FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#1
|
||||
|
||||
1967 400 lifters
Is there any difference between a 67 400 block and a 76 400 block when it comes to lifters.
Im have a heck of a time keeping the lifters adjusted. GTO George |
#2
|
||||
|
||||
No difference.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following User Says Thank You to b-man For This Useful Post: | ||
#3
|
||||
|
||||
I didn’t think so!
I am having a heck of a time keeping them adjusted.....they get tight and they get loose....weird! Thanks, GTO George |
#4
|
||||
|
||||
Are you using poly locks? Or?
|
The Following 2 Users Say Thank You to PAUL K For This Useful Post: | ||
#5
|
||||
|
||||
Yes and also it’s not a 400 it’s a 421…….I’m bad!
GTO George |
#6
|
||||
|
||||
421 heads? Press in studs could be backing out.
Polylocks need the top of the stud ground flat for the set screws to seat on and stay tight, another possibility.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following 2 Users Say Thank You to b-man For This Useful Post: | ||
#7
|
||||
|
||||
What Bart said..... Are they initially setting and then loosening up?
|
The Following 2 Users Say Thank You to PAUL K For This Useful Post: | ||
#8
|
||||
|
||||
Quote:
GTO George |
#9
|
||||
|
||||
No 421 block in 1967, so is it the heads that are 421?
The pushrods the correct length?
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#10
|
||||
|
||||
Quote:
GTO George |
#11
|
||||
|
||||
Cam lobes going flat?
Those rockers are known for the rocker balls not being a good fit, possibly wearing in at this point. Watch out for bluing in the ball pivot area.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following 4 Users Say Thank You to b-man For This Useful Post: | ||
#12
|
||||
|
||||
My concern would be those rockers....
__________________
1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... |
The Following User Says Thank You to 77 TRASHCAN For This Useful Post: | ||
#13
|
||||
|
||||
This are the ones I bought (they are new), I thought they would be better then stock rockers.
GTO George |
#14
|
||||
|
||||
Stock rockers or full roller rockers.
Anything in between reality isn’t worth using. At least go for some proven Harland Sharp rockers, those roller tip stamped type rockers are sketchy at best in my opinion. Some folks have good luck with them, others not so lucky.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following 4 Users Say Thank You to b-man For This Useful Post: | ||
#15
|
||||
|
||||
Quote:
GTO George |
#16
|
||||
|
||||
I think it would be wise to pull those off and put the stockers back on before those rollers tips put any more metal in your engine.
I’d try to return them as defective because they likely are.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following User Says Thank You to b-man For This Useful Post: | ||
#17
|
||||
|
||||
They are not only getting loose (ticking) they also get tight (where it starts to miss). And then I have to readjust them and it’s fine for a little while. Freaking weird!
GTO George |
#18
|
||||
|
||||
Quote:
GTO George |
#19
|
|||
|
|||
Sorry if this was already answered but, has it been confirmed that the nuts are coming loose or something moving? Might try a little loctite blue and run the test again.
__________________
1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear 1969 Firebird 350/TH350 Mostly stock 2.56:1 Rear |
#20
|
||||
|
||||
Quote:
GTO George |
Reply |
|
|