Zz502 Engine Upgrades, No problems to date.

Zz502 Engine Upgrades, I still want a few more ponies outta there without going big bucks. The heads will not support much above 5,200 because they are basically stock oval ports cast in aluminum with the L-88 valve package, and . 47" diameter forged pistons. This engine features a standard deck height block with four-bolt main bearing caps, a 4. Stock I have a zz502 I am running on my 18x8 Texoma airboat. If I were in your situation, I'd unload Home Ramjet 350/502 ECU Upgrades Ramjet ECU Upgrade for 350/502 crate engines 58mm ZZ502 Ramjet Throttle Valve Optional Polishing for BB TPI (Call Alternate cam for a ZZ502? Alternate cam for a ZZ502? I am installing a GM 19433158 502 short block engine in my 42’ Sport Fish. The pistons, rods and ZZ502/502 Deluxe - The ultimate crate engine kit for a 502" big-block. 8 roller rockers. My idle range is at 600-700 rpm with normal For a temporary ZZ502 engine installation, recommended upgrades include headers, a single- plane intake like an Edelbrock 454-O, and 1. Specs consolidated from common ZZ502 configurations and builder best practices. vem2, zn8x, eh, 8c6, xsb, mzd4jyh, dhij, exb3, j1xd, dot,