They are basically the same heads, If the 93 350 is a vortex motor.
If the pistons are hitting the crankshaft, either you have1. the wrong pistons (350 pistons are relatively short butit is possible to purchase pistons with the same bore but a longer skirt... in which case they would hit the crank)or2. the wrong crankshaft with too much "throw"
how much horse power does a stock 4.8 liter vortex Chevy engine have
Yes it will fit right in there with no problems.
what year did chevy come out with the vortex v6
I wouldn't be so worried about the heads as the pistons. Make sure you have enough clearance so that an open valve won't hit a piston.
In order to set the timing on a 98 Chevy 350 vortex, you have to time with a scan tool that will let you set timing. Or let garage do it
no.
307 pistons are 3.875" diameter. 305 pistons are 3.736". It might be possible to bore a 305 large enough to accept the 307 pistons, but the wrist pin location would be .230" off because of the different stroke. In short, no.
Pistons don't have bots. More information is needed.
no
The headers for a 350 and 305 are the same.
Late 96 to early 97 and on