305 and 350 connecting rods - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 11-27-2002, 09:26 AM Thread Starter
 
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305 and 350 connecting rods

Are 305 and 350 rods the same? im not just talking length but also in strength or are they weaker? i have a set of 305 rods sitting under the bench i would rather use in my 400 than ripping apart a 350 for just its rods. Im not looking for huge horsepower (300~) so the strain on them wont be to bad.
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post #2 of (permalink) Old 11-27-2002, 04:07 PM
Stroked72blazer
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Re: 305 and 350 connecting rods

They are the same part # on most applications and should be sufficiant for 300-400HP. Just to be safe have them magnufluxed then have the rotating assembly balanced.

Why are you doing this anyway? Do yo have offset pistons or are you trying to raise compression.
post #3 of (permalink) Old 11-27-2002, 04:12 PM Thread Starter
 
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Re: 305 and 350 connecting rods

That was my plan. Thanks. Im going to use the longer rods so i can have a better rod/stroke ratio to prevent excessive sideloading of the pistons.This way less force will be exerted on the skirt preventing wear over the 5.565" rods. And i have a set of 5.7 inch rods, and i only have 6 400 rods (2 were screwed).
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post #4 of (permalink) Old 11-28-2002, 09:19 PM
Stroked72blazer
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Re: 305 and 350 connecting rods

You better replace your pistons with some with a proper deck hight. you need to raise the pin inside the piston or you wiil put your piston into your heads. High speed collisions in your motor can suck. Look at those 305 connecting rods to see if they have an X stamped into them. If so then they are some of the best factory rods made and most race builders look for these rods when limited by class to factory parts.
post #5 of (permalink) Old 11-29-2002, 06:38 PM Thread Starter
 
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Re: 305 and 350 connecting rods

I am getting the proper pistons for the 5.7 rods,I do know what happens whe the piston hits the head, i do know its bad, im not a rookie, done a few 350s up, just never a 400, and theres quite a few differences that i have to learn before i can proceed.
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