Hello, I have 1996 Silverado XLT -w- a 305 "M" code engine and 4L60E tranny with 185,000+ miles. It has no leaks but uses about 1/2 quart every oil change. I figure at about 200,000 miles I might consider replacing the motor & rebuilding the tranny. I'd like to go up to a 5.7 Vortec and fix those issues often talked about with the 4L60E (I haven't had any trouble with mine). My question is, I have little information on the newer Bowtie or small block performance items or the Vortec line of block/heads. Is there a newer version of the old GM performance books I had back when I was building my 63 Biscayne or 57 Apache that can help me find the right 4 bolt block and high flow heads to rebuild for this? I don't want to go radical performance but I would like a little more power and dual exhaust with the shorty headers. I'd like to keep external appearance stock and only go larger on the injected port and the headers. Maybe a nice higher flow air cleaner. ME
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18 years ago