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

1.6rr?

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Old Oct 9, 2007 | 06:39 PM
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My94TransAm's Avatar
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Default 1.6rr?

Do these reallly help as much as people claim they do, about 20bhp?
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Old Oct 9, 2007 | 09:01 PM
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Idk if it will give you that much to the wheels but its worth a shot because you could always reuse them if u do a cam swap. You might want to buy some new valve springs though depending on mileage the stockers might be about done for and the extra strain of the 1.6rr's might be too much for them.
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Old Oct 9, 2007 | 09:06 PM
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you will wanna swap new springs in there. stockers don't like to do anything more than stock
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Old Oct 9, 2007 | 09:12 PM
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they help but prob not 20hp, i'd say upwards of 10 at the most
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Old Oct 10, 2007 | 08:05 AM
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no matter what the mileage of the car is,i am sure it needs new springs
they were only 85lbs NEW.i would definately suggest new springs like the
patriot bee-hives,retainers and locks along with a set of NSA 1.6 roller rockers,GM guide plates and hardened pushrods.
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Old Oct 10, 2007 | 08:18 AM
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Where are you guys pricing/buying these RR's from?

I will likely be refreshing my valvetrain sometime within the next 6 months.
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Old Oct 10, 2007 | 11:36 AM
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The motor has just under 20K on it.

Originally Posted by jasonp31
Where are you guys pricing/buying these RR's from?

I will likely be refreshing my valvetrain sometime within the next 6 months.
I havent looked yet. I just don't think that they will help, I just wanted some in-put.
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Old Oct 10, 2007 | 12:26 PM
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I put them on and gained a tenth...10 horse. But the springs wont support them for long.
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Old Oct 11, 2007 | 05:10 AM
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Come one Brian you know you wanna throw a cam in it as well while your in there
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Old Oct 11, 2007 | 07:05 AM
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They will help power improve, but I beleive like most claims, its on a engine dyno and its not certain if accessories are bolted on.

Most cam grinds anticipate 1.6 rockes as opposed to stock 1.5's.

As far as choices you can just do a set comp cam pro mags, or aluminums, the weight is not an issue. But strength and reliability is.
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Old Oct 11, 2007 | 08:26 AM
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Yeah I've got the pro magnums with beehive springs....good stuff in my opinion
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Old Oct 11, 2007 | 02:35 PM
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They help some, but they're much more effective with a CAM swap. A good port and polish job also helps significantly. These are more additive mods, where the sum of the parts is more than you'll get out of the parts themselves.
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Old Oct 11, 2007 | 03:34 PM
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i remember i took a stock valve spring and had my neighbor's sister stand on it. ****** binded up so easily. shes only 70 something lbs.
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