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#1 |
Registered Member
Join Date: Apr 2004
Location: germany
Posts: 7
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![]() Hello guys,
i tested my car the first time on a dyno last weekend. I built up this engine last winter. The engine should be a good streetable combo for my 67 fastback. Here the data: - 331 - scat cast crank - scat forged i beam - probe srs piston - 89 roller block - afr185 with 61cc - comp ratio 10.7:1 - ed curtis upgrade valve springs - ed curtis custom cam (build for torque in low to mid range) valve lift ex. .5632 int. .5728, duration ex. 228 int. 224 @.050, lobe 112* - comp pro magnum roller rockers - trickflow main girdle - 75mm pro-m mass air - 65mm ford racing tb - gt40 tubular upper, gt40 lower (light port matching) - custom cold air induction - 24lb injectors with 50 psi (27.5 lb) - hooker long tubes, no catalyst - 2.5 inch exhaust - off road h-pipe - flowmaster deltaflow 40 I make all my eec changes with the tweecer rt. Total timing was stock 26*, air fuel ratio @idle 14.7, @wot 12.8 Measured values: 370 PS flywheel (near your HP) @ 4700 rpm 420 lb-ft @ 4500 average power 233 PS average torque 321 lb-ft power loss @ 4700 rpm = 30 PS (manual transmission, tremec tko) what do you think about that numbers Max |
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#2 |
Registered Member
Join Date: Dec 2006
Location: new york
Posts: 482
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![]() it seems to be on the light side.i would have more timing than 26 unless u have a power adder
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's ![]() 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo |
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#3 |
Registered Member
Join Date: Dec 2006
Location: new york
Posts: 482
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![]() the only thing else that is hurting is the 185 heads with a 331 would make more power in the upper end and less in the lower i would have went with a bigger cam making power to 6000-6500
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's ![]() 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo |
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#4 |
Registered Member
Join Date: May 1999
Posts: 5,246
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![]() The GT-40 Intake will be the first restriction to higher rpm performance. It looks like a good, healthy combination to me.
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#5 | |
Registered Member
Join Date: Apr 2004
Location: germany
Posts: 7
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![]() Quote:
Like i said, this was the first dyno session without playing around with ignition and fuel delivery. But i was surprised with the relatively high torque. thank you guys Markus |
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#6 |
Registered Member
Join Date: Dec 2006
Location: new york
Posts: 482
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![]() naww if u were looking to have a low to mid power like u have u should have went with the 165 heads.yea the intake would be restrictive but it will run to 5500 all day.u would have made better low end numbers with the smaller head i mean come on do the math 4700 rpm with a head that runs past 7000 on a 347.
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's ![]() 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo |
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