lt1 vs l98 with lt1 intake
10-04-2005, 12:45 AM
#2
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Originally Posted by Caleb56
Who would win? Anybody have footage or some expierience on the matter?And what about the Superram vs lt1?
Edit:
I read the question wrong... I'd say the LT1 would still win because of a higher compression ratio and a slightly different cam + reverse flow cooling for the heads.
Last edited by k0rv3tt389; 10-04-2005 at 12:48 AM.
10-04-2005, 02:06 AM
#4
Im strongly considering the Lt1 Intake for my 85 auto with bolt ons.Im a little apprehensive because even at like 80mph my car is in the 2500 rpm range with 3.07 gears and every one seems to say that the Lt1 intake gives up alot of low end power.But man would it suck to get blown by on the highway because the TPI ran out of steam at 4000 rpm or so.But I love the way my car feels at 2500/3500 rpm and if I new it would feel the same with the LT1 intake plus some at 4000 plus I would by it for sure.Since I have never driven a Lt1 car I have no idea
Last edited by montie98; 10-04-2005 at 02:10 AM. Reason: Forgot something
10-04-2005, 02:46 AM
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Originally Posted by hippy
LT1 would win because of better flowing heads and exhaust.
A tiny bit more cam, too
10-04-2005, 07:03 AM
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Originally Posted by hippy
LT1 would win because of better flowing heads and exhaust.
10-04-2005, 11:40 AM
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Originally Posted by Caleb56
thats what i thought but what would give the l98 the edge? a new cam?
10-04-2005, 11:44 AM
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LT1 would win, better heads and exhaust flow.
10-04-2005, 11:51 AM
#10
Originally Posted by k0rv3tt389
The LPE 219 cam + SuperRam Intake + chip reprogramming according to many members REALLY wakes up the L98 motor from top to bottom. Easily 350 hp to the wheels!
If I were to keep the 113 heads I would go for duration over lift due to springs and poor upper lift flow. Maybe the SuperProfile L98 cam or a Crane cam that has around 220 duration and .460 lift.
Last edited by hippy; 10-04-2005 at 11:59 AM.
10-04-2005, 03:26 PM
#11
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I looked at many here and seems a 350ci, w/sr, aftermarket heads, 219, is more like 330's-340ish rwhp which would be around 400chp
I thought the 211-219 was the "recomended" one for a 113 head, either way, I think that looking at the flow of a sr, a stock 113 is gonna need some masaging anyways to get the flow#s up to support it
AT that point you would comparing apples to oranges, we are comparing a modded out L98 to an unported, stock cammed LT-1?
I thought the 211-219 was the "recomended" one for a 113 head, either way, I think that looking at the flow of a sr, a stock 113 is gonna need some masaging anyways to get the flow#s up to support it
AT that point you would comparing apples to oranges, we are comparing a modded out L98 to an unported, stock cammed LT-1?
Who would win? Anybody have footage or some expierience on the matter?And what about the Superram vs lt1?
Last edited by mseven; 10-04-2005 at 03:32 PM.
10-04-2005, 04:02 PM
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Just changing to a LT1 intake will not bring the L98 up to that level of performance for the reasons mentioned above:
-exhaust (this is a big deal)
-cam
-heads
-coolant temp.
It's pretty easy to spin a modded L98 up to 6k RPM; there are several intake mods that would make that possible:
1-lt1 intake modded to fit
2-SR
3-MR
4-BM base & LT runners
5-BM base & siamese runners
6-siamese & ported stock base with stock runners
Vic'89 uses #4 and I use #6 intake mods to help our L98s pull well close to 6k RPM.
10-04-2005, 07:00 PM
#13
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Originally Posted by hippy
Not 350 hp with stock heads at the wheels. And the 219 is overkill with these heads. The 113 heads don't flow over .5 lift.
If I were to keep the 113 heads I would go for duration over lift due to springs and poor upper lift flow. Maybe the SuperProfile L98 cam or a Crane cam that has around 220 duration and .460 lift.
If I were to keep the 113 heads I would go for duration over lift due to springs and poor upper lift flow. Maybe the SuperProfile L98 cam or a Crane cam that has around 220 duration and .460 lift.
I have an LT1 intake on my 89 6spd. My heads and bottom end are factory stock, with a comp roller 305 cam. (low lift, long duration)
with my 3.33 gears and street tires I run a 13.0 @ 106.
I've never dynoed it, but I would venture to say its around 290-300 at the wheels.
10-04-2005, 07:42 PM
#14
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" every one seems to say that the Lt1 intake gives up alot of low end power."
If the differences mentioned above were fixed
(head flow , exhaust , etc) I don't see why a LT1 intake equiped L98 should perform any different to a LT1.
Sure a L98 will out pull a LT1 off the line but the LT1 will out run it at the top end and the LT1 is not exactly a pig down low.
At the strip , a C4 is one of the few cars where giving up a little bottom end can be to advantage at least as far as traction control goes.
If the differences mentioned above were fixed
(head flow , exhaust , etc) I don't see why a LT1 intake equiped L98 should perform any different to a LT1.
Sure a L98 will out pull a LT1 off the line but the LT1 will out run it at the top end and the LT1 is not exactly a pig down low.
At the strip , a C4 is one of the few cars where giving up a little bottom end can be to advantage at least as far as traction control goes.
10-04-2005, 08:07 PM
#15
it would take alittle more than the LT1 intake to make the L98 pull the same in the 1/4 mile being both stock. now add true duals to a L98 with both having the 3.07 gear and i bet they run neck and neck.
stock for stock you are only talking .2-.3 second difference given both cars have teh same rear gear.
don't confuse RPM with TOP end pull. you don't need to spin 6k+ to outpull a LTx or LSx car. if the car stays in it's HP and Torque curve longer it has just as good a chance to hold it's own against any other car. i've proven it many times against LS1 Fbody's and LS1 C5's but i know alot of you will claim BS like you usually do.
to me the 2.59 gear is the best gear for a L98 A4 car. it just stays in that power band alot longer. now gear the car and it falls on it's face fast and hard with out a good flowing intake such as an LT1/MR/SR intake setup.
stock for stock you are only talking .2-.3 second difference given both cars have teh same rear gear.
don't confuse RPM with TOP end pull. you don't need to spin 6k+ to outpull a LTx or LSx car. if the car stays in it's HP and Torque curve longer it has just as good a chance to hold it's own against any other car. i've proven it many times against LS1 Fbody's and LS1 C5's but i know alot of you will claim BS like you usually do.
to me the 2.59 gear is the best gear for a L98 A4 car. it just stays in that power band alot longer. now gear the car and it falls on it's face fast and hard with out a good flowing intake such as an LT1/MR/SR intake setup.
10-04-2005, 08:11 PM
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Originally Posted by Mad-Mic
it would take alittle more than the LT1 intake to make the L98 pull the same in the 1/4 mile being both stock. now add true duals to a L98 with both having the 3.07 gear and i bet they run neck and neck.
stock for stock you are only talking .2-.3 second difference given both cars have teh same rear gear.
don't confuse RPM with TOP end pull. you don't need to spin 6k+ to outpull a LTx or LSx car. if the car stays in it's HP and Torque curve longer it has just as good a chance to hold it's own against any other car. i've proven it many times against LS1 Fbody's and LS1 C5's but i know alot of you will claim BS like you usually do.
to me the 2.59 gear is the best gear for a L98 A4 car. it just stays in that power band alot longer. now gear the car and it falls on it's face fast and hard with out a good flowing intake such as an LT1/MR/SR intake setup.
stock for stock you are only talking .2-.3 second difference given both cars have teh same rear gear.
don't confuse RPM with TOP end pull. you don't need to spin 6k+ to outpull a LTx or LSx car. if the car stays in it's HP and Torque curve longer it has just as good a chance to hold it's own against any other car. i've proven it many times against LS1 Fbody's and LS1 C5's but i know alot of you will claim BS like you usually do.
to me the 2.59 gear is the best gear for a L98 A4 car. it just stays in that power band alot longer. now gear the car and it falls on it's face fast and hard with out a good flowing intake such as an LT1/MR/SR intake setup.
Last edited by Caleb56; 10-04-2005 at 10:48 PM.
10-05-2005, 10:35 AM
#18
Le Mans Master
This modified LT1 intake you people keep talking about intrigues me...to the point that I'd actually like to partake in modifying one to fit my L-98. How hard would it be? I got access to certain tools which I'm guesssing are a must for this modification. Thanks to anyone who can offer tips.
10-05-2005, 10:43 AM
#19
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10-05-2005, 01:43 PM
#20
Originally Posted by Caleb56
hey i beat an 2000 ws6 from up top and people keep yelling bs. glad to hear im not the only one to outdue some ls engines.3.54 gears