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Old 07-17-2006   #21
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Join Date: Jun 2005
Location: Kingston, Tn
Posts: 578

Re: suggested mods - 400 HP from 1989 L98

Originally Posted by MunsonGTA
the title says 400 hp, not 400 rwhp. how much did the lt1 swap cost you?
Including the cost of the motor/tranny and everything to install it? Around 3k.

Unfortunatly if you are not wanting to take the motor apart, a turbo or a sc is the only option you have. You will end up buying a set of heads, cam, intake at least to get the power up there.
1987 GTA, LT1/T56 BW 9bolt 3.70 posi
1 of 372 Medium Russet Metallic
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Old 07-18-2006   #22
Bad luck or no luck
Join Date: Jun 2004
Location: Ravenna, OH
Posts: 1,948

GTA Year: 1987
GTA Engine: Custom
Re: suggested mods - 400 HP from 1989 L98

i'm over 400 hp with an L98 at about the cost of 2200 or so. heads - 750, hsr setup - 425 shipped, cam - 180 shipped, custom tune - 200, block work after i blew apart my rings - 200, new 350 rebuild kit with gaskets - 350, 30#/hr svo injectors - 100.

grand total - $2205 + a few bucks for odds and ends

i still run the stock distributor, stock TB, stock rods, stock crank, stock pushrods, stock lifters
87 GTA: Forged 408 LSX short block, TEA stage 2 cnc ported 243 heads, BTR Stage 3 stroker cam, Fast 102 intake, NW 102 TB, Longtube headers, custom 411 ECM, custom harness, custom tuned, Performabuilt stage 2 4l60E with PTC 2800 stall, 9 bolt rear with 3.70 gears and TAP girdle.

11.16 at 123 mph.
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