Are there any drag racers here and is a performance forum a good idea?
+11
chevellelaguna
bracketchev1221
pila
dynchel
oldstofty
Brainstain
WyldeBill66
BlackChevelleSS
Bruisr
carcass
JB2wheeler
15 posters
G3GM :: G3 Tech :: Performance
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Re: Are there any drag racers here and is a performance forum a good idea?
Yeah, no one has ever given a detailed description of how to remove crash braces. By looking at it I'm thinking drilling the spot welds on either end? And how much do they weigh? I'm guessing a lot of people are overly optimistic about how much they actually weigh.bracketchev1221 wrote:oldstofty wrote:Im heavy into drag racing ill have to take pictures of what i just did to the doors for weight savings. swiss cheesed and cut the crash bar out. last year my car went the best of 12.30 at 106 1.68 60ft and 7.75 1/8
Feel free to start as many topics as you want.
dynchel- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
I have hear 80 lbs several times, but I have no idea!
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
It doesn't look that heavy to me, that's why I ask.
dynchel- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
I remember a post that one member used his engine crane w/ straps to remove his doors. The doors on these cars weigh about 100 lbs. with the crash bars & glass, etc. Maybe a little bit more with the power window stuff.
77mali- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
I would guess 30-40 lbs between 2 doors. But in drag racing every bit helps. The steel doors on my 70 chevelle are completely empty. There is a small lip around the inner edge for the door panel to fasten to.
bracketchev1221- G3GM Enthusiast
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Re: Are there any drag racers here and is a performance forum a good idea?
I can carry a door by myself. There is no way that bar weighs 80 pounds. It is way too thin.
Brainstain- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
The guy that is doing the work on my car cut the door bar and cut open the end of the door and slid it out and weld the latch area back to the door. i just posted in the project picture thread. door bars are about 25 each but we cut alot of holes in the inner structure to get up to 32 lbs each
oldstofty- G3GM Member
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Re: Are there any drag racers here and is a performance forum a good idea?
I checked my heads last weekend and they are 882's. Where do they stand in comparison to the 416's mentioned.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
416 has smaller chamber so it will boost your compression a good bit which.means more power. 882 heads are 76 cc andi beleive the 416 are 58 cc. Going from a 76cc to a 64 cc raises your compression bt 1.5 points. So if you have 8.5 now with 76cc you will have 10 with tbe 64. 58 will bump tjat number slightly more but mo problem. Or if your worried just use a thicker head gasket. Stock gasket is .041 thick im typing on a phone with my fat fingers. Lol
Joe73- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
So the 882 head is not a very good performance head then. Are there any other good casting numbers to look out for? My uncle has several motors and sets of heads. I had a set of the old double hump heads, but they did not have the large valves. I think they are damaged now though.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
Very good, you are correct with your specs. A side note if you are going to look for #416's the engine I got mine from had a aluminum 4 bbl intake (stamped gm cfm) that's why I gambled on pulling them (and won)Joe73 wrote:416 has smaller chamber so it will boost your compression a good bit which.means more power. 882 heads are 76 cc andi beleive the 416 are 58 cc.
dynchel- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
driveit wrote:I checked my heads last weekend and they are 882's. Where do they stand in comparison to the 416's mentioned.
Here's the deal. The first thing that is an issue is the chamber. They are 76 cc heads. That kills compression and perfomance. The 416's are good in that they are like 58 cc. That boosts compression almost 2 numbers. So if you are 8.5-1 with 76 you could be in the low 10's with 416 heads. However, niether head flows really well. The 416 is better, but not great as has been said. Based on what you have, a 64 cc head is not a bad option either. Like a 186 casting head with 2.02 1.60 valves would be a good improvement.
bracketchev1221- G3GM Enthusiast
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Re: Are there any drag racers here and is a performance forum a good idea?
Ive always read that 882 heads are the best of the worst. The ones i sold ran in the low 13's with the small valves. I think its best to just save up and pic up a 64cc set of aluminums with the big valves.
Joe73- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
So 416s or 186s would be good. Thanks guys. If you know of any others please let me know. I will hopefully get to go on a scavenger hunt this weekend.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
Joe73 wrote:Ive always read that 882 heads are the best of the worst. The ones i sold ran in the low 13's with the small valves. I think its best to just save up and pic up a 64cc set of aluminums with the big valves.
Would love to, but currently I am too far in debt to even put anything back right now. I am getting a 60 over 350 from my uncle and I can pretty much pick my choice of what heads I want if he has them so stock performance is where I am for now. Later on Aluminum will definitely be in the cards.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
I'll keep you in mind when I sell my Nova. I have the original 1970 186 casting 1.94/1.50 heads off the Nova. If the buyer doesn't want them I will let you know.
bracketchev1221- G3GM Enthusiast
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driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
Need head gaskets for the Gen 1 350 I am rebuilding. It is 40 over. Any opinions or recommendations. I need to order them today.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
What bore size would that be? Stock heads btw.
driveit- Donating Member
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Re: Are there any drag racers here and is a performance forum a good idea?
Stock bore on a 350 is 4.00. So 30 over would be 4.030 and 40 over would be 4.040. Why are you going 40 over? Is there that much cylinder wear or damage? Do lots of research.on breakin oils and oil you intend to use normally. Especially if your going to run a flat tappet cam.
Joe73- Donating Member
- Street Cred : 83
Re: Are there any drag racers here and is a performance forum a good idea?
I like the fel pro gaskets. You can go with the stock replacement gasket 7733pt2 or the performance gasket of 1003. I have used the 1003 gasket on my motors.
bracketchev1221- G3GM Enthusiast
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Re: Are there any drag racers here and is a performance forum a good idea?
It is already 40 over, it mostly just needs new gaskets, but I am going go through it all maybe put in my scat crank and bearings. New oil pump, new fuel pump, etc.
driveit- Donating Member
- Street Cred : 15
Re: Are there any drag racers here and is a performance forum a good idea?
I also recommend.the 1003. But u cpuld up the compression by getting a thinner gasket.
Joe73- Donating Member
- Street Cred : 83
Re: Are there any drag racers here and is a performance forum a good idea?
What about this cam. Probably won't get it right now, but a little down the road.
http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=12-210-2&Category_Code=
Also I normally use Castrol in my motors, but have no idea what to use for break in oil. Years ago we just used plain cheap oil, which I have found was a bad idea. Any recommendations?
http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=12-210-2&Category_Code=
Also I normally use Castrol in my motors, but have no idea what to use for break in oil. Years ago we just used plain cheap oil, which I have found was a bad idea. Any recommendations?
driveit- Donating Member
- Street Cred : 15
Re: Are there any drag racers here and is a performance forum a good idea?
They make specific engine break in oil now, but it's expensive! Lucas and comp cams are two suppliers. You can get some Shell Rotella , it's for Diesel engines has a higher zinc level in it. I use Castrol as well, it's less refined than other conventional oils , as long as you change it regularly. The cams they make now aren't prone to the problems as they had in the early 90s.
chevellelaguna- G3GM Enthusiast
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