r/EngineBuilding↗
Engine Building - V8s and More
Engine Building and Swaps - V8 and all the rest!
110k subscribers325 posts / mo in Sep 2026 (incl. <1% by known bots)282 authors / mosince 2017
r/EngineBuilding has 110k members (+26% over the last 12 months). It gets about 325 posts a month from 282 people. Top topics: Engine Rebuilds, Bearing Issues & Maintenance and Head Gasket Issues.
When to post on r/EngineBuilding
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How r/EngineBuilding has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/EngineBuilding
Top topics
Share of the subreddit's posts
- Engine Rebuilds13%
- Bearing Issues & Maintenance2.5%
- Head Gasket Issues2.2%
- Engine Swaps1.8%
- Engine Types & Projects1.8%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Pardon Our Interruption
- eBay
- Car-Part.com--Used Auto Parts Market
- Holley Performance Products
- MotorTrend
Everything else about r/EngineBuilding
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research