 Intake runner question, Getting The BB engine ready to install |
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| robkammer |
 Jun 10 2026, 06:03 PM
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#1
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Robbo  Group: Members Posts: 273 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: NineFourteenerVille  |
Brain trust: On our 74 FI BB engine, I’m at the point of connecting the FI intake runners and the throttle body to the engine. It looks to me to be a puzzle of what to put together first. So many questions:
Lube the runners and hose joints? Sealer or grease on the runners to the heads? What sequence works best? Runners to plenum? Runners to heads? How many hands do I need? Robbo |
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| jim_hoyland |
Jun 10 2026, 06:19 PM
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#2
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Get that VIN ? Group: Members Posts: 10,082 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California 
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(IMG:style_emoticons/default/confused24.gif) Good question
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| JeffBowlsby |
Jun 10 2026, 10:33 PM
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#3
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,267 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Resist the urge to overthink this, it’s not that hard and is forgiving.
Mount plenum to engine, TB to plenum, or put these together on the bench. Slide each runner side into the plenum gaskets, no sealer/lube needed, they shrink up tight. Use a thin coat of high heat copper sealant on both surfaces of the head/runner gaskets and tight them down. Done. |
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| robkammer |
Jun 11 2026, 05:22 AM
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#4
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Robbo Group: Members Posts: 273 Joined: 7-January 21 From: Vermilion Ohio Member No.: 25,049 Region Association: NineFourteenerVille |
QUOTE(JeffBowlsby @ Jun 11 2026, 12:33 AM)  Resist the urge to overthink this, it’s not that hard and is forgiving. Mount plenum to engine, TB to plenum, or put these together on the bench. Slide each runner side into the plenum gaskets, no sealer/lube needed, they shrink up tight. Use a thin coat of high heat copper sealant on both surfaces of the head/runner gaskets and tight them down. Thanks Jeff! Done. |
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