Need engine advice N A 598 cubic inch rebuild
10-02-2016 | 08:07 PM
#151
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From: Moscow OH.
Rob as you know it died a violent death September 2015 after the first rebuild. Took it back to the builder he found a stuck lifter it only had 12 hours he stood behind his work and rebuilt it again.
It is running fine was actually out today I think its getting close to 30 hours for the year. New rebuilt outdrive this year also so hopefully good for awhile.
It is running fine was actually out today I think its getting close to 30 hours for the year. New rebuilt outdrive this year also so hopefully good for awhile.
09-05-2023 | 11:12 PM
#153
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Joined: Oct 2000
Posts: 4,541
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From: Western Michigan
Yessir, 9.8 to 1, 89 octane, similar sized cam to what you're running, maybe a hair smaller. 2000cfm throttle body, Holley efi intake. It was a low rpm deal, made 770hp. I built a 600" with AFR 305's last year. I wouldn't try to argue with anyone that those are the right heads for a 600" motor, but it worked really well for it's application, and the throttle response was nothing short of violent. It made 705hp and 740 tq through a set of Dana's. I do a lot of engines for big white water jet boats that have a very narrow efficient rpm range so I experiment a lot with different combos. When the pump manufacturers are designing new impellers, they use a shaft dyno to calculate the KW absorption of the impeller. My dyno numbers always match the numbers in the boat. The 357's are a killer head, and a perfect match for a 598 if, in my opinion, you were shooting for 850-900hp. I was just saying that on an engine that mild, I couldn't see spending the money on them. I'd go with cheaper heads and buy shaft rockers instead. 
https://youtube.com/watch?v=I1XC7qqFY9E
https://youtube.com/watch?v=I1XC7qqFY9E
