Notices
Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

Cam Motion 5.3 "drop in" cam results, +41rwhp/22rwtq

 
Old 07-19-2017, 10:38 PM
  #101  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,768
Default

Gotta say, once GM put EFI and good ignition on the big block, it got way more efficient and powerful. Actually turned it into a decent engine, for what it was.
G Atsma is offline  
Old 07-20-2017, 02:01 PM
  #102  
11 Second Club
Thread Starter
iTrader: (18)
 
thunderstruck507's Avatar
 
Join Date: Mar 2008
Location: Northwest AR
Posts: 8,345
Default

Originally Posted by RedDeadG8 View Post
what octane gas is being ran in it?
It could have been tuned to use 87 octane but I did not because even stock the truck picked up noticeable seat of the pants gains with more timing (especially in low RPM areas).

The truck was tuned for 89 octane before the cam and I retuned for the cam but kept it tuned for 89 octane so it would be a fair comparison before/after.

I could probably have squeezed a few more HP out of it on 91 octane but I wanted to keep the tune conservative enough I can run on 87 in a pinch because some small towns in Oklahoma and Arkansas only have 87.

I will say that the timing maps are not optimized. I used an Fbody high octane timing table then adjusted it down until it was happy and played around with it in the area of peak torque. The low octane table is either stock truck or close to it.

That said the truck seems to feel better when I put 91 octane fuel in it anyway, especially in summer. This could be a placebo effect though.
thunderstruck507 is offline  
Old 07-20-2017, 03:09 PM
  #103  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,768
Default

Originally Posted by thunderstruck507 View Post
That said the truck seems to feel better when I put 91 octane fuel in it anyway, especially in summer. This could be a placebo effect though.
Do you EVER feel/hear it knock or ping, which would then pull timing, on 87 gas?
G Atsma is offline  
Old 07-20-2017, 03:14 PM
  #104  
11 Second Club
Thread Starter
iTrader: (18)
 
thunderstruck507's Avatar
 
Join Date: Mar 2008
Location: Northwest AR
Posts: 8,345
Default

I do not feel it knock or ping but at one point I logged and there was a couple degrees KR during a WOT downshift with 87 fuel in the tank on the tune which again is meant for 89.
thunderstruck507 is offline  
Old 07-20-2017, 03:23 PM
  #105  
TECH Senior Member
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 9,768
Default

OK, thank you for responding so quickly! Sounds like you have it dialed in pretty well! You've mentioned before how well the truck runs with the "new" cam. I call it a winner!
G Atsma is offline  
Old 12-12-2017, 03:09 PM
  #106  
Teching In
 
swathdiver's Avatar
 
Join Date: Aug 2017
Location: Treasure Coast of Florida
Posts: 5
Default

Originally Posted by [email protected] View Post
I saw similar results with a 206/206 .513/.513 115+3 cam I sold to a gentleman... The result was a solid 35rwhp/30rwtq gain across the board in extremely similar fashion to Thunder Struck's results.
Did the fella ever explain his reasoning for the 206-206 camshaft?

The L33 and early non VVT Gen IV motors had the 193-193 cams with .482-.482 lift and the VVT cams seem to add duration and lift on the exhaust side.

I was wondering what 5% more duration and lift would do when I came across this post.
swathdiver is offline  
Old 08-17-2018, 12:11 PM
  #107  
Teching In
 
Join Date: Apr 2018
Location: South Carolina
Posts: 7
Default

1 more Bump Just ordered this cam for my 2000 Silverado Ext Cab 5.3 LM7. Doing 243 head swap(shaved .25) new valves 2.02/1.57 with Pac beehive springs. Currently getting new 4l60e installed with stock converter already have CAI stock intake , Magnaflow muffler with 3" tail pipe stock cats and stock manifolds. Just want a little more pep from my daily driver. Will have this tuned also.
Gmoney5.3 is offline  

Thread Tools
Search this Thread
Quick Reply: Cam Motion 5.3 "drop in" cam results, +41rwhp/22rwtq


About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: