# S&S Cycle 66-84 BT Retro Conversion 3-5/8in Bore Top End Kit

Here's a way to give your 3-5/8" bore shovelhead engine the nostalgic look of a pan, and improve performance at the same time. The Retro Cylinder Head and Valve Train Upgrade Kit consists of a set of S&S P-Series 3-5/8" single plug cylinder heads with rocker cradles, S&S roller rocker arms, S&S hydraulic tappets, billet tappet guides, Quickee pushrods, pushrod cover clips, and the required gaskets and hardware for assembly. Fits 3-5/8" bore engines in Harley-Davidson motorcycles.

This Part Fits:

Year

Make

Model

Submodel

1970-1984

Harley-Davidson

FLH Electra Glide

Base

1980-1984

Harley-Davidson

FLHS Electra Glide Sport

Base

1984

Harley-Davidson

FLHX Electra Glide Special

Base

1980-1983

Harley-Davidson

FLT Tour Glide

Base

1981

Harley-Davidson

FLTC Tour Glide Classic

Base

1971-1978

Harley-Davidson

FX Super Glide

Base

1982-1983

Harley-Davidson

FXR Super Glide II

Base

## Details

- **Price:** 6401.38 CAD
- **Vendor:** S&S Cycle
- **Type:** Heads

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 6401.38 CAD | In stock |

## Images

- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-66-84-bt-retro-conversion-3-5-8in-bore-top-end-kit)
> Updated: 2026-07-13