355 Still Leaking Need Some Help Here!!!!
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From: anchorage ak
Well, 383 is easier to make power with, but depending on your goals and intended use it may not be nessicerry. If the crank needs replaced, I would definitely stroke it out to a 3.75" stroke crank, if your not shooting for more than 400 horse and you don't need a new crank then I'd bore and hone the cylinders, put new pistons in. Find out if the builder is going to bore and hone. Ask what piston cylinder clearance is.
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From: Kansas
Builder is talking complete rebuild. But if its a 355 already it cant be built to a 355 again correct? you have to go up to re-bore right? They do have a 383 at the shop making 550hp that we are discussing swapping out for. My 355 makes about 100 less hp. I thought a 377 was a high reving torque monster but thats running on dirt for powering through the corners at high RPMs.
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From: Hermosa
Builder is talking complete rebuild. But if its a 355 already it cant be built to a 355 again correct?
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From: Kansas
How muhc more in parts to go from a 355 to a 383? Builder said that they are going to take care of everything as this is no fault of mine. I would assume the only thing that would stay the same would be the block everything else would have to be replaced.
Le Mans Master
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From: Hermosa
The CR will go up with the 3.75" stroke so either the heads or the pistons might need to be changed to keep CR from getting too high. Rings of course would be changed.
Cam could be reused.
Intake could be reused.
If externally balanced then flex plate and balancer will be changed.
Block would have to be clearanced for the 3.75" stroke.
Maybe a windage screen/tray and a different pan for a 383.
The bores are still 4.030" on a 383. So if the bore is capable of being kept at 4.030" on this current block all the 383 stuff would be an additional cost.
Builder is offering to absorb these costs?
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From: Kansas
Ok thats about what I figured it would be.
At this point it obvious that I have blow-by and to much pressure in the crankcase. But as mentioned I am having other issues as well such as starting, over heating and the engine bogging down which I am pretty sure are all inter-twined at this point. When i get on the gas it bogs itself right out almost to the point of stalling. Smash the gas and it revs spits and putters then tries to die out. They are going to check the carb first to see if thats the issue as I assume the rings have washed out. My oil level rising def points to gas in the oil. Also have rising temps on the car to.
Builder stated that they are going to check that then pull the engine and re-build. If they cant redo the 355 then yes they re-build and I wont have to pay for it. But we have not discussed moving to a 383. I can only assume that I would have no other options if they cant do the 355 given trashed cylinders.
At this point it obvious that I have blow-by and to much pressure in the crankcase. But as mentioned I am having other issues as well such as starting, over heating and the engine bogging down which I am pretty sure are all inter-twined at this point. When i get on the gas it bogs itself right out almost to the point of stalling. Smash the gas and it revs spits and putters then tries to die out. They are going to check the carb first to see if thats the issue as I assume the rings have washed out. My oil level rising def points to gas in the oil. Also have rising temps on the car to.
Builder stated that they are going to check that then pull the engine and re-build. If they cant redo the 355 then yes they re-build and I wont have to pay for it. But we have not discussed moving to a 383. I can only assume that I would have no other options if they cant do the 355 given trashed cylinders.
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From: anchorage ak
It definitely sucks, do you have an invoice as to what your builder did to the 355" when he built it? I'm not trying to slander, but if the cylinders were bored and honed from 4.00" to 4.030" then you shouldn't have had issues with your rings seating. Even though mine took a little while, I didn't have near the bloody your describing. Maybe a ring broke?
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From: Kansas
I don't have the build sheet from the engine. I don't think I had issues with them seating as much as I did having them wash out. The carb is not functioning correctly and keeps trying to flood the engine. One time when I was getting on it last week I did hear something let loose and clanked it way through the exhaust....ring....maybe. At this point I am thinking complete rebuild. Given how much I have had to travel to get this right and how man issues I have had I am going to ask for a cam or heads upgrade for free seeing I have dropped almost a grand taking this car back and forth.
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From: anchorage ak
I don't have the build sheet from the engine. I don't think I had issues with them seating as much as I did having them wash out. The carb is not functioning correctly and keeps trying to flood the engine. One time when I was getting on it last week I did hear something let loose and clanked it way through the exhaust....ring....maybe. At this point I am thinking complete rebuild. Given how much I have had to travel to get this right and how man issues I have had I am going to ask for a cam or heads upgrade for free seeing I have dropped almost a grand taking this car back and forth.
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From: Kansas
First start she fires right up. Second start after running the car it will not start....or will be very very hard to turn over. Starter is a mini hi torque 15:1 cranks all day long but car is hard to fire. Then when driving the car and you get on it it revs up and the Boggs out as if it's starved for fuel. Like you mash the gas the RPMs come up to 3K and then there is nothing. Boggs out and tries to stall. Does not happen every time but still often.
Safety Car
Joined: Jan 2009
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From: anchorage ak
First start she fires right up. Second start after running the car it will not start....or will be very very hard to turn over. Starter is a mini hi torque 15:1 cranks all day long but car is hard to fire. Then when driving the car and you get on it it revs up and the Boggs out as if it's starved for fuel. Like you mash the gas the RPMs come up to 3K and then there is nothing. Boggs out and tries to stall. Does not happen every time but still often.
Safety Car
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From: anchorage ak
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
Thread Starter
Pro
Joined: Feb 2014
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From: Kansas
If sound is what your after, flowmasters have that. From what I 've read they don't flow as well. I do love the sound my flow masters make. But a change in the future to a higher flowing muffler is in the plans.
Anyways have you heard of Hooker Aeromax mufflers.....those sound stupid awesome, beat magnaflow by 2hp and crush flows by 8hp. Statements like that normally end with "Hey honey you seen my check book"
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From: anchorage ak
I hadn't I'll have to check them out.