Pontiac 400 455 Ram Air IV Hyd FT Cylinder Head Top End Engine Combo Kit Kits include: Fully assembled aluminum

Kits include: Fully assembled aluminum cylinder heads

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These combinations start with a reliable Speedmaster 9

resistance and turns ratios to deliver10-15% more energy than the OEM coils

Although the GM heads are good pieces

Pontiac 400 455 Ram Air IV Hyd FT Cylinder Head Top End Engine Combo Kit Kits include: Fully assembled aluminumDon't spend hours figuring out which pieces and parts you need to get what you want from your engine. Speedmaster has already done the work for you; our Top End engine kits will save you the time and hassle of mixing and matching components yourself. These kits are specifically designed to deliver the performance you want, at a better price than purchasing the parts separately.