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By 55blacktie - 3 Years Ago
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Phil, didn't you say that you're running the Isky 301333? I know the LSA is 112; however, I've not seen the cam card. Overlap? Does your 55 Tbird have power brakes? Someone I know is building a 312/w target of 300 HP. I told him he'll probably need 228 degrees duration @ .050 to get there/w G heads, but he has power brakes. I'm thinking the 112 LSA of the 301333 will provide enough vacuum for his brakes.
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By Florida_Phil - 3 Years Ago
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I have run both the Isky 301333 and 301444 camshafts in my Y-Blocks. The 301444 is what I believe most people call the E-4 camshaft and it's fairly mild. I am not a cam tech, so all I can comment on is my perception. I have never run power brakes in any of my Y-Block cars, so I have no personal knowledge of that combination. I suspect the 301444 would work OK with power brakes. The 301333 is a different animal. It has a noticeably more ragged idle. It's been some time since I put a vacummn gauge on my engine. As I remember, it holds about 14 pounds at idle. Isky told me the 301333 will work with an automatic transmission. I am not so sure. Possibly if you had a loose converter? If you put this cam in a heavy car with a lot of accessories, I think you would be asking for trouble. My car is light, no P/S or P/B with a manual transmission and 4.1 gears. My little Tbird is a hot rod, so I love the sound and performance of the 301333. Mid range torque is awesome.
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By 55blacktie - 3 Years Ago
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Thanks, Phil.
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