Hey guys i have a lx sedan. Got a fresh 308 rebuilt with 20thou bore. Mild cam. Vn heads. 600 holley square bore. Behind is a t400 with a 2500 stall and then a pissy banjo 2.8 something ratio. What do you think ill pull on the 1/4 roughly
what do you think ill run on the 1/4
Started by
_faliba23_
, Sep 07 2014 08:47 AM
25 replies to this topic
#2
kiwi-lilj
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Posted 07 September 2014 - 08:48 AM
16.5
#4
kiwi-lilj
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Posted 07 September 2014 - 08:53 AM
Bear in mind I have zero experience, so I am highly likely to be wrong. :-)
#6
wot179
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Posted 07 September 2014 - 08:59 AM
16.5 sounds about right.
#8
_LS1 Taxi_
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Posted 07 September 2014 - 09:31 AM
15 flat with 2.78 ratio diff.
Change that to something more race appropriate and you should go 13's
#9
_faliba23_
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Posted 07 September 2014 - 09:53 AM
Cool thanks. What do you recommend 3.55?
#10
_LS1 Taxi_
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Posted 07 September 2014 - 10:06 AM
If you want a good all rounder (ok for strip, ok for street) then yes the 3.55 is a good ratio for you. If you want to be quicker on the track and not worried about being a pain on the street then 4.11 or 3.9 would be the go.
Depends on what you want to do with your car.
#11
_faliba23_
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Posted 07 September 2014 - 10:17 AM
Just want a good street car, quick off the mark anf punchy out of corners
#12
Redslur
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Posted 07 September 2014 - 06:05 PM
With a set of gears a mid to high 13 is very likely. With a 2.78 you be be around the 14.5 mark. 16's is way off in my eyes....stock 5000's will do a high 15 with a 2.78 diff.
Edited by Redslur, 07 September 2014 - 06:06 PM.
#13
wot179
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Posted 07 September 2014 - 06:09 PM
Its pushing through a dirty great bleeder, not a 4 speed.
That's at least 50hp off the top.
I would be shocked if it runs a 15 at all.
#14
Redslur
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Posted 07 September 2014 - 06:33 PM
14.5's all day! A stall negates the laziness of the auto!
#15
wot179
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Posted 07 September 2014 - 06:37 PM
It doesn't negate the horsepower drain of a TH400
Take it to the track and let us know who was closest.
#16
N/A-PWR
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Posted 07 September 2014 - 06:47 PM
Found this HJ 308 x 3300rpm stall x 2.78diff @ 13.3sec 1/4:-
VN heads too
#17
_faliba23_
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Posted 07 September 2014 - 06:52 PM
Yeah will do. Keen to find out how it goes. The t700 I heard is a much better box than t400 for performance. 1st and 2nd have low ratio and also heard they have overdrive
#18
Redslur
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Posted 07 September 2014 - 07:23 PM
G
It doesn't negate the horsepower drain of a TH400
Take it to the track and let us know who was closest.
Gees,I am running a T700 and a small stall. Didn't suck the life out of my quater mile pass. A T400 with a stall will kill a M21 off the line and down the qaurter. Hence me saying a stock 500 does high 15's. We will have to agree to disagree. A VN head 308 with small cam, and an auto and stall should do a 14 second pass easliy!
#19
_faliba23_
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Posted 07 September 2014 - 08:18 PM
Yeah will do. Keen to find out how it goes. The t700 I heard is a much better box than t400 for performance. 1st and 2nd have low ratio and also heard they have overdrive
#20
_Bomber Watson_
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Posted 07 September 2014 - 08:19 PM
Moreso the T700 runs the T350 gearsets, a lot smaller and lighter.
Cheers.
#21
gtrboyy
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Posted 07 September 2014 - 08:37 PM
Low-mid 14's is around the mark seen for std efi 5l in torries.
Decent size stally & gears some got to mid 13's at best,std engine,2800 stally & 3.7-4.11 gears...high 12's with good compression bump & small cam.
Start with some shorter gears & good tyres then see what happens
#22
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Posted 07 September 2014 - 08:58 PM
Low 14sec. Hope the banjo stands up to your day at the drags...Goodluck
#23
unclefestal34s
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Posted 07 September 2014 - 10:36 PM
first of all depends how well you can drive..
car should run high 13s to a very low 14 with little fuss if its ok tune and depends a lot on your driving ability..
with the vn heads and bit of camshaft i personally wouldn't expect any less matter of fact I would I really expect it to run a lot harder,..
based on some of my recent and past experiences..
a couple of months ago at a muscle car shootout I ran my stock red L34 290hp factory L34 HQ heads 4speed m21 3.08 lsd diff banjo ..
car went 13.7s @ 103mph quite easily and also ran the speed of 106 mph all these were done going through the traps in 3rd gear..
so I would certainly expect a 308 that's be vn headed and auto to go a lot quicker..
#24
_ljxu1torana_
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Posted 07 September 2014 - 11:51 PM
How long is a piece of rope?
#25
unclefestal34s
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Posted 08 September 2014 - 07:11 AM
even a length of rope has a limit
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