Vortec 355ci Healthy cam, what'll it run
#1
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Joined: Sep 2004
Posts: 381
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From: Bement IL, Champaign,IL
Car: 1985 IROC-Z Silver
Engine: Vortec 5.7L
Transmission: WC-T5
Axle/Gears: 3.23 disc brake 10 bolt
Vortec 355ci Healthy cam, what'll it run
355ci 10.0:1, Mildly ported vortecs-studs and guideplates, RPM airgap, 236/246 .510/.512 crane cam
85 iroc 5 speed 3.73s?
Also, anybody have an idea of kind of HP it'll put to the tires?? I'm thinking about 320-350rwhp.
85 iroc 5 speed 3.73s?
Also, anybody have an idea of kind of HP it'll put to the tires?? I'm thinking about 320-350rwhp.
Last edited by z28freak84; 05-12-2006 at 05:29 PM.
#5
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Joined: Jan 2002
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
high 11s to mid 12s just like was said earlier. i have basically the same combo, can't wait to try it out this year and see how it does.
#6
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Joined: Sep 2004
Posts: 381
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From: Bement IL, Champaign,IL
Car: 1985 IROC-Z Silver
Engine: Vortec 5.7L
Transmission: WC-T5
Axle/Gears: 3.23 disc brake 10 bolt
Thats what I want hear. High 11's. I will also be using a set of Hedman longtubes with an X-pipe. The car is the sought after '85 IROC-Z 305HO-Also its Silver, very RARE. I already have the cam from a previous 406ci. The motor will actually probably stay at 350ci. Stock motor from 98 Suburban. I acquired this motor for the small price of $50 from a friend who had to replace it do to spun rod bearing. Another buddy has an extra crank-1-piece seal. An older friend of mine, he is like a grandpa, will help me cut the guides down, cut the spring pockets, and install studs and guideplates. I will do a bowl-blend and port match, and John will also do a 30-degree backcut on the valves. I will probably try some 1.6 rockers for a .544/546 lift.
Eventually a gforce T-5 too.
I would like to see 115+mph. at least 113-114mph.
Eventually a gforce T-5 too.
I would like to see 115+mph. at least 113-114mph.
Last edited by z28freak84; 07-30-2006 at 04:27 PM.
#7
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Joined: Sep 2004
Posts: 381
Likes: 1
From: Bement IL, Champaign,IL
Car: 1985 IROC-Z Silver
Engine: Vortec 5.7L
Transmission: WC-T5
Axle/Gears: 3.23 disc brake 10 bolt
Originally Posted by chevymec
I have a smaller cam, same motor setup somewhat, 5 speed, 4.10 gears and DOTs and ive gotten a best 12.56@110 .
your car is why I want to do this.
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#9
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Joined: Sep 2004
Posts: 381
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From: Bement IL, Champaign,IL
Car: 1985 IROC-Z Silver
Engine: Vortec 5.7L
Transmission: WC-T5
Axle/Gears: 3.23 disc brake 10 bolt
Originally Posted by unknown_host
Same setup, smaller camshaft and went 12.28 @ 111.85 on street tires. What does your car weigh with driver?
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