Review on LS Engine Valve Spring Compressor Tool Compatible with Chevy LSX Camaro, Corvette, Trans Am, GTO, G8, CTSV, GM Trucks - Fits 4.8L, 5.3L, 5.7L, 6.0L, 6.2L LS1, LS2, LS3, LS6 by Charles Barney

Multiple issues with this item not clear in the description. . It is machined to fit 3/8" toggle bolts. I was able to machine the parts to fit 7/16" bolts which led me to the following problem. (2 ) [MAIN PROBLEM] Parts are milled to fit cylinder heads that are held by studs and not studs My SBC 350 Gen 1 stud ARPs (ARP234-4301) stick out too high interfering with the aluminum base and steel T -Pieces. Show me the stopper. (3) [SMALL PROBLEM] The part that covers the valve spring OD retainer fits 1.00" sizes, but my AFR Eliminator 180 heads are 1.380". Photos and description do not clarify these problems. Study this tool carefully if you decide to buy it. In the end I couldn't use it. According to other reviews it looks like this. Works well on stock heads with studs. Processing = good