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S&S Cycle

S&S Cycle 74" Top End Kit For Harley Shovelhead 1966-1978

Item: P360989
6 Read 6 Reviews Write a Review
S&S Big Bore Kits and Cylinder Heads for Harley Review
S&S Cycle 74" Top End Kit For Harley Shovelhead 1966-1978
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This product DOES NOT FIT your 2021 Ducati Multistrada V4

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S&S Big Bore Kits and Cylinder Heads for Harley Review

Product Details

Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style S&S Cycle 74" Top End Kit For Harley Shovelhead 1966-1978 RevZilla Item #1182111 Store Sku MFR. Product #90-0097 AvailabilityIn Stock: Ships next business day

This product DOES NOT FIT your 2021 Ducati Multistrada V4

Fitment Notes & Exceptions
  • 74" engines have a stroke of 3-31/32" and 80" engines have a 4-1/4" stroke but the cylinder length for both engines is the same. The 74" piston is taller than the 80" piston, which results in the same piston-to-head clearance for both engines. While it is possible to install an 80" top end on a 74" engine, this will result in very low compression and poor performance. A 74" top end will bolt to an 80" crankcase but the pistons will contact the cylinder head due to the combination of the taller 74" pistons and the longer stroke of the 80" flywheels. Therefore, it is important to correctly identify the stroke of the engine before ordering a top end kit.
This Product Fits
Harley Davidson
Electra Glide Sport FLHS 1977, 1978
FLFB 1966, 1967, 1968, 1969
FLH 1966-1978
FLHB 1966, 1967, 1968, 1969
FLHF 1970, 1971, 1972
FLHFB 1966, 1967, 1968, 1969
Low Rider FXS 1977, 1978
Super Glide FX 1971-1978
Super Glide FXE 1974, 1975, 1976, 1977, 1978
Product Description
Part Numbers
Fitment
6 Customer Reviews
6 5/5
0 Questions & 0 Answers
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