trying to post my dyno numbers for the 425 that Bob gsconv has now. think 6671 can post it for me I never knew how. this is back in 09-2009. the engine hp and the fuel ratio are not right,but the wheel hp and tq are.
thanks 6671:TU: 328.5 rear wheel divided by .82 = 400.6 engine hp and 414.4 tq divided by .82 = 505 torque. .82 is the 18% drive train loss. it had the Eelco 2x4 intake on it.
Joe, any specific details about this motor? Cam specs, flow numbers (or what was done to the heads), exhaust setup, etc? Those are some great numbers! :TU: Is your stroker going to be tested on the same chassis dyno?
thanks a lot Andy:grin:. yes same dyno this Thursday if no rain, like to change your guess on the stroker I know you want first prize lol. comp fast ramp xfi- ex 218-230 on a 110 LSA, 108 CL .those heads were stock size valves but ported. intake 210@.500cfm, 218 cfm@.600.. exhaust 132@.500, 136@.600. 1.6 roller rockers. ta- long tube headers with 2.5 in with x pipe and borla mufflers. je lighter pistons .028 over bore with a thinner rings and 9.8 comp. 182-185 cranking comp. thanks to Doug and the guys at Fingerlakes machine shop right here in auburn ny. same guys that did the stroker and had to put up with me on both motors lol. did a great job on boring and hone, likes to line hone his motors too. I know he likes to leave bearings and rod side clearances on the loose side. the 2x4 intake two 600 cfm carbs and smaller cam size made a good combo, smaller cam for bottom and the 2x4 helped mid upper end.
my goal was 400-500 never messed with jets or timing. the only change that was made was take off the two 6 inch x 2.5 paper air filters, that gave 9 hp more and 21 lbs of torque, believe it or not. forgot cam lift 501-490 I see Mark got the graph up. looks like a nice flat curve ?
That is a flat curve. Joe I know you posted somewhere that that car ran around 12.8 or so? pretty good considering 2 speed tranny and 3.23 gears. I really like the short block. When I added my upper end it really run good. I took it apart early spring for cam change and things. Gotta get off my a$% and get it back together:laugh:
Ok , getting off my a#$ now. Kinda boreing in the da nailhead section latly if you don't count gsgtx stroker and big pig blowing up his tranny all over the tunnel. I want to get to chassy dyno this summer and see how my upper end change does:Brow:
