350ci LT1 times in 1/4mile with bolt ons/ headers..?
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Joined: Sep 2003
Posts: 449
From: southeast USA
350ci LT1 times in 1/4mile with bolt ons/ headers..?
I want to see some 1/4 mile times with bolt on mods and how much ETs are improved upon by addition of headers (LTs or shorties). I am doing the winter project thing and want to know what to expect from improvements I am planning on doing. I want to know if 1.6 RRs and LT headers are gonna give me a big improvement.
Registered User
Joined: Oct 2003
Posts: 537
From: Was TX, now in Portland, OR
The LT and 1.6 RRs will give you a huge improvement, mainly coming from the LTs (get Jet Hot or Hooker LTs and a Hooker 3" off road Y-pipe). Don't even consider shorties IMO. I'm not sure about the times, but I'd venture to say the LTs and 1.6 RR combo would give you .3-.4 seconds in the 1/4 at least.
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Joined: Oct 2003
Posts: 275
From: The Land Of Oz
Really? LT's and 1.6rr's will get you into low 13's? Thats got to be some serious hp gains.
Actually tho other then for bragging rights for a mostly stock engines Mid lengths are the best, Lt's I think you would have to rev to high to get anything out of em.
Actually tho other then for bragging rights for a mostly stock engines Mid lengths are the best, Lt's I think you would have to rev to high to get anything out of em.
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Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
Headers on the LT1 are serious HP gains. Not just LT's by the way. Mac and ASM and SLP are all mid length and give great gains too.
FYI, I've got some timeslips on my page in the sig. Black car. Basically, before exhaust, I went 13.63@102.32 on a nice cold day. With the exhaust (never put rockers on it) I went 13.09@106.82 on a very comparable day.
FYI, I've got some timeslips on my page in the sig. Black car. Basically, before exhaust, I went 13.63@102.32 on a nice cold day. With the exhaust (never put rockers on it) I went 13.09@106.82 on a very comparable day.
Registered User
Joined: Apr 2003
Posts: 316
From: Idaho Falls, Idaho
With my car weighing 3395 lbs with headers, ram air, zo6 maf, 52mm throttle body, 3.42s, auburn posi, t56, madz28 programming, 1.52 pro mags, and 275/40/17s at 35 psi.. it went
13.5 at 104..
2.2 60ft..
13.5 at 104..
2.2 60ft..
Last edited by J's 82; Nov 18, 2003 at 11:11 PM.
Registered User
Joined: Sep 2000
Posts: 3,223
From: Browns Mills, New Jersey
Originally posted by Montezuma
that almost makes me not want to buy an LS1 anymore
that almost makes me not want to buy an LS1 anymore
Registered User
Joined: Oct 2003
Posts: 275
From: The Land Of Oz
well stock I don't see to many LS1's running 12's, and almost all LT1's i've seen run very low 14's, sometimes I see a 13.9 thrown in there but realisticly thats rare. So I think low 13's would be quite an accomplish, thats stock LS1 territory
Registered User
Joined: Feb 2003
Posts: 923
From: Plainfield IL
On the contrary, I ran a 13.0 in my 98 T/A...and it was an A4. My friend ran a 12.8x in his stock 99 T/A WS6. Its not too uncommon to see a good driver in a M6 runa high 12. LT1's on the other hand, running strong can get a 13.6 13.7 easy. Its bad driving and problems with the car that make most people hit 14's.
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Joined: Sep 2002
Posts: 2,193
From: High Ridge, MO
I was running low 13's @ 104 with just bolt ons in my 95 a4. I put down quite a few ls1 cars, that was through stock manifolds and full exhaust. Converter and a cutout, I would been mid 12 material. Lt1's can run good too. And they cost less.
Benji
Benji
Registered User
Joined: Oct 2003
Posts: 537
From: Was TX, now in Portland, OR
Originally posted by Montezuma
...Actually tho other then for bragging rights for a mostly stock engines Mid lengths are the best, Lt's I think you would have to rev to high to get anything out of em.
...Actually tho other then for bragging rights for a mostly stock engines Mid lengths are the best, Lt's I think you would have to rev to high to get anything out of em.
