Tony -
I have used mechanical rollers in SVO and Dart blocks with no machine
work. Not sure if the same for later model Stock type Hydraulic Rollers or for
early blocks but I would check with CompCams, or other supplier to see what
they have available and what you need to do to the block.
The gear on the
distributor will need to be changed IF you have a true billet cam, but some of
the street rollers do not require it as I understand it.
Do not run a
rollers on a non-roller cam (or the other way), the way they work and the
shape/style of the cam lobe is totally different and it will result in a FAIL
if you try it. Also don't forget to use the correct valve spring (different
for flat vs. rollers) and check valve to piston clearance if running big lift.
HTH
Sandy
----- Original Message ----
From: Tony Somebody
<achd73@yahoo.com>
To: tigers@autox.team.net; Jeffrey Nichols
<jxnichols@sbcglobal.net>
Sent: Tuesday, August 18, 2009 10:34:21 AM
Subject:
Re: [Tigers] Roller 289
Jeff- have you dynoed your engine? Just wondering
what kind of HP you managed to massage out of a 260 block.
To others who
started this thread, I have a 5 bolt 289 and have had it in several cars,
including 2 Tigers. I would grab another if I ever got the chance. Knowing how
much abuse I put the engine thru, the last time I rebuilt it, I considered a
roller cam and lifters. There is a kit but the necessary machine work to make
the cam work was extremely costly or perhaps only lifters could be installed
(memory problems exist)- no matter I decided to store the fresh engine and use
a 5.0 HO engine when I go to a roller engine. know there is a hp gain when
using the roller lifters but is it worth the machine work and cost. Also
mentioned is the dist. gear requiring change if used with a roller cam. Is
there a problem using roller lifters with a non roller cam because of the
hardness-like w/ the dist. gear.
TtT
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