maybe your heads are to big and your cam is to big, killing your upper midrange torque?

540 CI AFR325's cam is 241/246 681/663 112, 9.6:1 compression single plane with 1050 carbs (4150) style, did not dyno but results in boat were no gains, so I really and trying to see whats wrong with the combo, I was assured easily 680++ hp and TQ, my old ones were 598 hp and 663TQ so I am baffled.. I am just getting specs from different combos from guys that seemed like success...

Nice numbers, what exhaust are you running? Dry tails?

1987 sonic 36 ss. Trs drives 25 mirage plus , davis distributor, stainles marine exhaust wet, 76 at 5300. Crossover, blocked bypass, no thermostat on water, 15 / 18 psi, water temp 100 / 120 max, been 83 with 4 blade hyd q4 s 27p , but rpm 4700, broke prop shaft and housing.
Uses 60 gallons on 78 mile non stop 3/4 full the whole way. Best thing motors were cheap and dont run hot or so much as tick. 7/8 fuel pressure. Holley pump nmechanical. The carbs were 1200 each but well worth it

No wet , stainless marine. Not cheap but imho not power robbers

I got a 2 inch spacer as well merc 500 bulldog flame supressor air filter thing was worth 10 more hp believe that ****

How thick is the head gasket ? Builder might have fuk d you on compression I'm that way just cause I been there.
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Original dyno sheet bro. All I did was lifters and took out 060 head gasket and comp was like 7.6. Picked up 130 +

What drives you runnin

Hey Tim.
Is that compression ratio a theoretical or an actual measured number? It doesn't take much area to change the ratio.
I'm not trying to bust your balls, but maybe your down on compression.
You said your cylinder PSI was on the lower side, no?

Going from a .060 head gasket to a .040 head gasket changes the compression 3/10ths of one point on a typical 540, if you were at 7.6-1 you would now be at 7.9-1 so IF your at 9.6-1 now you were actually at 9.3-1 before, the 3/10ths of one point is worth about: 5 to 10 hp MAX at the 675 hp level, not 130 so you had other issues you overcame such as the lifters you mention
"Wallace racing": your old Compression Ratio of 9.3-1 and HP of 675 is now calculated
as a Compression Ratio of 9.6-1 and 680.92 Horsepower.
http://wallaceracing.com/hp-cr-chg.php