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And that engine WOULD respond to bigger cams like the LT4 HotCam because it had enough flow capacity to support making power higher up the RPM range.Īnd finally, GM built the ZZ383 which was those better FastBurn heads, a special cam (bigger even than the LT4 HotCam) and, of course, with 383ci of displacement underneath it instead of just 350. I dont have the specs on the cam but its over. You will need to change springs,keepers ect. I have a stock 1999 Vortec crate motor and Im going to put GMs HOT cam in there. Literally exactly the same as the ZZ4 but with different heads on top. Sallee Chey board has a lot of great info on Cams and the Vortec heads. Worked well enough they sold it the next year as it's own crate motor called the FastBurn 385 (indicating it's HP, not it's displacement). That picked up 30HP and 7 ft/lbs of torque with no change to the cam. They also had a package where they swapped the stock ZZ4 heads for a set of FastBurn heads. It made 3 extra ponies and lost 2 ft/lbs of torque. One package was a ZZ4 that they installed the LT4 HotCam into. Here's the summary straight from the guys who designed and built the ZZ4. has no torque below 3000 then its a rocket. i had a gm hot cam and i donot like the drivability of this camshaft. Hot Rod 350 Chevy Small Block V8 Camshaft and Lifter Kits in-stock with same-day shipping.
#Gm hot cam 350 free
Bolt on a set of Vortec iron heads and a GM Performance Parts HOT hydraulic roller cam. Shop Hot Rod 350 Chevy Small Block V8 Camshaft and Lifter Kits and get Free Shipping on orders over 99 at Speedway Motors, the Racing and Rodding Specialists. i have a 1998 350 vortec motor vin r thaqt is supposed to have roughly 9.4:1 compression. out this combo: Start with a late-model roller cam 350ci block. That’s less lift on the intake side than the stock LS3 cam, but considerably more duration, allowing the valves to stay open longer to draw in more air from the rectangular-port L92-style heads. 954481 - 12/07/12 05:33 PM 350 vortec cam question Joined: Mar 2007 Posts: 212 my427cid Member my427cid Member Joined: Mar 2007 Posts: 212 racine wi-good morning. GM offered "power packages" for the ZZ4 in their catalog (maybe still do?). soundclip of GMs 'hot cam' Jump to Latest Follow 1 - 4 of 4 Posts. The key to the power boost is the Hot Cam’s 0.525-inch lift on both the intake and exhaust sides, along with 219-degree/228-degree duration specs. It's not easy to swap cams and pick up a pile of easy ponies. The ZZ4 cam is REALLY well matched to the ZZ4 heads.