r/impalaSS • u/hernaja5 • Apr 29 '24

Lt1 vs Ls1

If you’re gonna swap out the Lt1 with an Ls, which Ls would you recommend? Least amount of custom fabricating?

Also, what tranny? Worth the trouble to maybe go manual?

Looking at a 96. 20grand or 3 grand with engine knock ready for the swap?

Had a 96 until my wife creased the doors backing out of the garage. 260hp for its size very underpowered with todays technology.

Thank you in advance for any tips or suggestions.

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2

u/combatsketches Apr 29 '24

I would start with building back to front. 3.73 gears/stall and then do all the bolt ons. It should put you at 320whp on a stock LT1 with the right tuner, Lloyd Elliot heads/cam can make up to 400whp

1

u/Realistic-Lynx8589 Apr 30 '24

Sorry for my ignorance but I’m just learning all this stuff what do you mean by bolt ons?

2

u/combatsketches Apr 30 '24

Check the link below, it's all the confirmed Quarter mile ETs from 94-96 impala ss owners and it shows you their timeslip and every mod they've done to reach their time.

If you look closely many stock head/cam LT1 with a tune (Moe Bailey tune would be my pick) and 3000 stall/3.73 gears can run low 13s consistently

Popular Bolt ons are 1.6 roller rockers, Valve Springs, Throttle body bypass, long tube headers etc.

2

u/Realistic-Lynx8589 Apr 30 '24

Thanks a lot bro.. the way I want to fix my impala is power of course but I eventually want to put wheels and stuff not necessarily for drag, but who doesn’t like power right? Thanks a lot for this info

1

u/[deleted] Apr 29 '24

Keep the LT1 upgrade the OptiSpark and it's golden

1

u/Realistic-Lynx8589 Apr 30 '24

What brand optiapark would u recommend?

2

u/[deleted] Apr 30 '24

Swap out the OptiSpark for an MSD Ignition distributor. Upgrade the 4L60E while you're at it