Firenza V8.

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CanAm17
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Re: Firenza V8.

Post by CanAm17 » Thu 14 Aug 2014, 15:49

The biggest problem I have my Camels is that the spring pad is too small to handle the heavy duty springs we need to run with the roller cam. When we do run that cam I swop over to aftermarket GM ally heads that handle the big springs beautifully. The Classic guys do allow aftermarket ally heads, but prefer period heads, or at least from the same manufacturer, rather than aftermarket. Interesting that GM did have ally head available in the late 60's.
1967 MGB GT V8
1973 Chev Firenza Can Am
1978 Ferrari 308 GTB
2010 Mini Cooper JCW

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Can-Am ZN
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Re: Firenza V8.

Post by Can-Am ZN » Thu 14 Aug 2014, 16:02

CanAm17 wrote:The biggest problem I have my Camels is that the spring pad is too small to handle the heavy duty springs we need to run with the roller cam. When we do run that cam I swop over to aftermarket GM ally heads that handle the big springs beautifully. The Classic guys do allow aftermarket ally heads, but prefer period heads, or at least from the same manufacturer, rather than aftermarket. Interesting that GM did have ally head available in the late 60's.
Yes, that is interesting...I only discovered that recently.

What cam do you run with the original Camel heads then, Anton?
Gavin

1974 Chev Can-Am 302
1991 BMW 325iS Evolution (SOLD)


"The sad reality about the uneducated is that they don't know that they don't know." - Me

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CanAm 83
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Re: Firenza V8.

Post by CanAm 83 » Mon 18 Aug 2014, 07:25

Hi Guys,

I had the same with my camels. Because I'm running 1.6 roller rockers, the normal z/28 springs wouldn't work. Bietjie te pap. I then got myself some Manley Z/28 heavy duty springs. They are slightly longer than the normal versions, but not wider. This with the 30/30 cam, and rocker ratio calcuated to 120 lbs spring pressure, perfect for a solid flat tappet. Obviously the brake in additive, cam lube and break in period was followed.

Jus

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CanAm17
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Re: Firenza V8.

Post by CanAm17 » Mon 18 Aug 2014, 10:08

Hi Gavin. I've run various flat tappet cams over the years, generally Crower with around 295-300 full duration. Have had some profiling done on a few of them through the Van De Linde's who also did the flowing and porting on my Camels.
1967 MGB GT V8
1973 Chev Firenza Can Am
1978 Ferrari 308 GTB
2010 Mini Cooper JCW

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Can-Am ZN
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Joined: Mon 23 Jun 2014, 15:27
Location: Valley of 1000 Hills, KwaZulu-Natal

Re: Firenza V8.

Post by Can-Am ZN » Mon 18 Aug 2014, 11:13

Thanks Anton.

My cam needs replacing and I'm hoping you can give me some advice, with you having experimented as you say.

Will PM you later :)
Gavin

1974 Chev Can-Am 302
1991 BMW 325iS Evolution (SOLD)


"The sad reality about the uneducated is that they don't know that they don't know." - Me

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barrydorr
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Re: Firenza V8.

Post by barrydorr » Mon 25 May 2015, 02:21

I am scolling thru the forum and it older treads..

Ters read back your tread and note your comments about your Capri and the Monaco :lol:
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