Pacemaker | Competition Headers | Holden HK-HT-HG Small Block Chev V8 283-400 | PH5305 L/R

Pacemaker 4-into-1 Competition Headers - Holden HK-HT-HG Small Block Chev V8 - PH5305 L/R

Maximize the performance of your Small Block Chevrolet-powered classic Holden with these Pacemaker Competition Headers. Specifically engineered for the HK, HT, and HG series, these 4-into-1 tuned headers are designed to provide superior exhaust flow for engines ranging from 283 to 400 cubic inches. Whether you are running a street machine or a track-oriented build, these headers deliver the high-flow efficiency your V8 demands.

Features:

This product offers the following high-performance features:

• Tuned 4-into-1 Design: Precision-engineered primary lengths ensure optimal exhaust scavenging and maximum power output.
• Slant Plug Compatibility: Designed to clear slant plug cylinder heads, providing flexibility for various performance head setups.
• High-Flow 3" Outlet: Large 76mm outlet minimizes backpressure, allowing your SBC motor to breathe freely.
• Automatic Transmission Fitment: Compatible with Powerglide and Turbo 400 automatic transmissions (see important notes regarding T400).

Important Notes:

• Will fit slant plug heads and Powerglide automatic transmissions.
• Will fit Turbo 400 automatic only if the vehicle floor has been modified/cut for correct fitment.
• Requires original engine mounting spacers or PACEMAKER spacers (Part # PEMP 307). Spacers must be fitted to the correct side (RH is 1/4” higher than LH).
• Fits LH hydraulic clutch conversions only.
• Will not fit: Column automatic models or vehicles equipped with Power Steering.

Important Information

• The image shown may not reflect the actual product
• Shipping times may vary depending on destination and stock availability

Vehicle Applications:

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