305 to 350
- Thread starter kdubs482
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yea you can use it from a 92 just gotta get a vortec intake so your carb bolts up otherwise its the same
'92 doesn't have Vortec heads, those started in '96. Only major difference if you keep the '92 TBI heads is the inner two bolts on each head aren't at a 90º to the intake mating surface. You could buy an intake with the holes drilled at the correct angle, some guys just lengthen the holes on their current intake. The TBI heads are good for torque down low, but are pretty much done by 4,000RPM in stock form.
Far as 305 350, any year will work, but there are certain things to consider. '87+ 1-piece rear main seal blocks use a different flywheel (which has a bolt pattern different from a pre-'87), but besides that everything bolts up just fine.
Far as 305 350, any year will work, but there are certain things to consider. '87+ 1-piece rear main seal blocks use a different flywheel (which has a bolt pattern different from a pre-'87), but besides that everything bolts up just fine.
One of the best things about GM and the reason I have always liked them is the interchangeability with the small block and even big block engines. Trans bell housing never changed from the very first small block up to todays LSx engines. Only a few things that will make things complicated that I have run into in the past. Using an older style cylinder head may not always have the holes drilled for the accessories, different flywheel sizes and minor things like that.
About the worst thing that ever bit me on a motor swap was when I built the 400ci for my 68 camaro. The car was a 4 speed manual so I had the old 327 flywheel balanced for it, drilled the starter location to accept the one for the 327. Thought I had everything covered. Put the engine in the car, bolted up the trans, and then when I went to hook up the clutch linkage, I found out I forgot something. The boss where the pivot ball for the clutch was never drilled out.
About the worst thing that ever bit me on a motor swap was when I built the 400ci for my 68 camaro. The car was a 4 speed manual so I had the old 327 flywheel balanced for it, drilled the starter location to accept the one for the 327. Thought I had everything covered. Put the engine in the car, bolted up the trans, and then when I went to hook up the clutch linkage, I found out I forgot something. The boss where the pivot ball for the clutch was never drilled out.
Doober said:
1 the bolt pattern for the "vortech" started in 86-87 its a missnomer the intake bolt pattern is from 85-86 to 98 so i was doing the whole blanket and no you cant just elongate the holes ( thats just the wrong way to do it)
the fly wheel yes it is different as far as the bolt pattern on the crank but it is the ring gear is the same number of teeth (need to count the teeth for your starter unless it came with the motor)
the torque conveter bolt pattern is the same as a earlier model so thats not gonna be a problem
you may need to get a bronze distributor gear if you get a 5.7 with a roller cam
Ok fine, spot face the holes... point is you can make a standard intake fit an '87-'95 head. Even if you drilled/tapped the holes on a Vortec head, the port shape is different and you would have to heavily port the intake to get them even close to matching, and most of the time you won't have enough surface at the top of the runner mating surface on the intake to get a good seal.
YOu can use any 350 block..........try to find a mid 80's though, this way you won't have to dick around with heads, intakes and what not..................
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