Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Push rods

Thread Tools
 
Search this Thread
 
Old 04-14-2008, 03:17 PM
  #1  
Junior Member
Thread Starter
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373
Push rods

is there any way i can find out the length of the pushrods i need with out buying a adjusabel one Becasue im just using vortec heads on a 350 with 1.5 roller rockers.
Old 04-14-2008, 03:41 PM
  #2  
Member
 
doc221978's Avatar
 
Join Date: Oct 2006
Location: Allenhurst, GA
Posts: 320
Likes: 0
Received 0 Likes on 0 Posts
Car: '81 Z-28
Engine: Soon to be a 383
Transmission: Muncie
Axle/Gears: 3.42
Re: Push rods

Stock pusrods should be the right length. It should be 7.2" if you have a stock roller, or 7.8" for a flat tappet. When assembled the center of the roller tip should be just barely past the center of the pushrod. Just don't forget to use guide plates and hardened pushrods. I made the mistake of using regular pushrods with plates, they don't last long.
Old 04-14-2008, 05:24 PM
  #3  
Supreme Member

 
ljnowell's Avatar
 
Join Date: Mar 2004
Posts: 3,935
Likes: 0
Received 0 Likes on 0 Posts
Re: Push rods

Originally Posted by doc221978
Stock pusrods should be the right length. It should be 7.2" if you have a stock roller, or 7.8" for a flat tappet. When assembled the center of the roller tip should be just barely past the center of the pushrod. Just don't forget to use guide plates and hardened pushrods. I made the mistake of using regular pushrods with plates, they don't last long.
The roller tip should actually be just a little past halfway of the valve tip. And you need to checke the sweeping pattern of it also. Stock ones will probably work, but will not be neccesarily right. I would mock up with the stockers and see what you need.
Old 04-14-2008, 06:00 PM
  #4  
Junior Member
Thread Starter
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373
Re: Push rods

what diamiter do i use 3/8'' or 5/16'' ?
Old 04-14-2008, 06:37 PM
  #5  
Member

iTrader: (11)
 
Bigseth's Avatar
 
Join Date: Aug 2006
Location: Rock Hill SC
Posts: 214
Likes: 0
Received 0 Likes on 0 Posts
Car: 86 Iroc 383 carb, 97 T/A WS6
Re: Push rods

5/16, you can get those hardened pushrods from comp for like $30

Seth
Old 04-15-2008, 12:59 AM
  #6  
Supreme Member

iTrader: (1)
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Likes: 0
Received 4 Likes on 4 Posts
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: Push rods

I just bought a pushrod length checker, it cost me a grand total of $12 here in canada, and was on the shelf ready to go. I highly recommend you do the same.

I ended up getting 7.870" Ford 351C pushrods for my 350. Who would have thought right?
Old 04-17-2008, 11:04 PM
  #7  
Junior Member
Thread Starter
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373
Re: Push rods

ya i guess ill pick one of thoes up
Old 04-18-2008, 12:02 AM
  #8  
Supreme Member
iTrader: (1)
 
EvilCartman's Avatar
 
Join Date: Apr 2000
Location: Northern CA.
Posts: 5,321
Likes: 0
Received 4 Likes on 4 Posts
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Re: Push rods

Also, buy 1 piece pushrods. I didn't know any better and broke the tips off of 2 pushrods at the track 2 different times out
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RS Reaper
Electronics
4
10-17-2018 07:52 PM
Ed1LE
Suspension and Chassis
8
09-30-2018 09:14 AM
LT1Formula
Engine/Drivetrain/Suspension Parts for Sale
7
10-08-2015 08:34 PM
skinny z
Engine/Drivetrain/Suspension Parts for Sale
5
10-05-2015 06:23 PM
92projectcamaro
Engine Swap
4
09-29-2015 07:07 PM



Quick Reply: Push rods



All times are GMT -5. The time now is 01:57 PM.