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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Isky vs. 731 Cam? (https://www.offshoreonly.com/forums/general-q/374043-isky-vs-731-cam.html)

getrdunn 11-27-2021 08:57 AM
Originally Posted by Prowler (Post 4813489)
i had a 731 in a 509, 5400 rpm fell flat, put a 741 in and 6000 no problem. cams were installed straight up. had a 420 mega-blower on it also with Bassett headers. 731 had a very mild idle, 741 had a nice choppy idle. And still idle at 800 rpm's just my 2 cents.
Would imagine you were getting 300 + more rpm with the blower.

Prowler 11-27-2021 10:00 AM
don't know, i've pretty much always had a blower motor, every time going bigger. now i'm up to a 598 w/a 1071. this is the first engine i've bought that i didn't assemble. so far, so good.

Griff 11-27-2021 06:32 PM
Originally Posted by Prowler (Post 4813489)
i had a 731 in a 509, 5400 rpm fell flat, put a 741 in and 6000 no problem. cams were installed straight up. had a 420 mega-blower on it also with Bassett headers. 731 had a very mild idle, 741 had a nice choppy idle. And still idle at 800 rpm's just my 2 cents.
That is because you had the 731 a 509ci. 731 is very close to 500efi cam so 5400rpms makes sense.
The 731 in his 467ci engine should pull hard to about 5800rpms.

jdf4068 11-27-2021 09:08 PM
We run the comp cam 284…..no issues with rev..


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