292 SR1 with 1250HP
#24
Registered
Joined: Oct 2002
Posts: 263
Likes: 11
From: nowhere
My 89 272 ran 84mph with 650hp 540's.
late model bravo 1's @5600 RPM.
bravo 1 props/Hydromotive 27's labbed.
Mopower ran 85/86mph same setup.
292SR-1 should run close to/or a bit better numbers. Hull is better balanced than 272. 272 was very short and butt heavy for BBC setups.
once you get past 78-80 the Hull is above stabilization pads. 3"flat section at outer most of V bottom.
so it will chine walk a bit.
if it gets to walking, let off throttle enough to stabilize Hull, then throttle up.
OR
drop a trim tab enough to lay Hull on one side of V to stabilize it.
then raise tab as you get past chine walk
late model bravo 1's @5600 RPM.
bravo 1 props/Hydromotive 27's labbed.
Mopower ran 85/86mph same setup.
292SR-1 should run close to/or a bit better numbers. Hull is better balanced than 272. 272 was very short and butt heavy for BBC setups.
once you get past 78-80 the Hull is above stabilization pads. 3"flat section at outer most of V bottom.
so it will chine walk a bit.
if it gets to walking, let off throttle enough to stabilize Hull, then throttle up.
OR
drop a trim tab enough to lay Hull on one side of V to stabilize it.
then raise tab as you get past chine walk
#27
How the hell did I miss this thread?!
Eager to see the finished product. I have similar builds, 509s, AFR heads, etc.
Can you upload pics of the notch? A few of us know a guy in NJ with a notched-transom 311. Engines are also raised to change the X-dimension. The boat runs in the mid 90s with 625 a side (might be 650 a side).
Eager to see the finished product. I have similar builds, 509s, AFR heads, etc.
Can you upload pics of the notch? A few of us know a guy in NJ with a notched-transom 311. Engines are also raised to change the X-dimension. The boat runs in the mid 90s with 625 a side (might be 650 a side).
#30
Registered

Joined: Nov 2004
Posts: 14,177
Likes: 3,731
From: On A Dirt Floor
How the hell did I miss this thread?!
Eager to see the finished product. I have similar builds, 509s, AFR heads, etc.
Can you upload pics of the notch? A few of us know a guy in NJ with a notched-transom 311. Engines are also raised to change the X-dimension. The boat runs in the mid 90s with 625 a side (might be 650 a side).
Eager to see the finished product. I have similar builds, 509s, AFR heads, etc.
Can you upload pics of the notch? A few of us know a guy in NJ with a notched-transom 311. Engines are also raised to change the X-dimension. The boat runs in the mid 90s with 625 a side (might be 650 a side).
He was from NJ and twin 540's but forgot what size Formula.
















