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Forum: Pontiac - Street 07-28-2022, 01:45 PM
Replies: 76
Views: 9,270
Posted By ekancler
Not much back from Butler on their 557...

Not much back from Butler on their 557 balance/build: "We do not balance in any different way. We recommend limiting the RPM to 5500."
Forum: Pontiac - Street 07-27-2022, 11:30 PM
Replies: 76
Views: 9,270
Posted By ekancler
That's an awesome thread Jay. It seems like you...

That's an awesome thread Jay. It seems like you know all the tricks to get more power out of the 557 blocks. This from Post #19 stood out.

This is my thoughts on power output on the weaker late...
Forum: Pontiac - Street 07-27-2022, 04:45 PM
Replies: 76
Views: 9,270
Posted By ekancler
The post about Butler's #557 is pretty...

The post about Butler's #557 is pretty reassuring. They probably wouldn't sell/advertise it this way if they didn't have confidence in the product...

Butler claims "Complete Internally Balanced...
Forum: Pontiac - Street 07-27-2022, 01:51 PM
Replies: 76
Views: 9,270
Posted By ekancler
I'm in the same boat. Although I don't have sunk...

I'm in the same boat. Although I don't have sunk engine costs. But I did purchase a car that I hoped to do a numbers matching rebuild on. Which isn't nothing! If I had an easy replacement, say a #988...
Forum: Pontiac - Street 07-27-2022, 12:39 PM
Replies: 76
Views: 9,270
Posted By ekancler
One other question about these 557 blocks. (I've...

One other question about these 557 blocks. (I've got one in a numbers matching W72 T/A why I'm asking). What elements of creating more power are hardest on these engines? For example, increasing...
Forum: Pontiac - Street 06-24-2022, 01:36 PM
Replies: 95
Views: 18,807
Posted By ekancler
Did you read the rest of my post? It answers your...

Did you read the rest of my post? It answers your question.
Forum: Pontiac - Street 06-22-2022, 12:10 PM
Replies: 95
Views: 18,807
Posted By ekancler
There seems to be differing opinions/experiences...

There seems to be differing opinions/experiences on whether a wider Lsa, all else equal, will start to outcompete a tighter Lsa cam at the highest RPMs.

Yes, wider Lsa is more efficient and...
Forum: Pontiac - Street 06-22-2022, 12:04 PM
Replies: 95
Views: 18,807
Posted By ekancler
Alas, no variable valve timing for us. Not to get...

Alas, no variable valve timing for us. Not to get sidetracked... but Rhoads lifters are a clever solution, and I gather very well made, but apparently tricky to tune just right to minimize clicking....
Forum: Pontiac - Street 05-31-2022, 11:12 PM
Replies: 18
Views: 4,153
Posted By ekancler
Good point. I was thinking maybe a couple bolts...

Good point. I was thinking maybe a couple bolts and maybe a few more turns.
Showing results 1 to 9 of 9

 
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