{"product_id":"comp-cams-91-602-5-big-mutha-thumpr-227-241-hydraulic-flat-cam-for-buick-364-425-nailhead-engines","title":"COMP Cams 91-602-5 Big Mutha' Thumpr 227\/241 Hydraulic Flat Cam for Buick 364-425 Nailhead Engines","description":"Classic Big Mutha' Thumpr 227\/241 Hydraulic Flat Cam Buick 364, 401, 425 Nailhead. Street\/strip needs 9.5:1 compression, 2800+ stall, intake, Gears and headers, very rough idle.\nStreet\/strip, must have head modification, 2500+ stall, very rough idle.\n\u003cp\u003eThe COMP Cams Big Mutha' Thumpr 227\/241 hydraulic flat camshaft (Part Number 91-602-5) is designed for high-performance street and strip applications on Buick Nailhead engines ranging from 364 to 425 cubic inches. Crafted to deliver aggressive performance, this camshaft features a street\/strip grind that requires modifications to the cylinder head for optimal operation. It is ideal for engines with a compression ratio of around 9.5:1 and a stall converter of 2800 RPM or higher, making it perfect for enthusiasts seeking significant power gains and a rough idle character. The cam's specifications include a duration of 227 and 241 degrees, providing a substantial increase in airflow and engine output, especially when paired with aftermarket intake, gears, and headers. This camshaft is not carb-approved and requires acknowledgment of this condition before installation, ensuring proper compliance with regulations and installation procedures. Designed specifically for 1965 and 1966 Buick Skylark, Electra, Riviera, and Wildcat models, it offers a straightforward upgrade path for those looking to enhance their engine's performance with a reliable, high-quality component from COMP Cams.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for Buick Nailhead engines from 364 to 425 cubic inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHydraulic flat camshaft with 227\/241 duration for aggressive performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRequires head modification for optimal performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for street\/strip applications with 9.5:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIdeal for engines with 2800+ RPM stall converter\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRequires acknowledgment of non-carb approval and installation considerations\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFits\u003cbr\u003e\nBuick Century Base 1957\u003cbr\u003e\nBuick Century Base 1958\u003cbr\u003e\nBuick Electra 225 1959\u003cbr\u003e\nBuick Electra 225 1960\u003cbr\u003e\nBuick Electra 225 1961\u003cbr\u003e\nBuick Electra 225 1962\u003cbr\u003e\nBuick Electra Base 1959\u003cbr\u003e\nBuick Electra Base 1960\u003cbr\u003e\nBuick Electra Base 1961\u003cbr\u003e\nBuick Electra Base 1962\u003cbr\u003e\nBuick Electra Base 1963\u003cbr\u003e\nBuick Electra Base 1964\u003cbr\u003e\nBuick Electra Base 1965\u003cbr\u003e\nBuick Electra Base 1966\u003cbr\u003e\nBuick Electra Custom 1966\u003cbr\u003e\nBuick Estate Wagon Base 1959\u003cbr\u003e\nBuick Estate Wagon Base 1960\u003cbr\u003e\nBuick Estate Wagon Base 1961\u003cbr\u003e\nBuick Estate Wagon Base 1962\u003cbr\u003e\nBuick Estate Wagon Base 1963\u003cbr\u003e\nBuick Estate Wagon Base 1964\u003cbr\u003e\nBuick Gran Sport Base 1965\u003cbr\u003e\nBuick Gran Sport Base 1966\u003cbr\u003e\nBuick Invicta Base 1959\u003cbr\u003e\nBuick Invicta Base 1960\u003cbr\u003e\nBuick Invicta Base 1961\u003cbr\u003e\nBuick Invicta Base 1962\u003cbr\u003e\nBuick Invicta Base 1963\u003cbr\u003e\nBuick LeSabre Base 1959\u003cbr\u003e\nBuick LeSabre Base 1960\u003cbr\u003e\nBuick LeSabre Base 1961\u003cbr\u003e\nBuick LeSabre Base 1962\u003cbr\u003e\nBuick LeSabre Base 1963\u003cbr\u003e\nBuick LeSabre Base 1964\u003cbr\u003e\nBuick Limited Base 1958\u003cbr\u003e\nBuick Riviera Base 1963\u003cbr\u003e\nBuick Riviera Base 1964\u003cbr\u003e\nBuick Riviera Base 1965\u003cbr\u003e\nBuick Riviera Base 1966\u003cbr\u003e\nBuick Riviera Gran Sport 1965\u003cbr\u003e\nBuick Riviera Gran Sport 1966\u003cbr\u003e\nBuick Roadmaster 75 1957\u003cbr\u003e\nBuick Roadmaster Base 1957\u003cbr\u003e\nBuick Roadmaster Base 1958\u003cbr\u003e\nBuick Skylark Base 1965\u003cbr\u003e\nBuick Skylark Base 1966\u003cbr\u003e\nBuick Special Base 1957\u003cbr\u003e\nBuick Special Base 1958\u003cbr\u003e\nBuick Super Base 1957\u003cbr\u003e\nBuick Super Base 1958\u003cbr\u003e\nBuick Wildcat Base 1962\u003cbr\u003e\nBuick Wildcat Base 1963\u003cbr\u003e\nBuick Wildcat Base 1964\u003cbr\u003e\nBuick Wildcat Base 1965\u003cbr\u003e\nBuick Wildcat Base 1966\u003cbr\u003e\nBuick Wildcat Custom 1965\u003cbr\u003e\nBuick Wildcat Custom 1966\u003cbr\u003e\nBuick Wildcat Deluxe 1965\u003cbr\u003e\nBuick Wildcat Gran Sport 1966","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":55148372787505,"sku":"4395070","price":350.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0990\/2247\/1473\/files\/3a213f0581ff480ba1fb54c159f6787d.jpg?v=1783571874","url":"https:\/\/shop.topspeedcincy.com\/products\/comp-cams-91-602-5-big-mutha-thumpr-227-241-hydraulic-flat-cam-for-buick-364-425-nailhead-engines","provider":"Top Speed Cincy Shop","version":"1.0","type":"link"}