speedmaster 96mm intake manifold swap thread
#22
god i hate porting, covered in aluminum shavings. Finished shaping and matching all the port entrys in the manifold, and finished smoothly the walls of the exits. Need to cartridge roll the insides and smooth them out, and then finish up all 8 on that one side with 320 and crossbuffs.
#26
Awesome thread so far! I ordered one last Friday and it won't be in until next Tuesday. Not really sure why it's taking them 11 days to get it to me. I am putting it on an 05 corvette that I am rebuilding. I got it at a salvage auction for a good deal. I will be polishing the intake runners and putting it on. The car has a 220/228 cam, home ported and polished heads, a .040 head gasket, LS7 exhaust manifolds, and a vararam intake. It will probably be a couple months before I get it tuned though. I'm going to do the body work and get it street legal before I get the tune and find out what it makes. Looking forward to see how yours works out for you.
#31
Well the cam can certainly support a 90mm tb, so thats why i opted for the 4 bolt opening, that and just because it doesnt require an adapter to mount it. Ill be using the LS3 throttle body, i dont have it yet but thats what im going to be getting as its significantly cheaper then the LS2 not to mention a better design.
#34
http://store.katechengines.com/oil-p...take-p148.aspx
I use air tools to do the porting. I have a high speed air grinder from lowes and various chucks to fit different style bits. Im using a long shank aluminum burr for the hard to reach areas that need heavy cutting, and a 20 dollar pack of catridge rolls and arbors from harbor freight. Comes with 80-120 rolls and various shapes, spiral and straight. Not really trying to reshape or remove material in the runners by the port openings, only reshaping and heavy cutting im doing is on the inner part of the manifold where the runners take in air from the plenum. There's alot of rough cast protruding in those areas, so im blending them to have smooth transitions around the curves.
#37
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what fuel rails are u gonna use spawn?this thing looks tall don't think ours will work,I'm gonna follow your lead on this project,the discription says aftermarket fuel rails so we shall see
#38
http://www.ebay.com/itm/LS-Gen-4-Valley-Pan-Cover-Plate-Low-Profile-Carb-Lifter-LSX-LS3-DOD-Delete-55164-/131578184042?vxp=mtr
im going to test fit the stock rail using FAST injector hats (extenders) and a set of spacers and see if it will clear the middle of the runners. Worst case scenario a set of holley efi LS1/6 fuel rails will do the job just fine, they sell them as a kit for about 100-120.
#39
ok i seen those holly ones i put them in cart on amazon just in case,i guess u could get 2 feet of 1/4 in hollow bar and cut them to size but don't know if that will look clean enough,maybe polished alum tor stainless stock, let me know and love the pics which really helps me as i HAVE TO see it to get it lol