I am running the XE 274 in my 455 powered 4000 Lb 1977 TA. The cam produces good vac. And has nice Idle at 800 RPM. I can idle it even lower but idle gets a little rough in gear. Power is good from off idle to about 5500 rpm's. My engine is only running about 8.5-1 Compression, and I really like the cam. I am planning a head swap to get compression up to 10.0-1 and adding some better head flow numbers. Im really wondering how much more power I am going to be making by adding 1.5 more points of compression and some good flowing heads. Im just curious how the cam will perform with the added compression seeing as how its designed to function well with low compression. I may have a used XE 274 in a few months, If i decide that i would be better served with a larger cam due to the compression and head flow. Any one out there running a 4000lb car with an XE274 in a 10-1 compression 455??? If so what kinda times you putting down.
My TA ran 13.26@101 mph last time out, with fuel and timing issues, but pulled a 1.82 60' which isnt too bad for a 4000lb sled from what I understand. Should be in the 12s next time i hit the track, since i have corrected the fuel and timing issues.
Mike
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