5.3 LM7 Swap/Build Questions
05-03-2017, 05:28 PM
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5.3 LM7 Swap/Build Questions I am beginning an LS swap. I aquired a 5.3 LM7 and TH400 Trans for the project. I have the complete engine. Wiring harness, computer, accessories etc. Im building the engine first before building my wiring harness. Im going to build it to run N/A until its in and I have all the swap bugs worked out then putting a pair of turbos on it. The one biggest question i have is do I have it bored to 3.905 and put ls1 pistons in it. Will i see enough of a gain to justify 1500+ in machining and parts. Im thinking I will make more than enough power with turbos. I have access to a tuner to help tune it. Ive already been told the stock 5.3 bottom end will hold the power im planning on. Any input would be greatly appreciated. Thanks.
05-05-2017, 05:51 PM
#2
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I am beginning an LS swap. I aquired a 5.3 LM7 and TH400 Trans for the project. I have the complete engine. Wiring harness, computer, accessories etc. Im building the engine first before building my wiring harness. Im going to build it to run N/A until its in and I have all the swap bugs worked out then putting a pair of turbos on it. The one biggest question i have is do I have it bored to 3.905 and put ls1 pistons in it. Will i see enough of a gain to justify 1500+ in machining and parts. Im thinking I will make more than enough power with turbos. I have access to a tuner to help tune it. Ive already been told the stock 5.3 bottom end will hold the power im planning on. Any input would be greatly appreciated. Thanks.
05-05-2017, 06:20 PM
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what do you recommend for ring gaps. Another thing I noticed I have 862 heads and they have the notch. Anyway to use mls gaskets without welding the heads or getting different ones?
