[jeclarke]

I have a Roush 427SR crate engine (510hp version) that I installed in my superformance cobra. I’m very familiar with the differences between the R and SR versions of the Roush engine.

I want to compare the horsepower and torque curves for these 2 engines. I’d like to see a copy of the Roush dyno sheet for the R version to compare to mine.

My engine is runnung great. No issues. I’m just curious to see the difference.

Can anyone provide the data I’m looking for?

Thanks!
John