Thanks for the feedback.
I am changing the cam. I am installing an RV grind, single profile,
270 deg duration, 110 deg lob centers with .475" lift. This seems
about the norm for towing low end torque for the 454. I have not had
any heating problems with the 402. We travel in the Southwest in the
summer in heats up to 115 deg and have not had any heating problems.
We have had vapor lock problems because of fuel line routing, but no
engine heating. I am towing a 89 Isuzu trooper. I do plan on going
over all the cooling system. Any suggestion on fan options? I
currently have the standard fan clutch.
--- In classicrv@y..., jforb427@y... wrote:
> I don't have any experience with Amigos, but I do have some with
> block chevy engines.
> The 454 will be quite an improvement over the 402. If it's not too
> late, I'd suggest adding a cam that's a little bit bigger than
> Also, if you had any cooling problems with the 402, they'll
> be worse with the 454...so check the radiator, fan clutch, etc
> carefully, and replace as necessary.
> Sounds like fun!
> Jim Forbes in AZ
> -------orig message----------
> Hi! Glad to find a group about classic rv's. I am a college prof,
> SOSU aerospace, and my wife is a nurse. We have owned our 73 Amigo
> 25' for about two and a half years and travel extensivly with it.
> The coach has some updated appliances but otherwise I think is
> orginal. It had a chevy 402 that just recently developed a crack
> the block so I am building up a 454 to replace it. I hope to be
> on the road in a few weeks.
> Would be interested in any information about the Amigo coachs. I
> have not seen another one, although I do see two others listed in