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> VFN - Bolt on fiberglass hood - 95 Z28, Weight reduction much less than expected
z28barnett
post Jun 20 2005, 08:46 PM
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I installed a VFN flat fiberglass hood on my camaro.

The bare stock steel hood weight was 44.5 lbs.

The bare fiberglass hood weight was 34 lbs.

The weight savings was only 10.5 lbs

The weights were measured with a digital bathroom scale. With me holding the hood each time and my weight subtracted out.

The VFN site lists the hood weight as follows.

'93-97 Stock flat Bolt On Hood (with or without vents).Price=360.00 Weight=18 Ship: Truck Freight.

The stock steel hood weight checks with other sources, so I am reasonably confident in the scales.

So it would appear that the weights that VFN gives are a wild ass guess.

The hood is a good quality piece and the fit is good after I redrilled the upper hood brackets. The rear of the hood is way too high without redrilling the hood brackets. Also had to dremel areas around the hinges to get clearance

The front edge of my stock steel hood was rusting through and the area is prone to hail storms, so I am happy with the hood even though the weight is much greater than they listed by around 16 lbs.

Moral of the story is for weight reduction go with a pin-on hood or perhaps carbon fiber and weigh the hood before you install it.

Z28
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z28barnett
post Jun 21 2005, 03:05 PM
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I posted the weight of the hood for a good reason.

As I expected several people have told me how light their hoods are, but no actual weights.

The 34 lb hood feels light to me so numbers are the only good way to go.

I posted the weight of the hood so people could decide for themselves with some accurate weight information.

I did not want an unpainted carbon fiber hood. It is interesting that carbon fiber is about 2.3 g/CC and fiberglass is about
2.55 g/CC.

That means that carbon fiber would only save about 10% if the hood is laid up at the same thickness. Carbon fiber would be much stronger than fiberglass, but not that much lighter. Since the strength of the hood is not very important and fiberglass is half of the cost it may be the better choice.

The RKSport hood is not completely carbon fiber. The cosmetic carbon fiber from RKsport and VFN is a thin layer of carbon fiber over a fiberglass base. That gives you the look, but it is really a glass hood.

You don't save on painting with many carbon fiber hoods. The resin will yellow and crack unless the hood is painted with a clear coat to protect it. VFN cosmetic carbon fiber hoods are this way.

If you are putting on a hood, weigh it and your stock hood. Then post the info here, and we will have a resource for accurate info.

Z28
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Posts in this topic
z28barnett   VFN - Bolt on fiberglass hood - 95 Z28   Jun 20 2005, 08:46 PM
nape   Yeah, bolt-on fiberglass hoods are lighter, but it...   Jun 20 2005, 11:31 PM
rmackintosh   well the pin on VFN is light as hell.... :leaving:   Jun 21 2005, 05:29 AM
torontoZ28   my friend had a bolt-on carbon fibre hood made for...   Jun 21 2005, 02:30 PM
z28barnett   I posted the weight of the hood for a good reason....   Jun 21 2005, 03:05 PM
rmackintosh   QUOTE (z28barnett @ Jun 21 2005, 09:05)I post...   Jun 21 2005, 10:19 PM
torontoZ28   QUOTE (z28barnett @ Jun 21 2005, 11:05)The RK...   Jun 21 2005, 11:11 PM
firehawkclone   It's not a VFN hood, in fact i don't know ...   Jun 22 2005, 02:52 AM
NickS   FWIW, the Blaine Fab carbon fiber hood on the AI c...   Jun 22 2005, 05:35 AM
z28barnett   QUOTE (NickS @ Jun 21 2005, 23:35)FWIW, the B...   Jun 22 2005, 11:34 PM
nape   QUOTE (NickS @ Jun 21 2005, 23:35)FWIW, the B...   Jun 23 2005, 04:33 AM

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