Estimated 1/4 et?

[a t5 chevy]

My daily driver is a 85 c-10 2wd swb. This past weekend I took it to the local dragstrip to see what it would do. My best run was (dont laugh) a 16 flat in the 1/4. My main problem was that i couldnt get it to hook up until i hit 2nd or 3rd gear (i had my half bald stock tires on the back). This was nowhere near what I think it could run (mid 13s). What do yall think would be a decent time for me to expect if i could get traction with its current setup, or have i set too high of an expectation? Any help would be greatly appreciated.
Here are some basic specs on the truck:
'77 350 sbc
stock longblock
comp cam (230 duration/480 lift) w/matching valve springs
holley 4bbl intake
600cfm holley carb
headers w/3" duals
Godley performance 350 trans w/shift kit
2300 stall
12 bolt open diff w/2.73 gears
lowered 5"f/4"r
18" coys wheels front and rear
weight is pretty close to stock

As my budget allows, the next upgrade will be 3.42 gears and a limited slip.
thanks

[Captkaos]

You might get low 15's.  You will need at least 450 hp at the tire to get into the 13's...

[eventhorizon66]

A CC Magnum 280 for your daily?  Cool.  With that cam the cork in your performance is the heads and the CR.  You should have the heads pocket ported and machined for large valves.  What is the compression ratio?  With a stock short block, probably around 8:1, right?  That cam is gonna want at least 9:1, I would think.  You could always kill two birds with one stone and bolt up a set of vortec L31 heads, with their 64cc chambers.  But those heads are gonna want a dual pattern cam (maybe an XE274) as they have E/I ratios in the 65-70% range.

[a t5 chevy]

Thanks for the help. Yep its the 280 magnum, has a good thump but likes gas. The CR is stock as far as I know. I plan on getting a pair of Summit brand iron heads 2.02/1.6 with my tax return. Until then Ill try to lighten the truck as much as I can. What would be some good parts to remove to lighten the truck? There's a test and tune at the local track on the 11th that Im gonna try to go to, hopefully with a different rearend and some drag radials. again, thanks for the help and keep it coming.

[bigkountry]

If you are spinning into 2nd and 3rd, making it lighter will make this worse. You don't really need to worry about removing weight until you get her to hook out of the hole. Do they use track bite or any other surface prep (traction aditive) at the strip?

The upgraded gears and posi will help out alot, but like stated above you really need some heads on that puppy. You have the exhuast took care of, she needs to breathe a little better though.

Find a set of double hump heads and bolt them on, around here they can be had for alot cheaper than a set aftermarket heads.

[team39763]

I think a set of slicks or ET streets would make a huge difference.  A guy from my town would lose pretty bad to a headers only Dodge Ram(Hemi).  After he installed his posi(actually a spool) and put on some sticky tires(ET Streets), he beat the Ram by a few cars.

[Blue 82]

What's your MPH?
how bad was your 60' time?

4400 lbs with driver + 300 hp approx = 15.20's with perfect hookup

You are gonna need another 100hp to get high 13's low 14's

Have you seen the Patroit heads
here's a set on Ebay
but Patriot sells factory direct (approx $800)

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33617&viewitem=&item=270223060227&_trksid=p3907.m29

[a t5 chevy]

Yeah they use some kind of chemical on the track. Everyone that had decent (not bald) tires hooked up real good. I went to the junkyard at lunch trying to find a rearend, but every 12 bolt posi i ran across was in a 4wd (6 lug). What vehicle (pickup, blazer, burb) would be my best bet at finding a 12 bolt posi in with 5 x 5 lugs? I found some camel hump heads, but they're gonna need a little work before they're ready to go on. Also what drag radials would you suggest for a tight budget? Thanks
R/T: .538
60': 2.497
1/8: 10.319
MPH: 69.77
1/4: 16.001
MPH: 84.13

[red4wd]

Welcome to the board t5...you can use the 4x4 rear end if you are willing to swap your axles and brake drums from your 2wd rearend. 

[a t5 chevy]

Thanks. I'm definately gonna try that. Sure beats $800+ for a new limited slip, axles etc. In general what was the most common gear ratio on 4wd rearends?

[HAULIN IT]

I personally see a few things of mention here. 1) That is way too much duration for a stock 8.1 engine, all of your cylinder pressure is lost. 2)The 2.73 one wheeler rearend isn't doing you any favors 3) Regular street tires are not going to produce the best track times. On a side note, I don't believe you truck is quite as heavy as the 4400 mentioned, Have you weighed it? My SWB truck with the big block Olds weighed 3910 w/me, last time on the scale. This is a complete truck, heater, carpet, bench seat, but no tailgate. I'm about 230lbs. However I have to say "I think your a bit optimistic" on you 1/4 mile expectations. Don't bother with the old double hump heads, by the time you buy them & get new guides, seats, valves, springs & machine work, you could buy A/M heads. You should plan on small chamber heads to help raise the compression.  Just my take on it, Lorne

[Captkaos]

4400 would be closer to a long bed that is fully loaded with a 454 generally they average 4200lbs.  Short beds run around 3900lbs

[SUX2BU99]

3900 lbs sounds right. I'm cautious though about saying 400+ HP is needed to get it into the low 14s. I'm just saying this though from my own knowledge that my 4400 lb 2005 Dodge Magnum R/T with it's stock 340 HP Hemi can do mid-low 14s, even with it's ridiculous 2.82 rear gear. The 2.73 gear and the tall-gear TH350 maybe is the key factor there, along with the stock heads.

For heads, you might as well go GM Vortec, Dart Iron Eagle S/S ($695 pair with 2.02 valves) heads or the Summitt's like you mentioned. Camel heads are alright, but now there are better for same or less money. Cheapest alum. heads out there are those Patriot's as mentioned. Don't go over 180cc intake runner volume though IMO. That 3" dual exhaust too would make better use of a better flowing head.

[Captkaos]

I said 450 for the 13's not 14's?

[SUX2BU99]

True dat, you did. Are there very many people here that run say sub-14 second 1/4 miles? I know team39763 with the 6.0 swap in his 82 runs high 12s which is amazing considering how mild his setup is, although not many of us run 4.56 gears and slicks!