heat riser part#
Race Director
Joined: Oct 2000
Posts: 12,679
Likes: 3,130
From: Shamong, NJ
Chevrolet part numbers before 79-80 were either 6 or 7 numbers, without any breaks and usually started with "3". From about 1980 on, new part numbers were 8 numbers with no breaks and started with "14".
15-6844 may be an AC Delco part number since they are often hyphenated, but if it is it's a discontinued number because it doesn't turn up on a search at Delco's website. If I get a chance later I'll see if I can find one of my old paper Delco catalogs and see if it's listed.
15-6844 may be an AC Delco part number since they are often hyphenated, but if it is it's a discontinued number because it doesn't turn up on a search at Delco's website. If I get a chance later I'll see if I can find one of my old paper Delco catalogs and see if it's listed.
Race Director
Joined: Mar 2017
Posts: 11,946
Likes: 4,506
From: Virginia
If you have it out of the car, NEVER put it back in.
If you want, you can put a blank spacer in there to make up the difference. Either modify yours, or buy one of these:
2" https://www.zip-corvette.com/58-74-2...pe-spacer.html
2.5" https://www.zip-corvette.com/62-69-2...pe-spacer.html
If you want, you can put a blank spacer in there to make up the difference. Either modify yours, or buy one of these:
2" https://www.zip-corvette.com/58-74-2...pe-spacer.html
2.5" https://www.zip-corvette.com/62-69-2...pe-spacer.html
Race Director
Joined: Nov 2006
Posts: 13,225
Likes: 7,823
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Couldn't agree more. Lose that horrible thing. You can put in a spacer, or sometimes that's not even needed. Enough slack in the exhaust to just pull it up that little bit. Depending on the exhaust system to be certain.
If you do run the car in sub zero weather. Perhaps it could be useful for quicker warm ups. If your still running the stock intake manifold and it's not all blocked up with carbon.
If you do run the car in sub zero weather. Perhaps it could be useful for quicker warm ups. If your still running the stock intake manifold and it's not all blocked up with carbon.
Melting Slicks
Joined: Sep 2016
Posts: 2,228
Likes: 981
From: Wauconda IL
Le Mans Master
Joined: Jun 2019
Posts: 7,653
Likes: 2,468
From: Indiana
Part number recommended seems correct.
i suggest spacer as it gives more clearance to starter but as mentioned has enough slack.
i rn cold weather and it adds time to choke warm up but not enough to care.
note the spacer i got needed the holes enlarged…
i would not put one back on that unless judging?
i suggest spacer as it gives more clearance to starter but as mentioned has enough slack.
i rn cold weather and it adds time to choke warm up but not enough to care.
note the spacer i got needed the holes enlarged…
i would not put one back on that unless judging?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski