What heads on a 70 LS5? - CorvetteForum Casting Number 3964280 1966-70 427 454 Closed Chamber Oval Port 335, 385, 390, 400, 345, 360, 390 LS-5 This should be the heads on your car but I still recommend pulling a valve cover to make sure This link shows the casting numbers and applications: http: www nastyz28 com bbcmenu php
454 ls5 heads cam - Team Chevelle The correct heads for your year LS-5 would be #3999241 On a side note it takes an honest 400 HP (and a properly set up ride) to run an 11 9 at 3900# These are "nominal" numbers
GM LS Cylinder Head Cross Reference - XtremeCFM We've tried to boil down the GM part numbers, casting numbers and other LS cylinder head information into an easily usable (and ideally definitive) cross reference Note that we're not perfect and some of this data may not be perfect so use it for what you will
OEM bbc heads - Chevy Tri Five Forum 3964280 1966-70 427 454 Closed 335, 385, 390, 400 LS-5 3964290 1969-70 396 402 427 454 Closed 109cc 325, 330, 350 400 ls-5 3965198 1969 396 truck 3975950 1968-70 366 427 Closed truck 3986133 1970-85 366 427 Closed truck 3986135 1969-73 366 427 Open 3986136 1970-84 366 427 Closed truck 3993820 1971 402 454 Open 113cc 300, 330 LS
HIGH-PERFORMANCE GM LS-SERIES CYLINDER HEAD GUIDE - Allied Motor Parts The LS heads meant for bolting up LS engines were lightweight, compact yet powerful Despite being an economically viable option, LS heads provide maximum output and are prevalent in 2023 H1 tags: LS Heads - High-Performance GM LS-Series Cylinder Head Guide
1970 Chevelle Engine ID Codes Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes
Correct head castings for a 1972 LS5 - Team Chevelle The "Catalog of Chevelle, Malibu, El Camino ID Numbers" lists 241's as correct for 402's and 454's, but no mention of 292's, which is exactly opposite of what you see in the "Red Book " There is a member selling 292's in the classifieds as LS-5 heads
LS5 1971 head - Twin City Outlaws Forum Those heads are from the Vette Chevelle LS-5 units We've done a number of these over the years, and still do today, on our 100%stock-appearing builds Factory valve size, 2 060" 1 720", on our builds we use some SBC intakes,2 150" x 343" stems, and stay with the 1 720" exhausts