305 or 350
08-16-2009, 07:09 PM
#1
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305 or 350
so guys i need to know. if someone told you they were selling you a car with a 350 not the stock 305 whats the best way to tell the difference. save actually finding the motor numbers
Last edited by 88birdform; 08-16-2009 at 07:12 PM.
08-16-2009, 09:52 PM
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Car: 1984 Chevy K5 Blazer
Engine: SD TPI 350 w/FIC Bosch IIIs
Transmission: 700R4 4X4
Axle/Gears: 3.08 front and rear w/ 33" AT tires
Re: 305 or 350
Numbers on the heads maybe? Receipts? Numbers on the motor is thebest way... if they have a problem with you getting the #s off the engine... Id say dont buy it...
08-16-2009, 10:06 PM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: 305 or 350
The ONLY way to know for sure is to get the numbers off the block - they are driver side, back end of block, on the top - impossible to see almost. There is no other way.
08-16-2009, 10:12 PM
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Car: 84 camaro, 88 trans am, 98 camaro
Engine: Modded , stock, LSX modded
Transmission: 700r4, 700r4, t-56
Axle/Gears: 327, 308, 373
Re: 305 or 350
and if they dont know what a casting is or where to find it then wow dont even give that car or its owner a 2nd thought. . .
08-16-2009, 11:11 PM
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08-17-2009, 08:52 AM
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Car: 1984 Chevy K5 Blazer
Engine: SD TPI 350 w/FIC Bosch IIIs
Transmission: 700R4 4X4
Axle/Gears: 3.08 front and rear w/ 33" AT tires
Re: 305 or 350
Maybe... get a little mirror and LED light... IDK??? LOL Ask him to bust his *** if he really wants to sell it to you and pull the damn thing out and get the #s like that.. HAHA
08-18-2009, 07:29 PM
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Re: 305 or 350
good advice from all. but i already bought the car. i dont mind even if it is 305 i just need to know for my restoration. to ease everyones mind i only paid 950 for a running and it passed inspection, firebird
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08-18-2009, 07:37 PM
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Car: 1984 Chevy K5 Blazer
Engine: SD TPI 350 w/FIC Bosch IIIs
Transmission: 700R4 4X4
Axle/Gears: 3.08 front and rear w/ 33" AT tires
Re: 305 or 350
Well thats good.. as long as you are happy... 305 and 350 parts are semi interchangable.. what do you need to restore on the engine?
08-19-2009, 11:02 PM
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Car: 1992 RS
Engine: 305 TBI
Transmission: Stock, Auto
Re: 305 or 350
The block definatley is the only way to tell if the current motor is a 350, however you can run the vin through the decoder here and see what was originally put in it.
08-20-2009, 12:52 AM
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08-24-2009, 08:47 PM
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: 305 or 350
okay what you do is make sure cylinder #1 is at BDC pull the rockers off of cylinder #1 then jack the driverside way up into the air i mean way up and fill the cylinder with 50W oil put the plug back in and then jack up the passenger side and have a measuring can ready pull the plug and catch it all in the can turn the engine over to get as much oil as you can out then just do the math...
08-24-2009, 08:48 PM
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: 305 or 350
or get a flashlight and mirror /camera if you need to take a bagillion pics and start comparing
08-26-2009, 01:21 AM
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Car: 1995 Formula
Engine: LT1 350
Transmission: Built 4L60e
Axle/Gears: 10 bolt, Eaton posi, 3.73's
Re: 305 or 350
Best wishes finding it on the BACK of the block..try a mirror...that might work.
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