Formula 233 1976 280 TRS Refit
08-28-2019, 11:46 PM
#12
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Thread Starter
Parasail,
I appreciate that option. It sounds like a good running package.
I'm looking into a Velvet drive & TRS complete that is local.
We'll see how that goes.
I was planning on staying small block, and alum heads. Maybe even an LS, but iron block.
Time will tell.
I appreciate that option. It sounds like a good running package.
I'm looking into a Velvet drive & TRS complete that is local.
We'll see how that goes.
I was planning on staying small block, and alum heads. Maybe even an LS, but iron block.
Time will tell.
08-28-2019, 11:52 PM
#13
Registered
Thread Starter
Managed to snag a bunch of TRS parts today, and almost all of the TRS Merc Tools.
A MercTrans II tool kit.
3X RH prop shafts, one that is new.
brand new TRS bell housing in box.
Merctrans II flywheel adapter
spare TRS water intake.
a box of new Merc v-belts.
A good day out.
A MercTrans II tool kit.
3X RH prop shafts, one that is new.
brand new TRS bell housing in box.
Merctrans II flywheel adapter
spare TRS water intake.
a box of new Merc v-belts.
A good day out.
Last edited by Tartilla; 08-29-2019 at 01:31 AM. Reason: Spelling
08-31-2019, 11:45 PM
#14
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Thread Starter
Getting 'er home.
Trailer axles scaled in 5777 lbs.
No fuel in tank. Complete engine and drive. 3x batts.
Tongue weight prob add 500 ish. So 6250 lbs total weight with trailer. About 1550 lbs trailer.
Puts the Hull ready to run less fuel, at 4700 lbs area.
100 gal US tank full is around 600 lbs.
5300 lbs ready to run....no people.
She needs to go on a diet....
09-02-2019, 10:00 AM
#15
Platinum Member
09-02-2019, 11:44 AM
#16
Registered
Thread Starter
I'm looking at some pretty big tq numbers from a big inch small block. Probably look for a max RPM of 5500. It let's the engine and drive breathe a little. As well as give a healthy RPM for some good potential cruise MPH and RPM.
The Merctrans with less low RPM tq will be better off.
The 280 TRS, that came on the boat, has a 14p prop.
My thoughts are to build for cruise efficiency, and then lay out a good foundation for a great top end.
Off the bat, with the 233, by all accounts liking speed, I thinking a 40 mph cruise is a good place to start. There will be a sweet spot for GPH, and MPG. I won't ignore those realities. I feel that the hull will perform better in the chop at 40, with some velocity to help the hull cut through.
I have a 355 with RHS Pro Torker heads that I built up a few years back, that I may throw in just to get some exposure to the hull and gather info.
Final solution would be minimum Aluminum heads, on a healthy small block, or LS. Looking for Min 450hp.
Adding weight is no problem, I'm pretty good at that. I'm thinking a 15hp kicker stored in a custom box in the bow, to start.
The Merctrans with less low RPM tq will be better off.
The 280 TRS, that came on the boat, has a 14p prop.
My thoughts are to build for cruise efficiency, and then lay out a good foundation for a great top end.
Off the bat, with the 233, by all accounts liking speed, I thinking a 40 mph cruise is a good place to start. There will be a sweet spot for GPH, and MPG. I won't ignore those realities. I feel that the hull will perform better in the chop at 40, with some velocity to help the hull cut through.
I have a 355 with RHS Pro Torker heads that I built up a few years back, that I may throw in just to get some exposure to the hull and gather info.
Final solution would be minimum Aluminum heads, on a healthy small block, or LS. Looking for Min 450hp.
Adding weight is no problem, I'm pretty good at that. I'm thinking a 15hp kicker stored in a custom box in the bow, to start.
08-16-2022, 09:05 PM
#17
Registered
Thread Starter
Post Covid project re-start!!!
Ended up taking some contracts during covid that pulled me away from the project.
Just getting fired up for the off season overhaul.
Was looking at a 400 SBC, but expensive to get the Dart SHP blocks up here.
Likely go 383 2pcs rear, 4 bolt. 3970010
450hp in the 5600 RPM area.
Likely won't push the WOT much.
Hoping to get a high speed cruise, 38-40 mph. 21p prop, low 3xxx RPM, high vacuum. I've read that the 233 hull likes speed to perform. Makes sense, deep vee etc.
Planning for EMI Thunder lowers, and fabricating stainless risers. There is enough in the transom area to put a crossover transverse stainless muffler system. We've used these before, and they really drop off the exhaust notes, whole providing some good flow into thru hull outlets.
I'll dry flow into the cross muffler, and feed the raw water into the muffler, enabling the 106LCA cam for the 383. (Reversion reduction)
Not sure if I'll fresh water cool the lower exh manifolds. Being aluminum, that would really be the better solution. The current exchanger on the 350 is a full fresh water cooled system...including exh man.
RHS heads, RHS Pro Torker 1.94/1.5. Minor porting
Performer EPS Vortec intake
Cam with 1.6 magnum rockers. Not sure om dur or lift. Thinking 227 In ish. Looking for high lift, shorter duration HR.
4150 850 Vac Sec carb
Scat 9000 stroker crank.
Scat stroker 7/16 5.7" or 6" Rods. Not sure yet...if I want to put the wrist pin into the oil rings.
DSS Forged Pistons D Dish
9.75:1 SCR (depending on cam) Vortec chambers use max 32*, enabling some decent compression. (190 PSI cranking)
Just getting fired up for the off season overhaul.
Was looking at a 400 SBC, but expensive to get the Dart SHP blocks up here.
Likely go 383 2pcs rear, 4 bolt. 3970010
450hp in the 5600 RPM area.
Likely won't push the WOT much.
Hoping to get a high speed cruise, 38-40 mph. 21p prop, low 3xxx RPM, high vacuum. I've read that the 233 hull likes speed to perform. Makes sense, deep vee etc.
Planning for EMI Thunder lowers, and fabricating stainless risers. There is enough in the transom area to put a crossover transverse stainless muffler system. We've used these before, and they really drop off the exhaust notes, whole providing some good flow into thru hull outlets.
I'll dry flow into the cross muffler, and feed the raw water into the muffler, enabling the 106LCA cam for the 383. (Reversion reduction)
Not sure if I'll fresh water cool the lower exh manifolds. Being aluminum, that would really be the better solution. The current exchanger on the 350 is a full fresh water cooled system...including exh man.
RHS heads, RHS Pro Torker 1.94/1.5. Minor porting
Performer EPS Vortec intake
Cam with 1.6 magnum rockers. Not sure om dur or lift. Thinking 227 In ish. Looking for high lift, shorter duration HR.
4150 850 Vac Sec carb
Scat 9000 stroker crank.
Scat stroker 7/16 5.7" or 6" Rods. Not sure yet...if I want to put the wrist pin into the oil rings.
DSS Forged Pistons D Dish
9.75:1 SCR (depending on cam) Vortec chambers use max 32*, enabling some decent compression. (190 PSI cranking)
