WebMay 3, 2024 · 353 Posts. #3 · Nov 9, 2011 (Edited) The L31 Vortec 350 that was installed in all GM half ton trucks (Pick-ups, Tahoes, Suburbans, Vans) put out 255 hp and 330 lb-ft. Whoever told you 430-450 ftlb of torque was off by 100 lb-ft. 600 lb-ft is possible but very expensive with a small block. If you want the motor to live a long life plan on ... WebOct 14, 2024 · The 350 itself saw declining numbers. The LT-1 reached a peak of 370 hp in 1970, before the L65 cratered out at 145 hp from 1973-1975. In 1975, the highest output Chevy 350 engine was the LM1 at a measly 155 hp. Really, the only small block Chevy 350 engines capable of any performance were the LT-1, ZQ3, and L82s.
10 Cheap Small-Block Chevy Crate Engines Under $5,000
WebLike all small block V-8 engines produced since 1986, the SP350/357 engine has a 3.00” diameter flywheel flange bolt pattern. Small block V-8 engines produced from 1958 through 1985 had a 3.58” diameter flywheel flange bolt pattern. This change in bolt circle diameter was made to accommodate a leak-resistant one-piece rear main seal. WebThe HT383E crate engine from GM Performance Parts is an exciting new extension of our ""High Torque"" line that is especially designed for your 1996-1999 full-sized GM pickup trucks and SUVs. ... The HT383E is designed to replace the L31 5.7-liter engine in half-ton models of the Silverado, Suburban, Tahoe, Sierra and Yukon. Simply swap the ... henry 45 colt lever action review
Engine Information L31 Vortec? Hot Rod Forum
WebMay 21, 2024 · I'd go with this GM cam used in the new 357hp crate engine from GM Performance Parts. It's the highest lift most aggressive cam you can get for the GEN 1-E Vortec 350 rpo L31 that will work with the OEM valve springs and L31 cylinder heads. Basically a 4 bolt Vortec 350 with a roller cam. 357 HP @5500 RPM. 407 LB-FT @4000 … WebFor drop-in performance, shop for short block, long block, and fully dressed crate engines at Summit Racing Equipment. Stock up on Stock Replacement Parts! Vehicle/Engine Search Vehicle/Engine Search ... Crate Engine, GM 5.3L, LM7, 385 HP, Long Block, Internal Engine Balance, Aluminum Heads, Each. Part Number: HPE-HP97. 4.92 out of … WebThis 383 stroker is designed for use in 1996 - 2000 Chevrolet Pick up or SUV that was originally equipped with a 350ci (5.7L) engine. No ECU tuning or recalibration is required. Advertised horsepower gains were … henry 45 colt x model