GM

GM Repair Problems? Ask GM Repair Expert Now.

Ask an Expert,
Get an Answer ASAP!

GM

454 chevy: timing chain..the crank or cam to set at 2 degrees

Customer Question
how do i install adjustable...
how do i install adjustable timing chain and sprockets in a 454 chevy, and which way do i move the crank or cam to set at 2 degrees advanced
Submitted: 6 years ago.Category: GM
Show More
Show Less
Ask Your Own GM Question
Answered in 6 hours by:
7/3/2011
GM Mechanic: Virtual Wrench, GMC Mechanic replied 6 years ago
Virtual Wrench
Virtual Wrench, GMC Mechanic
Category: GM
Satisfied Customers: 14,620
Experience: 35 years Master Mechanic
Verified
Hello, sorry for the delay,

Did you install a stock chain and gear set, instead of the adjustable set it had on it?
Ask Your Own GM Question
Customer reply replied 6 years ago
yes, i did not realizing it had a adjustable sprocket on the crank. How do I mend this can i advance the crank 4 degrees to get the cam on 2 degrees and then remove the chain and turn the crank back to TDC and reinstall the chain to get the advance?
GM Mechanic: Virtual Wrench, GMC Mechanic replied 6 years ago
Hi,

If you are using a stock cam gear it can only go on one way.

Why do you want to install that crank gear instead of the stock one and take up the advance in the timing with the distributor. Unless it has a real radical cam i don't see the need. Just curious???




Ask Your Own GM Question
Customer reply replied 6 years ago

it has a radical cam, but i don't know what it is, the cam was offset from staight up and down and now since i lined the timing marks up on the stock sprockets it pops back

through the cab, the distributor is new and in time with #1

Customer reply replied 6 years ago
also the carb is new plugs and wires rotor distributor cap are also new
GM Mechanic: Virtual Wrench, GMC Mechanic replied 6 years ago
Hi,

Even with performance cam it should still start. I think you may have the dist 180 degrees off. When the marks are lined up like the diagram below, it's actually supposed to have the dist pointing at #6 cylinder , not #1.......that's because the cam turns once to the crank twice so if the cam AND crank gears are in the 12:00 position it would be firing on #1...

Slowly Turn the crank until you feel compression in #1 cylinder with the plug out, then slowly rotate it until the mark on the balancer is at TDC and pull the cap and I'll bet it's pointing at #6.....Pull the dist and rotate it so it points to #1 and fire it up.





If you have further questions feel free to reply. Please remember we use an honor system and you have to click on accept so i receive credit for assisting you. Your question does not close and you can post back right here at anytime for related info for no extra charge.
Virtual Wrench
Virtual Wrench, GMC Mechanic
Category: GM
Satisfied Customers: 14,620
Experience: 35 years Master Mechanic
Verified
Virtual Wrench and 87 other GM Specialists are ready to help you
Ask your own question now
Customer reply replied 6 years ago

moving the distributor 180 did not help it got worst it would not run at all and shot fire out of carb don't believe this was the problem. changed it back and it runs but when i punch it it still sputters back through the carb, can speed up slowly and it will wind out. can not adjust it out with disributor or carb can not find any vaccum leaks either

GM Mechanic: Virtual Wrench, GMC Mechanic replied 6 years ago
Hi sorry for the delay been at a picnic all day (still am) using my cell phone,

It sounds like a flat spot in the accelerator pump. With the engine off, move the throttle slowly and see if it has 2 srtrong streams of gas. Don't throttle it real quick because that doesn't simulate actual driving conditions, just nice smooth throttle like you would give it when it hesitates...and watch that stream closely. It HAS to be steady and strong.

Also you should be setting the timing to around 10 degrees advanced without any vacuum advance connected. (i'm approximating on the setting because i don't know what it's in, gear ratio, etc...)

If you have any further questions just reply and i will get back as soon as i can.

Bye for now...
Ask Your Own GM Question
Ask Virtual Wrench Your Own Question
Virtual Wrench
Virtual Wrench
Virtual Wrench, GMC Mechanic
Category: GM
Satisfied Customers: 14,620
14,620 Satisfied Customers
Experience: 35 years Master Mechanic

Virtual Wrench is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

GMC Mechanic

5,792 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

GMC Technician

1,523 satisfied customers

15 years gm master tech/15 years ASE master tech

car tech

car tech

ASE Certified Technician

449 satisfied customers

25 year master tech and shop owner

Chris (aka- Moose)

Chris (aka- Moose)

GMC Technician

203 satisfied customers

16 years of experience

Paul M ASE Master

Paul M ASE Master

ASE Master Tech

187 satisfied customers

ASE Master Tech 20+ Years

Anthony

Anthony

GMC Technician

489 satisfied customers

GM Certified

Amedee

Amedee

GMC Technician

451 satisfied customers

ASE certified tech with advanced level specialist. Wisconsin certified emissions state inspector

< Previous | Next >

Related GM Questions
Exhaust fluid system see owners manual now. 39,000 klm 2016
39,000 klm 2016 Sierra. Stopped and filled DEF but still have same message. … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
I have a 1998 C1500 with automatic, 2 wheel drive. My son
I have a 1998 C1500 with automatic,***** My son borrowed the truck and said he broke the shift lever when he put it in park. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
SALUDOS. 2013. CODE U0101-00. I put the keys to another car
I put the keys to another car misplaced and I have a problem with the trasmission … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
I put 2 gallons of diesel by mistake. From a gas can. 2007
I put 2 gallons of diesel by mistake JA: How old is the engine? And when was it last serviced? Customer: From a gas can JA: What is the model/year of your GM? Customer: 2007 envoy JA: Are you fixing y… read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,523 satisfied customers
ABS and Brake Light on. Both. With ABS codes B2610, U1000,
With ABS codes B2610, U1000, U1096, U1161 2005 Chevy Tahoe 5.3L … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I just got a 2003 H2 at an auction and wont shift gears
I just got a 2003 H2 at an auction and wont shift gears after 40mph and service 4wd light is on, vehicle has 129k miles, what should I check for? … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
Low beams will not come on. 2007 GMC Envoy. Checked lamps,
yes - checked lamps, fuses. Both OK. High beams will only come on in manual, not with flicker. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Where is the day time running light module? Well my low beam
Well my low beam and running lights aren't working and there's no power at the fuse. It's an 04 envoy … read more
Mechanic01
Mechanic01
1,160 satisfied customers
Will the 20” rims of my previous owned 2011 Yukon Denali fit
Will the 20” rims of my previous owned 2011 Yukon Denali fit my 2015 Sierra Denali 1500 series… read more
Expert
Expert
13 satisfied customers
I have a 2007 Hummer H2 w a swing out spare tire mount. I
I have a 2007 Hummer H2 w a swing out spare tire mount. I would like to remove it. 1) is the removal of the swing arm simply an un-bolt or will I have to buy replacement parts. 2) I want to replace th… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
97 1500 5.7 Installed new fuel pump, Have 55psi at the rail,
97 1500 5.7 Installed new fuel pump, Have 55psi at the rail, only runs on either. What could have happened?… read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Left rear cab is filling with water seem like the drain tube
left rear cab is filling with water seem like the drain tube is to short. shouild the drain tube exit through the in bottom of cab corner? … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
We have a 1997 GMC Sierra 4x4 we bought new and has 150,000
We have a 1997 GMC Sierra 4x4 we bought new and has 150,000 on it. The transmission torque converter was rebuilt at 49,600 miles. The problem is that when we put a stop Is that when we put a strain on… read more
Gary
Gary
GMC Technician
Vocational, Technical or Trade Scho
1,523 satisfied customers
Having trouble with chevy cobalt 2006, coolant temp on gage
having trouble with chevy cobalt 2006, coolant temp on gage in car reads 252F when I disconnect the coolant sensor the temperature drops to 232F, checked sensor with meter and tests ok, cooling fan ru… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,895 satisfied customers
I have a 2007 Chevy Tahoe. I set the parking brake and I
I have a 2007 Chevy Tahoe. I set the parking brake and I can't get it to release back up. The Tahoe won't move.… read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
04 Yukon AC is cooling and suddenly starts blowing hot air,
04 Yukon AC is cooling and suddenly starts blowing hot air, I shut off engine and AC works OK.… read more
Aran
Aran
Technician
Associate Degree
392 satisfied customers
Need to check community on a 2011 gmc 1500 5.3 6 speed tcm
Need to check community on a 2011 gmc 1500 5.3 6 speed tcm what pins z would it be … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
How do I find the engine size for my 2007 Hummer H3? I am
How do I find the engine size for my 2007 Hummer H3 ? … read more
Chris (aka- Moose)
Chris (aka- Moose)
GMC Technician
Vocational, Technical or Trade School
203 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x