1/2'' Pitch Drive Belt
To find the correct length drive belt for your 6-71 or 8-71 supercharger, do the following: Add the number of teeth on your top and bottom pulley. Look in the belt chart below in the column under the engine you are using and find the number that equals the total teeth on your pulleys, then read to the left for the proper belt part number.
|Supercharger Belt Application Chart|
|Part No.||Pitch||Small-Block Chevy||Big-Block Chevy, Std. Deck||Big-Block Chevy, Tall Deck (1)||Chrysler 392 Hemi||Belt Length|
|925-7006||1/2"||64 to 70||-||-||-||54.0''|
|925-7007||1/2"||70 to 78||64 to 66||-||65 to 69||56.0''|
|925-7008||1/2"||74 to 78||64 to 70||-||69 to 73||57.0''|
|925-7013||1/2"||-||68 to 77||64 to 69||75 to 78||58.5''|
|925-7009||1/2"||-||75 to 78||-||-||60.0''|
|925-7100||8mm||108 to 124||105 to 116||-||-||56.7''|
|*XX to XX = Min to Max Pulley Tooth Count|
(1) The belts listed are for WEIAND supercharger kits installed on a Chevrolet Big-Block tall deck with either a Weiand #8204 or #8206 manifold spacer kit or Weiand's new manifold #7152 (satin) or #7152P (polished).
(2) 1/2'' pitch measurement is taken from center of one tooth to center of next.
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