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Forum: Pontiac - Street 03-31-2023, 08:14 AM
Replies: 23
Views: 2,788
Posted By Half-Inch Stud
Duration is figured by a handheld calculator huh...

Duration is figured by a handheld calculator huh (on that screen).
Forum: Pontiac - Street 03-30-2023, 05:52 PM
Replies: 23
Views: 2,788
Posted By Half-Inch Stud
So 106-108 Sim appears moot. I don't know if...

So 106-108 Sim appears moot. I don't know if DeskDrawyer Dyno has accuracy with LSA. Working the Dur up at 106 vs 108, vs 112 might reveal some resilience vs Falling off across RPM
Forum: Pontiac - Street 03-30-2023, 08:43 AM
Replies: 23
Views: 2,788
Posted By Half-Inch Stud
Posting to compare my Signature with; 8.8:1...

Posting to compare my Signature with; 8.8:1 SD-455 with a HYD-Roller 230/236 @ 112 LSA. So I can see. I'll keep the flat tappets !

Seems a move to a 230/236 may help my combo's Cold-Idle and...
Forum: Pontiac - Street 03-29-2023, 08:53 AM
Replies: 23
Views: 2,788
Posted By Half-Inch Stud
Meanwhile the Calc by David Vizard will advize a...

Meanwhile the Calc by David Vizard will advize a 106 LSA or even lower for 9.5:1. He insists.

LSA = 128 - ( 455/8 / 2.11 * 0.91 ) for 10.5:1,

You can move a degree lower for 9.5:1, a...
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