my 68. It drives like stocker until you nail it. Because where I live there are a lot of 40 mph roads so I have the tuner program the ECM to lock up the torque converter at 45 mph. Prevents lugging the engine.
I'm running 20" tires. 285/40. 4:10 gears.
LS short box is offline   Reply With Quote
Old 12-05-2020, 06:48 PM   #7
General23cmp
Senior Member
 
Join Date: Mar 2016
Location: Athens, AL
Posts: 306
Re: Camshaft selection and overdrive

Quote:
Originally Posted by LS short box View Post
My .02 on the cam is I would do the 224I duration about 230 on the exhaust. Around .590 lift with either a 112 or 114 lobe center line. The 112 will give you bit more low end with more chop at idle. The 114 will smooth out the idle a bit but loose a bit at the low end. Should be a piece of cake to tune.
I like Circle and Yank billet converters. I have 3000 stall Yank in my 68. It drives like stocker until you nail it. Because where I live there are a lot of 40 mph roads so I have the tuner program the ECM to lock up the torque converter at 45 mph. Prevents lugging the engine.
I'm running 20" tires. 285/40. 4:10 gears.
Thanks. As you can see I posted this 3 months ago, but Iím glad to see your response. I went with a 224/228-0.600/0.600 on a 112. Itíll be some time before itís all ready though.
General23cmp is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:38 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com