Differences in 1986-1987 and up 350's?
02-26-2006, 03:19 PM
#1
Registered
Thread Starter
Join Date: Mar 2005
Location: West Chicago IL
Posts: 177
Likes: 0
Received 0 Likes
on
0 Posts
Differences in 1986-1987 and up 350's?
87' was the 1 piece rear main seal, and roller cam? Is that all? Im trying to figure out if I can use my balancer and flywheel from an 87 305 on an early 350 with 2 piece rear main. Any why does edelbrock offer 2 different performer intake if the only differences were roller cam and rear main seals?
I wish this boat had a big or small block ford in it. Same **** since 1969
I wish this boat had a big or small block ford in it. Same **** since 1969
02-26-2006, 06:47 PM
#3
Registered
Re: Differences in 1986-1987 and up 350's?
Woody,
If your 305 is a one piece rear main seal, you cannot use the flywheel on a 2 pc crankshaft. First of all, the bolt pattern is different, but more importantly, the one pc seal flywheels have a weight built into them and will throw a 2 pc seal crankshaft out of balance.
If your 305 is a one piece rear main seal, you cannot use the flywheel on a 2 pc crankshaft. First of all, the bolt pattern is different, but more importantly, the one pc seal flywheels have a weight built into them and will throw a 2 pc seal crankshaft out of balance.
02-26-2006, 08:43 PM
#6
Registered
Thread Starter
Join Date: Mar 2005
Location: West Chicago IL
Posts: 177
Likes: 0
Received 0 Likes
on
0 Posts
Re: Differences in 1986-1987 and up 350's?
Originally Posted by BillK
Woody,
If your 305 is a one piece rear main seal, you cannot use the flywheel on a 2 pc crankshaft. First of all, the bolt pattern is different, but more importantly, the one pc seal flywheels have a weight built into them and will throw a 2 pc seal crankshaft out of balance.
If your 305 is a one piece rear main seal, you cannot use the flywheel on a 2 pc crankshaft. First of all, the bolt pattern is different, but more importantly, the one pc seal flywheels have a weight built into them and will throw a 2 pc seal crankshaft out of balance.
02-26-2006, 10:18 PM
#7
I hate the winter!!
Platinum Member
Join Date: Jul 2001
Location: long island, new york
Posts: 2,707
Likes: 0
Received 0 Likes
on
0 Posts
Re: Differences in 1986-1987 and up 350's?
Woody,
I just remembered... I have a flywheel that came from a 1990 260 h.p. small block Merc motor that had a 1 piece seal. I can cut you a deal on it. If interested, I can send you a picture.
Vinny
I just remembered... I have a flywheel that came from a 1990 260 h.p. small block Merc motor that had a 1 piece seal. I can cut you a deal on it. If interested, I can send you a picture.
Vinny
02-26-2006, 10:25 PM
#8
Registered
Thread Starter
Join Date: Mar 2005
Location: West Chicago IL
Posts: 177
Likes: 0
Received 0 Likes
on
0 Posts
Re: Differences in 1986-1987 and up 350's?
Originally Posted by checkmate454mag
Woody,
I just remembered... I have a flywheel that came from a 1990 260 h.p. small block Merc motor that had a 1 piece seal. I can cut you a deal on it. If interested, I can send you a picture.
Vinny
I just remembered... I have a flywheel that came from a 1990 260 h.p. small block Merc motor that had a 1 piece seal. I can cut you a deal on it. If interested, I can send you a picture.
Vinny
02-27-2006, 05:46 AM
#9
Gold Member
Gold Member
Re: Differences in 1986-1987 and up 350's?
First, if your looking to upgrade a Merc built engine, they didn't use roller cams till sometime in 88. Even then depending on S/N it could still have a flat tappet cam. Roller cams were installed mid year in 88.
The differences in intakes is again depening on what heads were installed. The older heads had the center four bolts drilled on the same angle as the other bolts. Newer heads had the center bolts straight up, not angled. Vortec heads have no center bolts.
And, as far as I know the balancer and flywheel from a 305 is not the same as a 350. I believe the balancing is different.
The differences in intakes is again depening on what heads were installed. The older heads had the center four bolts drilled on the same angle as the other bolts. Newer heads had the center bolts straight up, not angled. Vortec heads have no center bolts.
And, as far as I know the balancer and flywheel from a 305 is not the same as a 350. I believe the balancing is different.
02-27-2006, 06:55 AM
#10
Registered
Join Date: Sep 2004
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
Re: Differences in 1986-1987 and up 350's?
Originally Posted by Iggy
First, if your looking to upgrade a Merc built engine, they didn't use roller cams till sometime in 88. Even then depending on S/N it could still have a flat tappet cam. Roller cams were installed mid year in 88.
The differences in intakes is again depening on what heads were installed. The older heads had the center four bolts drilled on the same angle as the other bolts. Newer heads had the center bolts straight up, not angled. Vortec heads have no center bolts.
And, as far as I know the balancer and flywheel from a 305 is not the same as a 350. I believe the balancing is different.
The differences in intakes is again depening on what heads were installed. The older heads had the center four bolts drilled on the same angle as the other bolts. Newer heads had the center bolts straight up, not angled. Vortec heads have no center bolts.
And, as far as I know the balancer and flywheel from a 305 is not the same as a 350. I believe the balancing is different.
