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73-87 Chevy _ GMC Trucks => Performance => Topic started by: 86SilveradoEric on November 12, 2003, 01:36:00 AM

Title: 1986 305 stock specs
Post by: 86SilveradoEric on November 12, 2003, 01:36:00 AM
I was curious if anyone here could tell me a site I could look at to get all the specs for my engine.  I was curious of the stock HP and torque and all the rest.

Title: 81
Post by: shaky bonez on March 13, 2004, 11:53:00 AM
im looking at getting an 81 and was wondering the same thing...

Title: 305
Post by: stepside454 on March 13, 2004, 11:59:00 AM
stock hp for 81 305 is 150@3800 RPMs for 8.5:1 305s  165 @4400 for 9.0:1 305s (most likely its a 8.5:1)
stock TQ is 240@2400 for both.
 specs for 86 is the same.

Title: 81
Post by: shaky bonez on March 13, 2004, 12:38:00 PM
thanks again there stepside!  

Title: what about a 350
Post by: 78chev2bnice on March 14, 2004, 12:59:00 PM
Anyone know what the HP rating would be for a 75 350.  I read somewhere that it was 155 but thats what it is for a 305.  So if anyone know please let me know.

Title: 350
Post by: stepside454 on March 14, 2004, 09:07:00 PM
I show 155 hp @ 3800 & 245 ft. lbs. of torque @ 2400 for 75 4 barrel 350

Title: HP rating
Post by: 78chev2bnice on March 15, 2004, 10:11:00 PM
Was that rating off the crank or was that done to the tires?  

Title: at the crank
Post by: stepside454 on March 19, 2004, 03:31:00 PM
thats at the crank