How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask ASEMaster35yrs Your Own Question
ASEMaster35yrs, Chevy Technician
Category: Chevy
Satisfied Customers: 2095
Experience:  ASE Certified since 1972,Master Auto tech,Heavy Truck Tech ,chev dealer tech
Type Your Chevy Question Here...
ASEMaster35yrs is online now
A new question is answered every 9 seconds

i have 454 block 14015445 date code i think E172 8 number

Customer Question

i have 454 block 14015445 date code i think E172 8 number on front pad TDS523195 came out of 1 ton dually not sure if original what can you tell me about this block
Submitted: 6 years ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 6 years ago.


this came out of a light duty 1975-1987 truck 454ci


please ACCEPT my answer so I can get credit for my work.i don't receive commission unless you do ..i'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my does not cost you more money.we will still be able to communicate.. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.PLEASE ASK IF YOU NEED MORE HELP

Customer: replied 6 years ago.
hi can you tell me more the truck sounds right but is it a 2or4 bolt what kind of hp and torque also is it capable of good hp do the heads need to be changed in order to obtain this is this block a good starting place or should look for a older block thanks
Expert:  Tim's Auto Repair replied 6 years ago.


this is all i have on this,,i will opt out and let one of the other guys help you


Customer: replied 6 years ago.
i have asked for more info how much hp and torque does this engine is it a good bsae to start rebuild for good hp are the heads ok or should i go to aluminum head #'s are d12 78 passx gm12T 336781 can you help
Expert:  ASEMaster35yrs replied 6 years ago.

Give me the numbers and last three letters above the timing cover on the block and I can give you more information such as horsepower.


Date code: E 17 8 =May 17th 1978

Block casting number: 14015445.....454........78-90........2 or 4 bolt Truck

TDS523195=VIN serial number match this number to the vin on truck if original.

Head Casting number: 336781 454 73-85 Oval Port Open 113.0cc Valve size 2.06 intake, 1.72 exhaust


Big Block Chevy Cylinder Heads

Open vs. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. Closed-chamber cylinder heads have small combustion chamber volumes for high compression ratios, with even mildly domed pistons. Open chamber designs are larger and provide lower compression ratios, so require a much larger piston dome to achieve the same compression as a closed-chamber head.



Edited by ASEMaster35yrs on 1/26/2010 at 1:39 AM EST
Customer: replied 6 years ago.
hi the number on the pad by the timing cover is TDS523195 so you think i will need a bigger dome piston to get the comp. ratio up are these good heads or should i go to the more costly aluminum thanks
Expert:  ASEMaster35yrs replied 6 years ago.

Aluminum heads are very expensive. You'd be better off getting a cheap set of closed chamber oval port heads to raise your compression. You will have to stick with oval port heads unless you intend to change your intake and exhaust manifolds as well.


Check out this article on how to build a performance 454 on a cheap budget.


Here's another good article:


You don't want to raise your compression above 10.5:1 or you'll become addicted to airports for fuel and octane booster.

Edited by ASEMaster35yrs on 1/26/2010 at 6:35 AM EST

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... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...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 L Rochester NY
< Previous | Next >
  • 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 L Rochester 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, 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. Robin Elkton, Maryland

Meet The Experts:

  • GM Tech (Cam)

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
< Last | Next >
  • GM Tech (Cam)'s Avatar

    GM Tech (Cam)

    Chevy Technician

    Satisfied Customers:

    GM Grand Master Technician 2007. 14 years experience.
  • Tim's Auto Repair's Avatar

    Tim's Auto Repair


    Satisfied Customers:

    Have owned a repair shop for 25 yrs.
  • Gary's Avatar


    Chevy Technician

    Satisfied Customers:

    15 years GM master tech
  • Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    ASE Master Certification. GM World Class Certification
  • John's Avatar


    Master A.S.E Automotive technician

    Satisfied Customers:

    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Auto Mech / Electronics

    Satisfied Customers:

    Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
  • Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    18+yrs experience. State Inspector and Chevy Diagnostics