Race Engine Forum UK

Guy,

Is it worth fitting 130TC cams in place of my std Monte ones? I'm fitting Megajolt ignition system over the winter so the distributor drive isn't a concern. It's currently on a DIY gas flowed Volumex head and twin DCNFs and makes 150bhp @ 6K and 142ft/lb at 4.5K.

Thanks in advance,
Nick

NO

GC

That's a fair answer :o) Thanks Guy.

Hello Guy,

I don't understand because I have a 130TC in my Montecarlo. Except the pistons I don't see a lot of differences. Is it the point ?
Thank you,

Robert

Robert mon ami,

I think we all know the 130tc cams are a bit better than std TC cams, but in Guys opinion not worth the effort of swapping them. Which will do for me.

Nick

Nick,

I think that the FL is 0.6mm higher for the 130TC than the Monte.
I think that the opening is 238° for the 130TC but with 0.8mm of lash (Fiat spec) and with 0.4 (GC recommendation) you get about 276°.
I don't know the opening of the Montecarlo at 0.4mm...

Robert

Or on the other hand-

A Monte make 118bhp with a single twin choke 34 DATR carb and 9.0:1 CR.

A 130TC makes 'just' 130bhp on twin 40's, bigger inlet valves and 10:1CR (?? might be wrong)

Cams can't be that special can they?

Nick,

I understood you wanted to use VX head (same as 130TC) so bigger valves. So the possibility to get more filling ...
Sorry for my misunderstanding.

Robert

No problem Robert.

I already have a VX head on there and just wondered if the 130TC cams would be a worthwhile upgrade over the std Monte ones, but clearly not in Guys opinion. And applying my logic above then that actually makes a lot of sense.

Nick

Agree
Robert

hahaha!

you can see why I just said 'no'..

there is a time for discourse and a time for brevity....

G