

© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
|
![]() |
#1 |
Registered Member
Join Date: Nov 2001
Location: Bay Area, CA
Posts: 58
|
![]() Whats the deal on retarding the cam? See here for a link of retarding the stock cam 4 degrees. Why????
http://www.alternativeauto.com/waterbox/index.html What do you think would happen if I retarded my cam in my completely stock motor? Is the stock cam installed straight up or already retarded? Would this hurt drivability, emmisions etc.? Anyone willing to try this or have tried this before? |
![]() |
![]() |
![]() |
#2 |
gear banger
Join Date: Aug 2000
Location: CHICAGO
Posts: 1,144
|
![]() Retarding the cam is said to give you some more topend power by giving up a little down low. Doing this on a stock 5.0 may or may not be helpful I don't know. On performance motors it is something to look at. Most aftermarket cams come with a advance or retard ground in them allready.
__________________
79 Hatch: NA 347, Stage 2 Canfield Heads, Victor JR. Intake, Blueprinted Holley 750 HP, Solid Roller Cam, Shooting for 10's on motor 93 LX: Tremec, dual friction clutch, fms flywheel, Hedman shorties, O/R H-pipe Ricer hater's club member #49 |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Jan 2001
Location: Moline Il
Posts: 901
|
![]() Yes, there are significant power gains associated with backing the stock cams up, in stock motors. Retarding cams is an 'old timers trick' to make up for a 'lack of' cam. You probably wont have the same results backing up a bigger cam in your 302.
I have heard a few different suggestions on how to find the best place to install your cam. The best way is to dyno your engine with the cam in multiple positions. Right now we are in the process of backing the cam up even more in my friends NMRA R/S car. We are going to test it at 6 and 8. We are not sure if the results are going to be what we hope they are, but you dont know until you try. In most stock cams, there is 1 degree of advance ground in. Andy
__________________
88 coupe 91 LX NMRA Pure Street 5120 |
![]() |
![]() |
![]() |
#4 |
Get down.....
Join Date: Apr 2001
Location: Room 103
Posts: 2,095
|
![]() does anyone know what it would do if i retarted my stock cam 4 degrees with the mods i have listed below?
__________________
Cobra brakes are on! Finally..... ------------------------------------------------ |
![]() |
![]() |
![]() |
#5 | |
Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
|
![]() Quote:
Take care, ~Chris
__________________
Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
RED & WHITE! |
|
![]() |
![]() |
![]() |
#6 | |
Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
|
![]() Quote:
Take care, ~Chris
__________________
Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
RED & WHITE! |
|
![]() |
![]() |
![]() |
#7 |
Registered Member
Join Date: Jan 2001
Location: Moline Il
Posts: 901
|
![]() Chris I have tested that method on two different cars and I have had mixed results.
The first car was a friends 83 with a 351w. It has 11:1 static compression ratio (approximately) and a cam similiar to the TFS stage 2. The further we advanced the cam, the more cylinder pressure we obtained. We ran the car on the street with the cam at -4 and +4. The car ran much better at +4! The second car was another friends 91 lx. It is a NMRA Real Street spec car. Its a .030 over 302, stock cam, custom flat top pistons, zero decked, 58cc chambers, and a .037 squish distance. The static calculates out to about 10.2:1. Also in that case the further we advanced the cam the more cylinder pressure we got. We know from all the NMRA Factory Stock, and Real Street stuff we have done, that isnt where the cams like to be. 4 degrees advanced (where we got the most cylinder pressure) is exactly the opposite of where we know they run best. I'm going to have my Pure Street engine on the dyno most of the winter. I will be testing multiple cam grinds, and also the position they are installed. I believe theres more to be learned, yet. Andy
__________________
88 coupe 91 LX NMRA Pure Street 5120 |
![]() |
![]() |
![]() |
#8 |
Get down.....
Join Date: Apr 2001
Location: Room 103
Posts: 2,095
|
![]() Chris. i was planning on putting an E cam in cause one of my lifters is bad, so it will give me and excuse to get a cam, but i dont think i am going to. If i can squeeze more power out of my stock compnents and all it will cost me is my labor and some gaskets, then i think it is worth it.
so i should go in increments and test cylinder pressure of each setting on the cam gear? the one with the highest is the best? is that what you want me to do? hey guys any suggestions of more power to squeeze out of my stock components would be helpful. i already know did all of the mods that i can think of so far. if retarding/advancing the cam will help, i will do that too.
__________________
Cobra brakes are on! Finally..... ------------------------------------------------ |
![]() |
![]() |
![]() |
#9 | |
Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
|
![]() Quote:
Take care, ~Chris
__________________
Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
RED & WHITE! |
|
![]() |
![]() |
![]() |
#10 |
Registered Member
Join Date: Nov 2001
Location: Bay Area, CA
Posts: 58
|
![]() Wow, this was a very helpful thread! Its like squeezing every drop of water from a rock in a desert the easy way. For those who have access to a dyno and will be running these different timings, please post your results. You don't have to give specifics but just the general findings is enough. TIA...
|
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Another tire question | 96Saleen | Modular Madness | 6 | 02-10-2004 05:27 PM |
A stupid question I hate asking about exhaust sound | jwboner | Windsor Power | 4 | 08-05-2003 05:55 PM |
simple question | Lonzo | Classic Mustangs | 3 | 09-10-2002 09:37 AM |
Mark VIII fan install question | FordGT145 | Windsor Power | 0 | 07-27-2001 08:15 PM |
Newby here, I have a question on Odometers | mustangmama | Blue Oval Lounge | 3 | 03-03-2001 06:43 AM |