LT1-LT4 Modifications 1993-97 Gen II Small Block V8

93 lt1

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Old

Mar 15, 2007 | 10:26 PM

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93 lt1

are there any advantages of a 93 lt1 over 94-97? disadvantages? which has more advantages?

Old

Mar 15, 2007 | 10:44 PM

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Quote:

Originally Posted by yaboiJ

are there any advantages of a 93 lt1 over 94-97? disadvantages? which has more advantages?

93 is speed density only which is more performance oriented, 94-97 are speed density and mass air flow. 94-97 can be tuned out to speed density only and ditch the MAF restriction. 93 is batch fire injection (all injectors on one bank fire at once) while 94-97 is sequential injection (only the injector for the cylinder on its intake stroke fires). a 94-97 tuned to speed density mode is essentially equivilant to a 93. The sequential injection mainly helps with emissions. Some of the later years (96+?) had powdered metal rods instead of the "pinkies" in the 93-95s. The head castings for 96+ are also different, they flow more in stock form but cant be ported as far as 93-95. Please note my years for the changes in rods and headcastings might be off so don't take them as golden.

Old

Mar 15, 2007 | 10:58 PM

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but i read that 93 come with 275 hp and 94-97 have 285 hp..... what makes that difference? is it the MAF?

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Mar 16, 2007 | 12:31 AM

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Originally Posted by yaboiJ

but i read that 93 come with 275 hp and 94-97 have 285 hp..... what makes that difference? is it the MAF?

96-97 (and cali 95s) were 285 hp and thats cos of the dual cat y-pipe

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Mar 16, 2007 | 12:41 AM

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93's had a bigger cam

Old

Mar 16, 2007 | 01:01 PM

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Quote:

Originally Posted by thebufenator

93's had a bigger cam

Nope, 93-95 had the same cam they changed cams in 96 and in 96 they made the cam a few degrees smaller and gave more LSA.

Old

Mar 16, 2007 | 01:04 PM

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93's came with a .460" lift camshaft. 94 on came with .449".

I saw this on speeddensity.org.....I assumed it was true

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Old

Mar 16, 2007 | 01:06 PM

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Quote:

Originally Posted by thebufenator

I saw this on speeddensity.org.....I assumed it was true

93-95 has .460 on the exhaust .450 on the intake see http://www.automotiverebuilder.com/a...nts/99928p.gif

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