Isky vs. 731 Cam?

Reply Subscribe

Thread Tools

11-27-2021 | 08:57 AM

#21

getrdunn

Registered

Joined: Feb 2009

Posts: 8,356

Likes: 1,515

From: NW Michigan

Quote:

Originally Posted by Prowler

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.

11-27-2021 | 10:00 AM

#22

Prowler

Charter Member #1472

Joined: Mar 2001

Posts: 315

Likes: 8

From: upstate NY USA

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.

11-27-2021 | 06:32 PM

#23

Griff

Charter Member # 55

Joined: Oct 2000

Posts: 20,241

Likes: 2,490

From: Omaha/LOTO

Quote:

Originally Posted by Prowler

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.