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lt1_performance 01-05-2008 07:30 PM

fiberglass hood molding?
I am new to the skills of fiberglassing and have read alot on the internet. I want to know what you think is the best way to make a mold of a hood to make a fiberglass duplicate. I'm building a pro-street S-10 on a budget and need to drop some weight and make some room for a tall intake and carb. How would you go about making the mold to work off of? I dont know how you could make foam (floral foam) copy the outside of the stock hood. (with a 4-5 inch cowl that is :D ) Just let me know how you would do it! Thanks

lumberjacknooj 01-05-2008 10:26 PM

You could use your stock hood as the buck- coat it with some kind of release agent- then fiberglass over it. If you smooth it nicely when laying your glass you may not have a lot of smoothing to do when it's done.

As far as the cowl- you could use floral foam to get the shape you want on your stock hood; But you'd need to paint it or cover it with tape/aluminum foil or something, to keep it from sticking to your fiberglass (if the foam sticks, you could just tear it off of your f/g piece once it's cured).

When it's cured pop it off, flip it over and lay down some foam or wood strips and fiberglass over it to give it a little strength.

Here's a little turorial I found on making a fiberglass hood. Maybe it'll help you out.

Good luck!


Chevrolet4x4s 01-06-2008 06:04 AM

Thats Awesome,I was kicking the idea of making my own fiberglass parts around the other day. :welcome: Thanks for the link,For a more exact fit wouldnt it be better to make the mold,pop it off then put the fiberglass into it.


speedydeedy 01-06-2008 07:43 AM

Yes, making a mold then your part out of the mold gives you a nice finish to start with. Hood scoops can be bought fairly cheap. You could buy 1 then mold to your hood then make a mold with integral scoop. Then pull the new hood with scoop out basically a finished product or as someone said shape the scoop you want out of foam and coat it with gel coat or other and make a mold then your hood.Being S10s are so popular you could probably buy a hood with scoop cheaper than you can build a mold and part. Unless you can get materials at a very good deal.Of course there is always just wanting to do it to see if you can or to be able to say you did no matter what the cost. Go for it.

dalesy 01-06-2008 07:51 AM

I'm definitely not trying to stifle your creativity, but if you've done more than reading about fiberglassing, you'll know that it's a bit on the expensive side; it's very messy; the chemicals are very flammable and toxic; and the dust from sanding it is very abrasive ( gets in your clothes and gives you the "itchies"). And if you should happen to mess it up, it's like burned money.

If you are on a budget, and not in a big hurry, you might want to go ahead with some other aspects of your project, while searching for a used or new fiberglass hood. I don't think they're too expensive anymore, and certainly more cost-effective than making one from scratch. You can always do the opening for the carbs yourself.

Again, I'd like to see you learn a craft like this; but it might be good to start off with something small and simple......just to see how it goes, and if you really like to do it.

Vortech 4.3 01-06-2008 08:40 AM

what year is it ?

1st gens. you can get complete fiberglass front ends for em.
2nd gens. there are fiberglass hoods for em.

if you just want to make your own, have fun. i want to make a fiberglass front bumper and air dam for my truck to save weight. no one makes em. but i don't have the ability right now.

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