800.345.4545
Unrivaled Customer Service
And Expert Tech Advice!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories


Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help

JEGS Adjustable Vacuum Advance For GM V8 HEI

JEGS 40003

555-40003

jegs shipping
Ships
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
JEGS Adjustable Vacuum Advance For GM V8 HEI $13.59
Adjustable Vacuum Advance
  • For GM V8 HEI

  • JEGS 40003 Details

    JEGS Adjustable Vacuum Advance for HEI replaces the OE non-adjustable unit. Allows you to change the amount of ignition vacuum advance for maximum performance while preventing detonation. Improves fuel economy, throttle response, horsepower, and performance. Includes 3/32" Allen wrench and easy-to-follow instructions.

    40003 is rated 4.7 out of 5 by 3.
    Rated 5 out of 5 by from Works as advertised. I was not happy with the hot start function of the 350 HO crate engine I have in my GMC S15 pickup. I decide to install the HEI Adjustable Vacuum Advance to see if this may help the situation. The install and setup was super easy, took about 45 minutes. Results were excellent. Works as advertised.
    Date published: 2018-02-15
    Rated 5 out of 5 by from nice hard product to find nice product, hard to find other places, shipped very quick !
    Date published: 2016-04-09
    • y_2018, m_8, d_14, h_24
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasreviews, tv_1, tr_2
    • loc_en_US, sid_10001_10001_1245116, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    will this vacuum advance fit my pro billet msd distributor 8361.i dont think that my dist has adjustable vacuum advance

    Asked by: ellie
    This will only fit the original GM HEI distributors.
    Answered by: Rusty B
    Date published: 2018-05-16
    • y_2018, m_8, d_14, h_24CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_1245116, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
    Items You May Also Consider
    Some parts are not legal for use in California or other states with similar laws / regulations