update new upgrade for my 95 gt new trickflow 11r heads Well I havent posted in a while, car has been the same for many years havent had the money$ or time to upgrade it much, just fixing issues coming up. I have been back and forth to do a blower or stroker, but I rather keep it all motor, well I finally saved some $ and bit the bullet, I've been eyeing trickflows new updated twisted wedge heads, the new 11r series, I bought a nice set of twisted wedge 190cc heads with 56c chambers, I currently have a set of the old trickflow tw 170cc heads, these should be a nice upgrade, the new heads seem to make about 30-50 hp across the board and average horsepower gain, I dont think it will be much peak horsepower gain being I already made 361rwhp out of my current n/a 306 setup. I had a set of stage 1 hand ported cleaned up 170cc heads with high rev valve springs. upgraded to these. otherwise the setup will stay the same. these heads on a stock 302 seem to make around 335-350rwhp. and a built motor 350-380rwhp. wish I had the $ to do a stroker. but the old 306 will have to do. (stroker setups are seeing around 400-450rwhp, these and the 205/225cc versions are seeing 500-650+hp on engine dynos so they are making some steam for all motor setups, But I know this is really slow compared to all these modern coyote cars and blown 03 cobras / shelbys and 500-1000+rwhp cars of today. lol 306 c.i (bored .30 over hyper speed pro flat top pistons) around 10 to 1 compression stock block / bottom end / rods. trickflow 170cc tw heads 61c chambers stage 1 hand port cleaned up gasket matched to lower intake. ed curtis high rev valve lsx style valve springs. trickflow track heat intake ported lower gasket matched 75mm tb 30lb injectors 255lb fuel pump. cai comp cams xe274 hr cam ( .112 lobe idle, 224/232 .555/.565 lift.) bbk long tubes bbk x pipe slp catback .373 gears full bolt ons etc. new heads trickflow 11r heads 190cc .56 chambers (should up the compression to 11to1 ) So anybody interested I will have my old set of trickflow heads up for sale soon $850+shipping.