All those mods your doing, what will be the final outcome you think...HP and Torque? Is there a link somewhere I can read about this so I can get a better idea also? I want to add some performance items to the engine and the sametime replace parts that can give away on a high mileage engine, like some new manifolds hoses and lines. I bought it this time last year with 124k and now it has 145k.

What affect does port and polishing have?

Porting and polishing is enlargening and smoothing openings in an engine. You use a carbide bit, and drill away at it. You can make the parts flow better, and increase power and longetivity. The biggest improvement on my own will be the cam. No one'* done major porting on L27 parts that we know, so whatever increases I see will be the first.

Most modern hoses will be fine if your fluids are regularly changed, and the engine is used.

Don't worry about those for now.

When i'm swapping all these modified parts to my car i'll be replacing all the gaskets. That' will help a lot with durability and longevity.

92-93 SC Series I 205hp-260tq
93-94 SC Series I 225hp-275tq

95-04 NA Series I 205hp-230tq

http://store.summitracing.com/defaul...p&d=1&x=16&y=5

One of these products for polishing?

Can I get a new cam and new pushrods along with new gaskets improve longevity and performance? Replacing cylinders are pretty pricey, arent they?

You '96+ Series 2 N/A guys....aren't you concerned about your trans? There'* a reason they put the HD model in the blown models

Thats one of the main reasons I don't want to mod my engine....trans has 120k on it, I don't want to push my luck with it....

Not really. Trans on mine has 5k miles on it. As long as I dont abuse it I bet I can get a good 100k miles out of it before something might go wrong.

Cut that in half with heavy mods.

Do you know what the transmission can handle up to? Certain amount of torque that is safe for it.

Ok, so modyfing the engine a little bit is ok. Since my tranny is rated at 230 ft.lbs, you think it would be safe to go up to 260ish? How, I dont know yet, but obviously with some type of engine mods.

i would not do too much modding with a 4t60e trans. they cant handle much.

and if you were ever to consider serious modding i would look into swapping to a series 2 engine of either variety (na or SC) for a couple resons. one there is alot more aftermarket support for the series 2 obviously. and 2nd alot more potential.

the series 1 M62 is not a very good source of FI. the M90 is much better and has tons more potential. especially if you would ever consider upgrading to a genV m90.

also, the heads on a series 2 engine are a much better design.

not knocking on a series one though because their bottom ends are ROCK SOLID and can take alot of power without failure. more than a series 2 IMO.

I am actually deabting getting a series one and throwing a t3/t4 hybrid turbo with IC on it. but my concerns are i would still have mediocre heads even wth extensive porting, and there is no readily available transmission for a series 1.

so as i continually debate on my next project i will keep you all posted.

Brad.


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