I know alot of the part's off the old 305 will fit on the new crate GM 350 but will they be reliable things like the : starter, flywheel, fuel pump,harmonicbalencer , and 350 tranny witch by the way was completly rebuilt?
Sure, more worried about the fact the crate 350 came with no harm-balencer will the one off the 305 work and there is also no timing marker. Not looking forward to popping the head to find t-d-c! suggestions?
Damon I have an 82 chevy that I changed the 305 with a 350. I used everything from the 350. Everything should be the same except for the exhaust, the 305 right side head rear exhaust port has three holes the 350 only has two. I used a set of edlebrock shorty headers that actually fir a 98 suburban, they look good.
To find top dead center, remove the number one plug, or all of them to make it easier to turn by hand. Take an old spark plug and break of the electrode and drill and tap it for a 5/16 or 3/8 bolt, cut the head of the bolt off, screw it into the plug, screw it into the number one hole.
Rotate engine until piston touches, make a reference mark, rotate engine opposite direction until piston touches again, make a reference mark. Measure the distance between the two marks and half way between the marks should be top dead center.
To find TDC I just turn it over by hand with the 1st plug out.When ya can feel the piston on the top of the bore with a small screw driver wile both valves for that cylinder are shut your at TDC.This will get ya close enough to put the distributor on #1.
The starter and flexplate may be differant.Allot of 350s had the stagered starter head and 168 tooth flexplate.Allot of 305s had a strate pattern starter head and 153 tooth flexplate.
The 305 balancer will be OK I've done it on my own motors.Just make sure its in good shape no rubber hangin out or ring sliding off.
[ February 12, 2003: Message edited by: 78 monte ]</p>
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