80LS1T Posted March 4, 2003 Share Posted March 4, 2003 Ok well just took down the short block today on my 93 LT1. Here' my questions.... Since I am updating to the 95+ optispark I am also going to use a standard double roller timing chain set,{[edit] electric water pump and LT4 "hotcam"}...What do I need to plug off on the block, timing cover, and water pump? Also what do you guys use for this? Also how much can the LT1 flywheel be machined? I machined mine today but I had to take off a lot of metal to get it flat! I had to tak off about .050! I really don't want to buy a $200 flywheel! If I have to where is the cheapest place to get one??? Thanks! Guy Quote Link to comment Share on other sites More sharing options...
Mike C Posted March 4, 2003 Share Posted March 4, 2003 You cannot use a standard double roller if you are going to keep the camshaft driven waterpump. If you use the newer optispark, you have to have the newer cam with longer dowel as well. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted March 5, 2003 Author Share Posted March 5, 2003 Ok let me rephrase the questions... I am updating my 93 LT1 to the 95+ vented style, putting in a CSI electric water pump, and using a Cloyes Double Roller Timing Chain set... now what do I need to do to plug off the timing chain cover, water pump housing, and is there anyting I have to do to the block??? And how much can I take off the flywheel when resurfacing it? I had to take off .050" to get it flat! There does that help??? Guy Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted March 5, 2003 Share Posted March 5, 2003 you water pum pshould have come with a freeze plug to block of the back of the water pump. usually u just let the water pump shaft fromt the time cover just sit there, but it you going to go double roller you will tahe the drive it self out of the block and you can go to a part store nad pick up a freeze plug for the timing cover. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted March 5, 2003 Author Share Posted March 5, 2003 Hmmmmm I will have to check on that freeze plug for the water pump housing? I don't remember seeing one in the box? But it could be there! Also what do you guys use to plug off that extra pipe coming out of the water pump? I think its the one that goes to the TB? All I need is the heater inlet and outlet right!? Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted March 5, 2003 Share Posted March 5, 2003 i know for sure the mezier pumps come with the freeze plug. as for he extra pipe i guessing your talkng bout the one boiut 3/4" in size on the left side and that one needs to go to the radiator, on the left side with your big radaitor hose its a bypass. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted March 5, 2003 Author Share Posted March 5, 2003 Ok I checked and I do have that freeze plug in the box for the water pump! Just need to figure out how to plug that timing cover! Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Guest Big Phil Posted March 5, 2003 Share Posted March 5, 2003 I just did the CSI water pump conversion on my LT1. My CSI kit came with freeze plug. If your plug is missing, the instructions will tell you what size plug you need. The freeze plug closes the cam driven impeller opening. You have to insert one or the pump will leak water thru the weep hole (located at bottom of the pump). The entire conversion took a couple of hours because you have to get all the bearings and the impeller wheel pressed out. You also have to file the inside of the water pump casing before the CSI assembly will slide in. Quote Link to comment Share on other sites More sharing options...
Danno74Z Posted March 6, 2003 Share Posted March 6, 2003 I found a site that may help you with the install of your CSI pump. This fellow installed a Meziere Pump, but the process should be exactly the same. I would heed his recommendation on using a relay with your WP. http://www.projecttransam.com/projects9.asp Danno74Z Quote Link to comment Share on other sites More sharing options...
80LS1T Posted March 7, 2003 Author Share Posted March 7, 2003 Ok I got the old parts of the pump out (impellor, seals, bearings, etc). That was really easy with the 55 ton hydraulic press! It only took like 5 minutes! Now I just have to file the housing down and put in that freeze plug! Should be easy. As for a relay... yes I am going to use a relay. I am going to also use a relay for my fan that has a manual control and a temperature activated switch. Thanks for the help guys! Guy Quote Link to comment Share on other sites More sharing options...
80LS1T Posted March 10, 2003 Author Share Posted March 10, 2003 Well if you ask me that water pump was a really easy conversion! It only took about 45 minutes to do, total time! 5 minutes to press out old impellor, bearings and seals... 40 minutes to put in freeze plug, and grind the casing so that the CSI pump fits! Thanks for all the help guys! Guy Quote Link to comment Share on other sites More sharing options...
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