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08-17-2010, 07:56 PM
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#1 |
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Registered User
Join Date: Oct 2008
Location: Hermsiton, Oregon
Posts: 100
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Dyno numbers
Well I finally got a chance to get on the dyno and considering what all has been done to it the numbers are very respectable. Had a local shop strap it down and give me a few runs.
Put down 252.7HP and 320.2TQ at the wheels. Not bad with a set of port and polished 305 heads!!! Got my aluminum ones coming soon along with the new cam. They estimated the engine to have 350HP and 420TQ after adding up all the factors. Not bad for a $900 build!!! The pickup is a 70 3/4ton with a 355SB and TH350 running 33" tires in the back and 4.56 gearing. Oh and it went from 40mph to 110mph in 6.2 seconds!! Thomas Last edited by sav300; 08-17-2010 at 07:58 PM. |
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08-17-2010, 10:47 PM
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#2 |
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Registered User
Join Date: Aug 2007
Location: West Hills, California
Posts: 679
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Re: Dyno numbers
Good numbers! Did they do any adjustment? I really like chassis dyno. True readings compare to inflated engine only dyno. Congrats.
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08-17-2010, 11:31 PM
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#3 |
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Registered User
Join Date: Nov 2009
Location: stoddard nh
Posts: 693
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Re: Dyno numbers
nice! whats been done to motor? im guessing headers and exhaust maybe compression? is that a stock cam? what u hoping for with new heads and cam?
__________________
1972 gmc c25 292/sm465 dana 60 w/5.13s 1973 vw super beetle 1600cc/4spd(baja bug) 1974 chevy c60 351v6/np-540+2 speed eaton rear 2005 chevy cobalt 2.2l |
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08-18-2010, 12:40 AM
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#4 |
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Registered User
Join Date: Oct 2008
Location: Hermsiton, Oregon
Posts: 100
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Re: Dyno numbers
The motor specs are:
Bored .030 over Scat 6" forged rods KB pistons(9.8:1CPR) Edelbrock performer cam Edelbrock Performer Air gap intake Comp Cams 1.6 Roller rockers MSD Billet distributor Single 16" Electric fan Port and polished stock 305 heads taken to 67cc chambers Hooker headers to 2 1/2" exhaust & Flowtech Afterburner mufflers. With the new heads and cam I'm hoping to hit 325HP & 450TQ at the wheels. Might upgrade to an electric water pump and some under driven pulleys after the head and cam swap to see what gains, if any, are attainable. |
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08-18-2010, 12:43 AM
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#5 | |
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Registered User
Join Date: Oct 2008
Location: Hermsiton, Oregon
Posts: 100
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Re: Dyno numbers
Quote:
Thomas |
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08-18-2010, 01:36 AM
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#6 |
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Big Red - Now its a SWB!
Join Date: Jun 2009
Location: Oroville, Ca
Posts: 1,624
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Re: Dyno numbers
Good numbers from that setup, what cam are you swapping to?
__________________
68 3/4 ton  (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged  build thread41 3/4 ton (wife's)-flatbed, fully restored to original01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's |
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08-18-2010, 11:02 PM
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#7 | |
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Registered User
Join Date: Oct 2008
Location: Hermsiton, Oregon
Posts: 100
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Re: Dyno numbers
Quote:
Thomas |
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