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Old 11-27-2011, 12:20 PM
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Default Cowl Cutting

Just got my motor back from Virgina Speed. Thanks Shawn.
Now got to fit this monster, with it's Super Vic and Fast 4150, in the engine bay.
I cut the top cowl about a 1/2" from the windshield almost all the way across.
I cut the bottom cowl to match the top.
I'm going to stich weld a piece of metal between the two. I think that's what most people do. Then fill in the gaps.
But, I've seen some pics, that looks like some people cut the bottom cowl futher back toward the firewall.
Which is the perferred method?

Also, what gauge metal do I need, and what to fill in the gaps? (Something I can sand or grind down smooth.)

I've done alot of research, but still alittle confused.

Thanks in advance, George
Old 11-27-2011, 01:03 PM
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I cut mine just like you have described. I bought a sheet of 0.024" steel and it worked well. It is easy to bend and can be cut with snips. I haven't filled and smoothed it yet but I plan to use evercoat finishing putty.
Old 11-27-2011, 01:11 PM
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her is some idea's



Old 11-27-2011, 01:32 PM
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here is some more




Old 11-27-2011, 01:43 PM
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Very nice work right there!
Old 11-27-2011, 01:50 PM
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Old 11-27-2011, 01:58 PM
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Originally Posted by fuel
her is some idea's



That's the one I'm copying from.
After stich welding, what do I fill in the gaps with?
That's exactly what I'm shooting for.
Thanks for all the responses.
Old 11-27-2011, 02:00 PM
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Originally Posted by 5.3LJimmy
I cut mine just like you have described. I bought a sheet of 0.024" steel and it worked well. It is easy to bend and can be cut with snips. I haven't filled and smoothed it yet but I plan to use evercoat finishing putty.
Thank you, Sir.
Old 11-27-2011, 06:11 PM
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I think I found some filler.
Evercoat Body Filler Z-Grip. Then go back over that with their Finishing Putty.
Sounds like the old Bondo filler we used back in the 70's.
Old 11-27-2011, 09:01 PM
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heres mine, same as above but maybe a slight different, combine the 2 and make the best? I used a metal filler i bought from napa, IMO its better then bondo since its more of a metal. Just food for thought...







Old 11-27-2011, 09:16 PM
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wow man did you cut off the area along where the top of the fender bolts on? How much weight did that save?
Old 11-27-2011, 09:25 PM
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U talking about the inner fender area?.. Yea everyone does, lol. I'd say 3-4lbs a side. And no the fender doesn't bolt to it, it bolts to the top flange, this is all extra metal that "doesn't matter" on a drag car
Old 11-27-2011, 10:44 PM
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Could you have the stock windshield cut shorter?


Do you have to use some filler? On some spot on my car I welded it fully and ground it down. Solid metal edge with no filler. You have to move around welding it, and spend some time welding. But cuts any filler steps out, and letting that hardend.
Old 11-28-2011, 07:20 AM
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Originally Posted by studderin
Could you have the stock windshield cut shorter?


Do you have to use some filler? On some spot on my car I welded it fully and ground it down. Solid metal edge with no filler. You have to move around welding it, and spend some time welding. But cuts any filler steps out, and letting that hardend.
The process is to grind and it pretty much a hit and miss deal on safety glass. Pretty much a skill that might take more than one windsheild to master.

One thing to consider on these cuts is knowing exactly where you need to remove material. I saw a shop car cut up once just to find that they really did not gain much from a room perspective. Had they mocked things up instead of just cut they would have known that. It had to suck to go cutting again once all the work was thought to be done.
Old 11-28-2011, 04:37 PM
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Originally Posted by Taubr Unit
heres mine, same as above but maybe a slight different, combine the 2 and make the best? I used a metal filler i bought from napa, IMO its better then bondo since its more of a metal. Just food for thought...







That looks nice, too.
Do you remember the brand of metal filler. Also can you hand sand it or do you have to grind it.
Old 11-28-2011, 06:46 PM
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no i dont remember the specific name, just a metal filler from NAPA. It dries up hard but still able to sand it smooth, takes a little more time then bondo but works better IMO.
Old 11-28-2011, 06:48 PM
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this is the final product after everything is painted etc. Clears the 6061 elbow with no problems at all (if thats what ur gonna run)....

Old 11-28-2011, 07:22 PM
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all metal is what i used.but ill be using rage on the engine bay this time.
Old 11-29-2011, 04:43 PM
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Do you mig or tig weld the metal filler plate between the upper and lower cowl.
A guy at work said that he could tig it. I though that you would use a mig welder on that. I'm no welder, just asking.
Old 11-29-2011, 05:09 PM
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Mine was deff mig'ed, tig I can see bein a PITA and not needed


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