Holden 304 Tie Bar Roller Lifters

For non EFI mechanical discussion
brindo
Posts: 199
Joined: Mon Jun 29, 2009 9:43 am
Location: Western Queensland

Re: Holden 304 Tie Bar Roller Lifters

Post by brindo »

I have done a bit more research on this with the help of that link above, and basically I have come to the conclusion that anything Holden V8 with a roller cam will always cost a small fortune.

So haven’t tried the Pontiac roller lifters, but have found the following brands and part numbers as direct fits.
Elgin HL-4020S
Morel 5337
Howards 91466H
Doug Herberts T5337
immortality
Posts: 3416
Joined: Thu Apr 09, 2009 12:31 pm
cars: VH, VN, VS, VX

Re: Holden 304 Tie Bar Roller Lifters

Post by immortality »

I think if you were to weight up the cost Vs benefit especially if you compare a roller Vs FT and the increase in performance the roller cam gives then the costs really aren't to bad.

Roller cams also do away with the anxiety of running in/wiping a lobe because of the oils we use today.....
User avatar
Holden202T
Posts: 10311
Joined: Sat Feb 28, 2009 9:05 pm
Location: Tenambit, NSW
Contact:

Re: Holden 304 Tie Bar Roller Lifters

Post by Holden202T »

yeah and you can run more aggressive lob profiles and heavier springs without major wear issues!
brindo
Posts: 199
Joined: Mon Jun 29, 2009 9:43 am
Location: Western Queensland

Re: Holden 304 Tie Bar Roller Lifters

Post by brindo »

This is very true. Problem is the cam I wanted is laughably small. I compared the open area of my cam to a factory VK Group A and it is smaller on the intake and slightly bigger on the exhaust.
User avatar
Holden202T
Posts: 10311
Joined: Sat Feb 28, 2009 9:05 pm
Location: Tenambit, NSW
Contact:

Re: Holden 304 Tie Bar Roller Lifters

Post by Holden202T »

that doesn't really matter, its more about if the cam is the best option for your intended application!

best street cam I ever had was a good 15-20 degrees smaller than all my mates, fucking smashed em too and it was drivable :P
immortality
Posts: 3416
Joined: Thu Apr 09, 2009 12:31 pm
cars: VH, VN, VS, VX

Re: Holden 304 Tie Bar Roller Lifters

Post by immortality »

Exactly. One of the gun engine builders on the AV8 forum just built a street roller 355. Fairly basic heads, TP high rise dual manifold running a smallish hydro-roller cam (I think it was 228° In./Ex. but around the .600" valve lift) and made 479hp on engine dyno with a very impressive torque curve to boot all without going over 6500rpm (if memory serves). To compare that with a FT engine you would be looking at a well built motor with a crane 280 or 288 to get similar numbers revving over 7500rpm.

AT TP they built a stock stroke 304, 10.5:1 with 230° 110 lsa Hydro FT cam .514" valve lift to make 400hp as a demonstration of there dual high rise manifold.

These days it less about duration and more about the total lift.
User avatar
Holden202T
Posts: 10311
Joined: Sat Feb 28, 2009 9:05 pm
Location: Tenambit, NSW
Contact:

Re: Holden 304 Tie Bar Roller Lifters

Post by Holden202T »

and the earlier you can get to full lift the better!

this is my old streeter 202 :) the HP wasn't the main thing, it was the nice flat torque curve, it made really good power from 1500-2000 onwards and didn't need to rev it over 5000rpm!
sam-new-old-dyno-cropped.JPG
sam-new-old-dyno-cropped.JPG (362.83 KiB) Viewed 5057 times
Post Reply