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03 z06...looking to either port and polish factory 243s or get BTR trick flow 220s (twice the price)...thoughts? Car currently has btr stage 4 cam, longtubes, b&b exhaust, vararam intake. I still have a fast 102 and nick williams 102 to put on as well.
i will also be spraying a 100-150 shot depending if i go standalone fuel system or not.
Hey buddy did you get heads.
we a gettng a 370" 6.0 .030over for my buddy 03z ls6 took a poop.
we are gonna use prc 225 heads.
go with a ms4/btr4/polluter style cam.
hope to make about 510tire with fast intake ls3/7 maf 1 7/8 headers
FWIW, I had BTR stage 4 and ported 243's and dyno'd 400whp and 375wtq. Put on TF 220s and dyno'd 450whp and 410wtq.
local guy has btr3 cam, tsp prc ported 243s, made 471 on the tuners dyno and 463 on a different dyno. He has the msd intake also.
Also my buddies car 03z we put baby 222/226 115+3 cam, c6z manifolds and midpipe to stock exhaust, made 409.
I'm a big fan of the mast small bore heads.... 11* valve angle is hard to argue with and Im a bit biased.. Cary Choinard and I went to high school together. LOL!
Buddy just purchased a pkg deal, new in boxes, lifters gaskets whatnot, vengance ported 92, ls2 tb ,prc 225 heads and ms4 cam, not a fan of the ms4 lobes valve events are cool tho. Gonna try to sell the cam then get a custom grind around the ms4/btr4/streetsweeper/polluter. Building a iron 370" 6.0 around 11.5-8 compression. Excited
Not 243s but had AI do my 241s, put down 456/420 on a dyno jet with a fast 92, 1 3/4 headers(catted) and a 223/235 113 cam. Id send the 243 to AI. I think if I ported the ls2 TB, fast and decatted id pick up 10-15 as well, I think that is some hella good port work IMO.