How strong are the GN 3.8's stock internals?

Fliquer · 11-09-2002, 01:28 AM

How much boost can the '87 Grand Natn'ls handle on stock internals?

fastazzhonda · 11-17-2002, 12:06 AM

I think about 200hp would be all think a Buick 6 would put out. They are all old people rides.:smoka:

Fliquer · 11-17-2002, 12:47 AM

You obviously dont know what youre talking about. Grand nationals came with 250hp and 350lbs/foot stock. Their engine comes turbocharged stock.

Rens87GN · 11-19-2002, 05:58 AM

How much boost or how much HP? I run 22 pounds of boost all the time thanks to my SMC alky injection setup. No problems with that. As for HP...most of the guys I have with run mid 11's and then are all still on stock internals. I think you can run high boost all the time as long as you don't knock and thus nothing gets hurt.

fastazzhonda - the NA 231 Buick makes about 110, the turbo but non intercooled ones make 200 or so and the intercooled ones make from 250-275. Those are of course stock and kind of generalized.

They sure are fun cars to modify. I added aftermarket exhaust, K&N intake and raised the boost and run low 12's on slicks......what a rush.

crazygn · 04-07-2003, 08:51 AM

I also run 20 psi on pump gas all the time and 25psi on cam2, all stock block, crank, heads, rod, pistions, my buddy just ran 10.4 @133mph, with stock crank and rods.

Hypsi87 · 08-25-2003, 07:51 PM

the main consern is pre deatonation. keep that out of your block and you be ok. i have a dyno sheet for my car that reads 453HP with what little mods i have and the only thing i have done to the engine is repace valvesprings. i run 12.68. 12.70's all day with street tires (just bought slicks yesterday can't wait

)

as for fastazzhonda

, i have yet to find a street honda that only has 1,000$ in it and isnt complety stripped to the bare bones that can hold a candle to me

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