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    Jegs vortec heads

    I assembled my motor and was about to install it in the boat when I came across a YouTube video regarding cylinder heads for marine , castheads.com. My question is , do I need to replace my exhaust valves with inconel or equivalent valves? I believe the valves are standard type. I have a stock...
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    Gel coat vs Epoxy paint

    Hello all, I am going to tackle the bottom hull this spring and paint or gel coat it. My boat will sit on the trailer most of the time. I will repair the hull scrapes and gouges from days gone past. I was going to order a 5 gallon pail of white spray gel coat but then saw the Interlux epoxy...
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    push rod length 5.7L roller cam

    Well I went with the Vortec heads as suggested. They are Jegs cast iron. Now I checked my piston to valve clearance along with the push rod length with my adjustable push rod. Now I had Moroso valve checking springs in with my hydraulic roller lifters. I was going with 7.205 push rods. Deck...
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    Just a final check on outdrive choice

    Ok , i am ready for my out drive. I have an Alpha 1 gen 2 gimbal . 1991 era. It has been suggested before that I go with a 1.64:1 mated to my 5.7l. I can get a 1.81:1 for an excellent price. Would I be sacrificing anything other than a few mph on the top end? Thanks, Carlos
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    Intake port cc question for 5.7l sbc

    I was all set.....Ordered a set of Jegs vortec heads and intake. Then the might as well hit. I cancelled the order. I am now wanting to get a set of Dart Iron Eagle heads. They offer a 165cc intake port and 72cc combustion chamber. This would put me at 9.68:1. This is where I get confused , or...
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    5.7l carburetor choices

    Ok , I ordered JEG vortec heads 514080 and aluminum intake 513002 for my 355 build. Block is a 92 5.7l marine cam 14097395 . The cfm flow for my motor is 436cfm according to the calculator. That seems a little low. I have seen the 1409 by Edelbrock recommended . What Holly would be good ? My...
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    Compression ratio 5.7l

    What would be the safest compression ratio for a 355cid with factory roller cam. 1995 . 0F786416 Block is 0 decked . No i did not do a stroker 383 . Too much cost and work to the block. Next boat I will do it though ;) Thanks, Carlos
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    Eagle , Scat rod question

    I am at the point of deciding on either re-using my old PM rods or buying new forged steel rods. It has been suggested not to waste money on reconditioning my old rods , when new rods are about the same money. I can purchase a bore dial gauge to measure my old rods for out of roundness. But is...
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    connecting rod bolts

    When putting on new pistons , do most of you put new ARP rod bolts? Therefore having to resize the rod. One of my machinist's recommends checking the rod and resizing if needed , but not changing the bolts unless it is for high performance.
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    5.0l vs 5.7l

    Is there a mark able difference in torque and performance between a 1987 305 (230) and a 350 both carb'ed ? I just got gifted a 1995 350 . F786416 . the block and one head are done.
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    How to test for spark without cranking engine ?

    Is it possible to test my Thunderbolt IV without cranking engine? I went to start the engine and found my carb leaking. But had no fuel on plugs . I will rebuild the carb , but i think I should check my ignition also. I can't just crank the engine because of my new flat tappet cam. So I am at a...
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    Break in fresh built mercruiser 230 out of boat

    Since I don't have my out drive yet, I was thinking to break in my flat tappet cam on land. I have built an engine test stand. Just going to order some electrical gauges . The carb was rebuilt also , so I am not sure what to set the idle mixture screws at. I know I have to run the engine at 2000...
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    Paint on head exhaust ports

    just want to ask if the majority removes the paint on the head exhaust ports before they bolt the manifolds on with a gasket? The shop that did my heads painted them , along with the head. Not the intake side. These are v8 305 heads. Thanks, Carl
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    Alpha one Gen II upper steering bushing

    I am rebuilding my gimbal assembly and have a question. When I took the upper steering pivot apart , there was no grease in the top bushing housing. Should I pack this area with grease when rebuilt with new bushing? There is no grease zerk like the Gen 1 . My serial number is 0D753918 . Carl
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    SEI outdrive question

    Hi All, I am pondering between purchasing a new SEI 116 drive or a rebuilt Mercruiser drive. The 2 will cost the same roughly . My question is are the SEI drives good with a 230hp 5.0l engine? I am looking at 1.47 ratio. My gimbal housing is alpha 1 gen 2. The dealer told me that it had a 1.81...
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    5.0l exhaust manifold Mercruiser interchangeability

    Are the exhaust manifolds interchangeable on 2000 and 1986 5.0l Mercruiser engines?
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    Alpha 1 gen 2 Studs

    I have an Alpha 1 gen 2 bell housing and gimbal . I am sure it was not original on my boat . The boat has 8 holes in the transom. The gimbal has 6 studs. My question is should I order the other 2 studs for the unit , or just install it as is.
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    Advice on transom , stringers and floor rebuild

    I am restoring a 1991 Sunray Prelude 20 footer. I have used epoxy to glue the plywood panels together for the transom. I am not sure of what to laminate the transom back in the boat with. Epoxy is what I would like to use as it is the strongest , but it is expensive if I will have to do the...
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