[Frankylo]

How much of a difference is a 1991 L98 to a 1994 LT1 both being automatic??? 1/4 mile differences and such.... Thanks ya'll

Frank

 

[Dan85Vette]

A few tenths in terms of 1/4 mile and such.

The 1991 L98 should run 0-60's mid to high 5-second range (5.5-5.8) where the 1994 LT1 should run strong mid 5-second range and even dip to a lower 5-second times (5.2-5.5).

The quarter mile for the '91 L98 would be a very high 13 second range and very low 14 second run. Say 13.85-14.2.

Where the '94 LTI would run the 1/4 mile about mid 13's (13.4-13.8).

Obviously these are just some general stock ranges. Weather, traction, driver skill and car condition all play as big factors in getting real world results.

Both cars pull FAST but the LT1 simply pulls longer thanks to its revised induction.

 

[Frankylo]

Well my L98 also has Long Tube Headers, K&N Filter, a Full Stainless Steel Borla Exhaust System. And the previous owner also claims
HIGH PERFORMANCE ROLLER LIFTERS
CAMS HARDENED PUSHRODS
ALUMINUM FULL-ROLLER ROCKER ARMS
BORED .030

And it is strong, honestly i think it would of woped my Previous 1994 LT1

 

[Dan85Vette]

Well my L98 also has....

Well than that's a whole other ballgame. Always should mention the mods, that's key in understanding what's what. Since the L98's stock exhaust left MAJOR room for performance gains, so you'd expect a difference especially with a modded L98 against a stock LT1.

honestly i think it would of woped my Previous 1994 LT1

Sounds like a fair statement. :devil:

 

[SimpleLT]

Long tubes and a cam upgrade alone should easily help the L98 hang and probably whoop an LT1 in stock form.

But then again, a cam swap, 1.6 RR, ported throttle body, and some long tubes will easily make the LT1 put down over 300 to the wheels.

These engines are so mod-friendly, I love it! :cheers:

 

[drmrman]

These engines are so mod-friendly, I love it! :cheers:

:agree: :thumbsup: artyon:

 

[cheetah]

The L98 has more low end torque than the LT1. With your mods, it ought to be plenty more. You will have trouble keeping street tires from breaking loose at the line. You never know what you're going to run until you get to the track. All things being perfect, it oughta run pretty freakin' good. My '91 vert stock with no air cleaner ran 14.1 with Auto, 2.59 and street tires. Stock '93 vert with all the same as above ran a 13.35 once. Mostly mid 13's.

 

[Frankylo]

Right now I just need to swap the transmission with one that I got at the house and that is gonna be the first thing I do... take her to the track.artyon:

 

[driley]

The L-98 are torquey motors, but because of the long runner tubes, hp is limited unless they are changed with an aftermarket set-up. The Lt-1 solved that problem by having a plenum attached straight to the manifold. But both motors can be made better and both have their weaknesses. I prefer the L-98 mainly for its looks. I've always loved the tarantula looking plenum and runners. I currently have 4 of them. 1.)1988 model out of Trans Am in my vette 2.)1985 original motor out of my vette 3.)1985 305 TPI in my girlfriends 1985 Z28. 4.)1989 out of wrecked corvette convertible being built as blower motor for my girlfriends 1985 Z28. TPI is gonna go on this one.

 

[Frankylo]

Where can I find some intakes and runners for our L98 Vettes? I have been looking but ppl have been telling me that some won't fit under our hoods.... Any recommendations that would be good with my mods.... And Drilley why don't you go withe the blower motor in ur Vette? Thanks

Frank

 

[driley]

TPIS sells an intake for the L-98 that eliminates the runner tubes. Accel makes a wierd looking plenum that has short runners under it. But the nicest looking upgraded runners and lower intake come from Edelbrock.Compression is a little high for a blower in the motor I have in my vette now, but I have been throwing around the idea of a under the hood supercharger from powerdyne for it. I just put the engine in my vette a little over a year ago, it runs and drives great, has no issues, runs cool, holds great oil pressure, and gets 30 mpg which is better than new. I'd drive it to California right now. My girlfriend has been bugging me for years to build her a blown camaro, and since she donates money on half our car fund, it is time to do it. She let me do my vette first though, and believe me, we will take turns driving them. :thumbsup:
http://www.edelbrock.com/automotive_new/mc/manifolds/chevy_sb_fuel-inject.shtml

 

[jetblackc4]

ppl are gonna hate me for this one!

but im going carbed only for the fact that the whole setup is going to cast me less the 200$$$,i'll be prayin to get into low 12's

 

[Frankylo]

Has anyone ever seen this before or tried it? Seems kinda hard for a beginner (my opinion). Convert a L98 to LT1 I have pics just give me ur e-mail and I'll send you some pics.

 

[-=Jeff=-]

Has anyone ever seen this before or tried it? Seems kinda hard for a beginner (my opinion). Convert a L98 to LT1 I have pics just give me ur e-mail and I'll send you some pics.

by swapping the motor? or jsut the intake? there is a LT1 intake swap for the L98 where a hole is drilled for a distributor..

Otherwise for intake options for the L98:

-Superram, made by Accel but I believe LPE designed it

-Miniram, made by TPIS

-Stealthram, made by Holley, BUT the plenum box hts the hood, so it has to be modded or get a high rise hood.

-Converted LT1 intake for use with a distributor.

those are the main ones outside of the different runners made fo rthOEM style set-up

 

[Frankylo]

By just swapping the Intake from our L98 to the LT1. I try to paste it but it didn't want to.... It just specifies that lots of Low end torque is lost but high is gained. Has anyone done this?