Author Topic: Comp Cam adjustable valve train 403  (Read 491 times)

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Comp Cam adjustable valve train 403
« on: April 07, 2021, 08:11:13 PM »
I added a set of good used #7 heads to my 403 big difference in power and exhaust sound. I ended up with a small rocker arm tick so i am going to add a adjustable Comp Cam 1441 valve train kit . Has anyone used this kit ? any tips on install ?
https://www.jegs.com/i/COMP-Cams/249/1441-KIT/10002/-1
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Wallington

  • Active Forum Member
  • *
  • Posts: 888
Re: Comp Cam adjustable valve train 403
« Reply #1 on: April 08, 2021, 04:17:45 AM »
You'll possibly need custom length pushrods to suit your engine and heads.
« Last Edit: April 08, 2021, 08:39:40 PM by Wallington »

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #2 on: April 08, 2021, 06:33:00 AM »
Wondering why i would nee that The kit is made for a stock 403. Motor still has the stock cam from 1979 is all original except the heads . Spoke to the machine shop that inspected the heads valve stem height could be off for non adjustable valve train they suggested this kit. Not looking to make it a race car just add a little HP. Before i took off the 4A heads the motor ran and sounded great no tick. Thanks for your thought on this .
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Wallington

  • Active Forum Member
  • *
  • Posts: 888
Re: Comp Cam adjustable valve train 403
« Reply #3 on: April 08, 2021, 08:18:43 PM »
You no longer have a stock 403. The replacements may be of use but rarely are. An adjustable pushrod will determine the length you need and then compare.
Stock length 350-403 pushrods measure in @ 8.265". The 7843 pushrods supplied with the 1441-KIT are 8.500". Different valvetrain design obviously. My rebuilt 403 and 4A's skimmed once required 8.400". If either have been rebuilt in the past, or machined or had new valves put in, it becomes an unknown. Again, may be just fine.
« Last Edit: April 08, 2021, 08:38:10 PM by Wallington »

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #4 on: April 09, 2021, 05:46:43 AM »
Got it. Appreciate you taking the time to explain .
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Re: Comp Cam adjustable valve train 403
« Reply #4 on: April 09, 2021, 05:46:43 AM »

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #5 on: April 16, 2021, 06:29:17 PM »
The kit is in and running fine . The biggest pain was setting up all the push rod guide plates after that it was straight forward . The quality of the rocker arms were very good the only bad part was the lock nuts for the rocker arms very cheep . I would suggest a good quality nylock nut instead .
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Wallington

  • Active Forum Member
  • *
  • Posts: 888
Re: Comp Cam adjustable valve train 403
« Reply #6 on: April 17, 2021, 04:18:34 AM »
I didn't use the supplied kit nuts either, Comp Cams polylocks.
« Last Edit: April 17, 2021, 09:32:07 PM by Wallington »

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #7 on: May 02, 2021, 08:22:42 PM »
Hey Wallington . Did the nuts you used still fit under the factory Olds valve cover ?
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Wallington

  • Active Forum Member
  • *
  • Posts: 888
Re: Comp Cam adjustable valve train 403
« Reply #8 on: May 02, 2021, 11:11:51 PM »
All stock here for valve covers

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #9 on: May 03, 2021, 05:19:04 AM »
I still have the junk nuts on but just ordered a push rod checker so i can order the correct push rods. Do you remember what Com Cam part number you used for the better rocker arm nut ?
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Wallington

  • Active Forum Member
  • *
  • Posts: 888
Re: Comp Cam adjustable valve train 403
« Reply #10 on: May 03, 2021, 08:27:16 AM »
No, sorry. I believe they were also Comp Cams brand. That was 10 years ago and much of the products have changed, I just did a search to see that. I still have the ball nuts and another set of polylocks that were returned after engine rebuild, so they may have tried another set first.

Just checked my notes I'd saved in regards to engine rebuild details. No parts numbers given but says to use the 'short' polylocks for clearance, otherwise if using the regular length with valve covers and internal baffles you may need to double up the gasket.
« Last Edit: May 03, 2021, 08:37:37 AM by Wallington »

Gold member

  • Oracle Forum Member
  • *
  • Posts: 1088
Re: Comp Cam adjustable valve train 403
« Reply #11 on: May 03, 2021, 08:34:15 PM »
I just purchased the Comp Cams 4604-16 poly lock Rocker Arm Nuts will report back and let everyone know if they fit under the stock covers.
1979 Gold Bird
original paint and decals motor and trans   solid body mounts   frame connectors  full suspension overhaul  255/50/17 Nitto tires and YO snowflakes .  
Jim

Re: Comp Cam adjustable valve train 403
« Reply #11 on: May 03, 2021, 08:34:15 PM »
You can help support TAC!

 

You can help support TAC!