LT1 / LS1 in '97 Formula

Dec 29, 2003 6 Replies

I've got a '97 Formula with an LT1 in it. When my wife's car get's paid-off, I would love to put an SLP Stroker Engine package in my Formula ( see link

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This package includes the '97 model year, but it's based on the LS1 engine and I have the LT1. Did some '97s come with the LS1? If so, what would keep me from replacing my LT1 with an LS1 (with the Stroker package)?



When I asked SLP about this the short reply was that they didn't have a stroker package for the LT1, but that wasn't my question...



I've looked at the LT1 to LT4 conversion option, which is obviously a LOT cheaper. Are there any other big HP options that I should consider?



Thanks! SR-71 (Blackbird) '97 Firebird Formula



SLP Ram-Air Hood SLP Cold-Air induction SLP Flow-booster SLP 160deg Thermostat Hooker Aero-Chamber Muffler


The LS1 was first used in the F car in 1998. 1997 was the first year for the LS1, and it debuted in the Corvette.

Same with the L98 (lags behind the F car a year or two). L98 was first used in

1985 in the Corvette and then in 1987 in the F car. LT1 first used in 1992 on the Corvette and then in 1993 on the F car. Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...

I don't know why I didn't think of that...

Thanks for the clarification!

The LS1 was in the vette in 97, probably what they were refering to, As far I I know They didn tput any LS1s in Production 97 F-bodies,

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You'd need to put new motor mounts in to fit the LS1 block into an LT1 car, but then again, if you could afford the ridiculously absurd price of $12 grand for a new motor, I'm sure you could afford the cost of welding new mounts!

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Absolutely correct.

Martin '01 Formula - MTI Air Box Lid, K&N Filter, Hurst-6, SLP Cold Air Induction & Smooth Intake Bellow Corsa Catback w/Premium Tips '83 V45 Magna

uhmmmmm....don't forget, wiring harness, intake, etc....

Martin '01 Formula - MTI Air Box Lid, K&N Filter, Hurst-6, SLP Cold Air Induction & Smooth Intake Bellow Corsa Catback w/Premium Tips '83 V45 Magna

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