Guest JAMIE T Posted February 12, 2002 Share Posted February 12, 2002 I am going to replace the cam in my 351W with a milder cam. I was wondering if someone with the desktop dyno ability could give me a ball park hp for my engine. The engine is a 357cid ford. specs: 4.030 bore stock length Eagle rods stock cast steel crank DSS forged flat top pistons(two deep valve releifs) Edelbrock Victor Jr. heads 320/245 cfm intake/exhaust @28h2o at .600 lift, ported by Fox Lake 60cc combustion chambers/ yeilds @11.1 compression with flat top piston Edelbrock Victor Jr. intake, ported to match heads New cam: Comp cams XR286R extreme energy mechanical roller cam 286/292 dur. intake/exhaust .614/.621 lift intake/exhaust 1.6 ratio Comp roller rockers Holley 950HP carb. If you need further specs, please let me know. This engine is a hot street engine, limited street use. NOT intended to be driven daily or get good fuel economy. This thing is going in front of a Tremec 5spd, so a high stall converter is not needed. The old cam has over .700 lift and tons of duration(but also a solid roller). I feel like I can get better response and lower RPM power with the new cam... Also, assuming traction, what ET and MPH would you give this engine/trans(trust me, I can shift it) in a 2200lb car/driver. Oh yeah, the intake is plumbed with a Pro Shot Fogger, we don't need to count that though Quote Link to comment Share on other sites More sharing options...
Kevin Shasteen Posted February 12, 2002 Share Posted February 12, 2002 If I did it remotely close/correct your engine w/the new cam should be in the 470-503HP range in the 5500rpm to 7000rpm range and maximum torque entering the picture at 5500rpms at 450ft.lbs. This is/was w/your new choice of camshaft-not the old cam and using Dyno 2000. I didnt use the airflow file as I dont have those numbers but in the Cyl.Head selection I chose "Wedge/Fully Ported Large Valves & the size of the valves were In:2.02 Ex:1.65. I also chose Small Tube Headers....didnt know what your exhaust system was/so that should get you in the ballpark. Kevin (Yea,Still an Inliner) Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted February 13, 2002 Share Posted February 13, 2002 Thanks Kevin, The engine originaly used 1 7/8" primary, 3 1/2" collectors header. My brother sold the headers when he decided to build a Cobra replica, so I will need to fab some with correct tube sizes and length. Also, the heads have 2.05"-1.60" valves, and have been severely ported by Fox Lake. On the motor this engine made well over 500hp at the wheels with the old cam. I suspect the power figures to be lower than previous, but still respectfull. Quote Link to comment Share on other sites More sharing options...
pparaska Posted February 15, 2002 Share Posted February 15, 2002 I found head flow numbers for those heads (unported and ported) at: http://thevl.com/venom/Vic%20Jr%20Flow%20Numbers.htm Using the "roller lifter" option in DD2000: rpm------hp-------ft lbs-------BMEP 2000 128.530716 337.393158 144.484024 2500 169.182816 355.283905 152.145493 3000 215.396591 376.944031 161.421158 3500 277.683228 416.524841 178.371094 4000 343.215607 450.470490 192.907852 4500 412.024048 480.694702 205.850967 5000 471.118530 494.674469 211.837616 5500 517.757080 494.222687 211.644135 6000 551.165161 482.269531 206.525375 6500 571.276550 461.415680 197.594971 7000 563.393616 422.545227 180.949234 7500 558.521606 390.965118 167.425491 8000 532.521912 349.467499 149.654709 Using the solid option: rpm------hp-------ft lbs-------BMEP 2000 123.433113 324.011902 138.753693 2500 163.365417 343.067383 146.913940 3000 208.194473 364.340332 156.023804 3500 267.762756 401.644104 171.998627 4000 330.048157 433.188232 185.506958 4500 394.867371 460.678589 197.279327 5000 450.498413 473.023346 202.565811 5500 493.165619 470.748993 201.591858 6000 523.243835 457.838348 196.063049 6500 539.767639 435.966156 186.696564 7000 529.718384 397.288757 170.133499 7500 522.320129 365.624084 156.573532 8000 494.366119 324.427765 138.931778 (excuse all the digits, that's how the program spits it out for the NIRA game file - the quickets way I know to give the data) WOW! Either way (it's probably in between these results) that puppy is going to ROCK! Quote Link to comment Share on other sites More sharing options...
Guest RXO510 Posted February 28, 2002 Share Posted February 28, 2002 Can someone please give me an estimated hp, trq. on Gabe's motor please? 383 sbc,9.0 - 1 Holley 650 DP, Edelbrock RPM Performer intake mani, hyd cam and lifters: int dur. 274, int lift .487; exh dur 286, exh lift .490 lobe 110 valves 2.02 and 1.6. Block huggers dual 2.5" to an X pipe to a 3.5 " flowmaster 2 chamber. Yes it is very healthy sounding. Any changes or suggestions for different setups are very much appreciated. Please give us your opinions. Just want Gabe's Z with decent power and streetable. Also installing one power adder; NOS! later down the road. Thanks, James Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted March 1, 2002 Share Posted March 1, 2002 Can somebody help us out. We kind of want to know how my setup is running. Well actually I would like to know. Please help us. Thanks G Quote Link to comment Share on other sites More sharing options...
Tim240z Posted March 1, 2002 Share Posted March 1, 2002 James and Gabe, I think that this post is just going to get lost here. Post a new topic in the Chevy section, maybe calling GrumpyVette, he seems happy to run these figures for us and his 'hybrid' software application seems pretty accurate. Tim Quote Link to comment Share on other sites More sharing options...
Guest RXO510 Posted March 2, 2002 Share Posted March 2, 2002 Thanks Tim. Quote Link to comment Share on other sites More sharing options...
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