Beginning my winter 5.3 turbo build...
10-31-2011, 12:33 PM
#1
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Beginning my winter 5.3 turbo build... Hello FI section!
I have been a long time member but just recently ventured over to the FI section. I have built a lot of h,c,i ls1 cars over the years. My last project was a 98 c5 with a 408 and d1sc. It was my first FI car. It is now gone and I am looking at doing a budget 5.3 lm7 turbo into my 1995 z28. I have a few questions after doing my endless hours of searching and reading up on everyone's build threads, which helped a lot. I have a ton of left over parts from all my builds. I am looking to get all my parts together and start a build. So far I am thinking stock junkyard 5.3 (bought for $100),stock heads with upgraded springs and pushroads,arp head studs,cometics head gaskets,ls1 intake manifold,60lbs injectors, dual 255's and a meth kit. Running a egay gt45 turbo looking for 8-10 psi. I know a lot of people are not high on this turbo, but this build is more about budget and left over parts. I would like to see how far I can get with all my left over parts and hand-me-down
My goal is 600whp. I have all these parts laying around the garage except the turbo piping and intercooler. I have a question concerning the head gaskets. I have .080 cometics head gaskets that came off the 408. With these gaskets on stock heads, how much compression would I lose? I would like to run these since they are better gaskets for boost, and I have them laying around. I know the bore size is bigger than the 5.3, will that make a difference? Also this may be a dumb question but could I mill the heads a little bit to compensate for the thicker head gaskets? Will I run the risk of "lifting" the heads with a smaller deck height? I know a lot more needs to be looked at but I am just now putting all my parts together and trying to see what I can use and what I can't. Any suggestions are welcome. Thanks
I have been a long time member but just recently ventured over to the FI section. I have built a lot of h,c,i ls1 cars over the years. My last project was a 98 c5 with a 408 and d1sc. It was my first FI car. It is now gone and I am looking at doing a budget 5.3 lm7 turbo into my 1995 z28. I have a few questions after doing my endless hours of searching and reading up on everyone's build threads, which helped a lot. I have a ton of left over parts from all my builds. I am looking to get all my parts together and start a build. So far I am thinking stock junkyard 5.3 (bought for $100),stock heads with upgraded springs and pushroads,arp head studs,cometics head gaskets,ls1 intake manifold,60lbs injectors, dual 255's and a meth kit. Running a egay gt45 turbo looking for 8-10 psi. I know a lot of people are not high on this turbo, but this build is more about budget and left over parts. I would like to see how far I can get with all my left over parts and hand-me-down
My goal is 600whp. I have all these parts laying around the garage except the turbo piping and intercooler. I have a question concerning the head gaskets. I have .080 cometics head gaskets that came off the 408. With these gaskets on stock heads, how much compression would I lose? I would like to run these since they are better gaskets for boost, and I have them laying around. I know the bore size is bigger than the 5.3, will that make a difference? Also this may be a dumb question but could I mill the heads a little bit to compensate for the thicker head gaskets? Will I run the risk of "lifting" the heads with a smaller deck height? I know a lot more needs to be looked at but I am just now putting all my parts together and trying to see what I can use and what I can't. Any suggestions are welcome. Thanks 
11-02-2011, 07:08 AM
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StrokerLS1,
I see you live in the "A", same here.
Do you have any good recommendations for an engine machine shop in town? I have a 5.3 I'm working on as well.
I see you live in the "A", same here.
Do you have any good recommendations for an engine machine shop in town? I have a 5.3 I'm working on as well.
11-03-2011, 10:07 AM
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True. Ill probably go that route. Would the bigger bore gaskets work with the smaller bore engine? Im guessing if all the cooling holes line up it wouldnt be a problem. Thanks for the advise!
11-05-2011, 09:40 AM
#6
