10 sec stock bottom
Thread Starter
Teching In
Joined: Jul 2010
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10 sec stock bottom Long time reader, wanting some impressive stock bottom end results that many have shown.
going to ai for the h/c combo but before bombarding them with my newbieness I wanted to try to learn on here.
At this point I'm looking to hear what stock bottom end, untouched 350ci guys are revving to. Also any advice on trying to keep it alive for atleast a little while?
So far I've got..
-cai
-longtubes with 3" dumped bullets
-4.10s
-yank 4000
-built trans with sufficient rear end
-55lb injectors incase I go e85
Not sure on fuel pump as I read walbro will die on e85
Which bearings need replacement?
Melling oil pump?
Looking at an estimated 3300 race weight, I'm trying to get as deep into 11s as I can get all motor and hope I'll only need 50-100 shot to break high 10s. Any tips?
going to ai for the h/c combo but before bombarding them with my newbieness I wanted to try to learn on here.
At this point I'm looking to hear what stock bottom end, untouched 350ci guys are revving to. Also any advice on trying to keep it alive for atleast a little while?
So far I've got..
-cai
-longtubes with 3" dumped bullets
-4.10s
-yank 4000
-built trans with sufficient rear end
-55lb injectors incase I go e85
Not sure on fuel pump as I read walbro will die on e85
Which bearings need replacement?
Melling oil pump?
Looking at an estimated 3300 race weight, I'm trying to get as deep into 11s as I can get all motor and hope I'll only need 50-100 shot to break high 10s. Any tips?
10 Second Club
Joined: Oct 2007
Posts: 2,630
Likes: 28
I rev mine to 6800-6900 no problem. Mine was rebuilt with new bearings and a new oil pump. Has amazing oil pressure. I just ran a bunch of 7.30's (1/8th) at our local track which is notoriously slow (about a tenth) in the summer heat. Not to bench race but i'm sure it will run 7.2's/11.25ish in the 1/4 as it sits now in the heat of the day. I have some more weight to take out, and i'm going to try to get a 10.99 sometime in the late summer/early fall when we get a "good air" day.
I would get the car as light as possible. 3300 race weight is light but you can get it down 150lbs from that without spending too much coin. Keep in mind you will need a cage. Get a chromoly one when you do. You are going to need a tall rear tire to offset those gears. If you want to run in the high 10's you'll be around 120mph. Combined with an auto that will slip a bit up top, I don't think a 26 inch tire will get you there.
I would get the car as light as possible. 3300 race weight is light but you can get it down 150lbs from that without spending too much coin. Keep in mind you will need a cage. Get a chromoly one when you do. You are going to need a tall rear tire to offset those gears. If you want to run in the high 10's you'll be around 120mph. Combined with an auto that will slip a bit up top, I don't think a 26 inch tire will get you there.
Thread Starter
Teching In
Joined: Jul 2010
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thanks for the reply it sounds like you're right there NA!
after reading, it seems like the general idea for 4.10s is 28" diameter..
i'm almost wishing i had more gear because i'm seeing some awesome 60s from people running 30", but to cross the traps at 6900 and 120mph i would need around a 4.80 gear.
after reading, it seems like the general idea for 4.10s is 28" diameter..
i'm almost wishing i had more gear because i'm seeing some awesome 60s from people running 30", but to cross the traps at 6900 and 120mph i would need around a 4.80 gear.
I went 10's on a stock bottomend 6yrs. back and it wasn't very hard to do once you add a little n2o. Any decent ported heads/cam, longtube headers, good exhaust, boltons, 3.500 stall, 3.42-3.73gears, 26-28" tall drag radials, little weight reduction, minor suspension work should run 11's on motor. So add a 100shot to that and your in the 10's very easy. My car would run 11.20-40 depending on weather and run low 10's on 150HP n2o with stock 3.42's in the 10bolt. The car ran 10.17@133mph on 150HP with 3.55's in an 8.8" rear with a best of 9.83@136mph on 200HP of n20 but that was a built 355" LT1 with good pistons rods etc.... Later Clint
Walboros are for volume not pressure, ive seen people run on e85 over a year now with Walboro 255 with no problem, just not high fuel pressure above (75psi) I personally run two 255s on my cars just because it makes me feel better and 100psi is no problem with two..
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10 Second Club
Joined: Oct 2007
Posts: 2,630
Likes: 28
thanks for the reply it sounds like you're right there NA!
after reading, it seems like the general idea for 4.10s is 28" diameter..
i'm almost wishing i had more gear because i'm seeing some awesome 60s from people running 30", but to cross the traps at 6900 and 120mph i would need around a 4.80 gear.
after reading, it seems like the general idea for 4.10s is 28" diameter..
i'm almost wishing i had more gear because i'm seeing some awesome 60s from people running 30", but to cross the traps at 6900 and 120mph i would need around a 4.80 gear.
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Teching In
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Yeah I'm on a lower budget for this build, glad high 10s with a small shot doesn't sound impossible..
I'll have to look into dual walbros then, I appreciate it
So with slippage the rpms would be higher than the mph reflects? Then if I understand correctly, a little too much gear is ok.
You guys running bigger than 28" tires?
I'll have to look into dual walbros then, I appreciate it
So with slippage the rpms would be higher than the mph reflects? Then if I understand correctly, a little too much gear is ok.
You guys running bigger than 28" tires?
Yeah I'm on a lower budget for this build, glad high 10s with a small shot doesn't sound impossible..
I'll have to look into dual walbros then, I appreciate it
So with slippage the rpms would be higher than the mph reflects? Then if I understand correctly, a little too much gear is ok.
You guys running bigger than 28" tires?
I'll have to look into dual walbros then, I appreciate it
So with slippage the rpms would be higher than the mph reflects? Then if I understand correctly, a little too much gear is ok.
You guys running bigger than 28" tires?
It's not easy to get into the 10's on motor with a 350" LT1 N/A but plenty people have made it just not very many had a stock PCM. My car ran 11.009@123mph with the 355" LT1 and would have gotten into the 10's on the stock PCM and small cubic inches but I only made 5-6 passes before the oilpressure dropped and I built the current 383. I used the same LE heads/cam, everything except for the rotating assembly, crank, rods and pistons. Now the car ran 10.82@127mph on it's second outing. I am going to step up the cam since it was designed for my 355" LT1 engine but works good in a lower rpm 383 too. I also added a singleplane intake and a Fast management so it should be cooking soon. Later
Last edited by T/ALT1; Jul 7, 2010 at 10:47 AM.
Thread Starter
Teching In
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TAlt1.. that is one of the sickest launch pics lol
I can't help but wonder if you would have seen 10s with more diameter. Was that the braked th350 w 4000vig at that point?
I can't help but wonder if you would have seen 10s with more diameter. Was that the braked th350 w 4000vig at that point?
Last edited by ltonenewbie; Jul 8, 2010 at 03:14 AM.
I never got a chance to T-brake the 355 b/c I was just testing/tuning when the bottomend went south. I am sure it would have ran 10.90's with 123mph. Later
Yeah thats doable with good suspension and 60' times. I ran 10.80's@125mph on a stone stock LT1 shortblock with LE1 heads, stock valves/ small hydraulic roller cam, boltons, stock suspension with a 150shot back about 8yrs ago. I did that with the stock 10bolt with 3.42's. I am sure if I put a stock Lt1 in my car it would run high 11's N/A so a 100shot and it would go 10's. JMO
