Does anybody know if this is a 305 or 350??????
08-16-2010, 10:44 PM
#1
Junior Member
Thread Starter
Join Date: Nov 2009
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Does anybody know if this is a 305 or 350??????
We started a project about a week ago, the motor isnt the original motor, the numbers are as follows on the block, K0309PNM can anybody tell me what the CID is for this motor. Thanks.
08-16-2010, 10:45 PM
#2
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Does anybody know if this is a 305 or 350??????
What's the casting number behind the drivers side head?
08-17-2010, 12:33 AM
#4
Moderator
Join Date: Jul 1999
Location: 51°N 114°W, 3500'
Posts: 17,169
Likes: 0
Received 136 Likes
on
114 Posts
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Does anybody know if this is a 305 or 350??????
I see no PNM suffix number listed. Are you sure that's the correct letters?
08-17-2010, 04:28 PM
#6
Junior Member
Join Date: Mar 2005
Location: Charlotte, NC
Posts: 47
Likes: 0
Received 0 Likes
on
0 Posts
Car: '89 Trans Am
Engine: 350 TPI
Transmission: T-5
Axle/Gears: 9 bolt 3.23 posi disks
Re: Does anybody know if this is a 305 or 350??????
If the heads are off it you can usually tell just by looking at the cylinders.
08-17-2010, 06:11 PM
#7
Junior Member
Thread Starter
Join Date: Nov 2009
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
08-17-2010, 06:44 PM
#9
Junior Member
Thread Starter
Join Date: Nov 2009
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Re: Does anybody know if this is a 305 or 350??????
Yeah, whats weird is, that it says its a roller 305, when I pulled it apart, it had a flat tappet cam and lifters. ?? Any insight on that?? Im really confused. I think as stated on another post, Im going to just get a 350 and start that build instead I was really hoping the motor in it was a 350. poop
08-17-2010, 07:07 PM
#10
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 36 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Trucks had flat tappet cams, and people often replace roller cams with a cheaper flat tappet.
08-17-2010, 07:41 PM
#11
Junior Member
Thread Starter
Join Date: Nov 2009
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Re: Does anybody know if this is a 305 or 350??????
Ok, I didnt know you could do that. I thought you must stay roller if it was roller. Wonder if it would be benificial to get a roller set up, or still screw the whole thing and get a 350?
08-17-2010, 07:54 PM
#12
Re: Does anybody know if this is a 305 or 350??????
SBCs designed for roller cams also had provisions for flat tappet style cams. The reverse is not true, though retrofit kits do exist to convert from flat tappet to hydraulic roller cams. Though I am uncertain as to how well they work.
08-17-2010, 08:02 PM
#13
Moderator
Join Date: Jul 1999
Location: 51°N 114°W, 3500'
Posts: 17,169
Likes: 0
Received 136 Likes
on
114 Posts
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Does anybody know if this is a 305 or 350??????
Any flat tappet engine can be converted to roller cam. You just need to use roller lifters with a link bar because the lifter bores don't have alignment slots to hold OEM style roller lifters. The link bar between 2 lifters keeps them in alignment.
08-17-2010, 09:12 PM
#14
Junior Member
Thread Starter
Join Date: Nov 2009
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Re: Does anybody know if this is a 305 or 350??????
Thanks for the info. So that explains why he had new push rods from sealed power in the motor. He prob had to get a different length cause he went flat tappet. Well, I stayed with a flat tappet cam, but have different rockers, wonder if I can use the push rods he has? Would different rockers matter to the push rod length?
08-17-2010, 10:13 PM
#15
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Does anybody know if this is a 305 or 350??????
Probably not, but you should measure to see.
Thread
Thread Starter
Forum
Replies
Last Post
