305 block
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Junior Member
Joined: Dec 2003
Posts: 46
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Car: 91 z28
Engine: 383
Transmission: t-5
Axle/Gears: 3.73
305 block
hello, new to the board, just pulled out a 305 tbi from a 91 z28 and found out the block was cracked, just wondering if anyone has a 305 block for a roller motor, or know anyone that has one, please e-mail me and let me know, thanks.
Shaunz28@comcast.net
Shaunz28@comcast.net
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Joined: Sep 2001
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From: Montreal\Quebec|Canada
Car: Camaro Z281991 Engine: 5.7L/350 TPI Transmission: TH700R4 ··································· Car: Acura CL 1998
Engine: 3.0L/183
Transmission: 4 spd auto/OD
or a 383 ? ... or a ...
Thread Starter
Junior Member
Joined: Dec 2003
Posts: 46
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Car: 91 z28
Engine: 383
Transmission: t-5
Axle/Gears: 3.73
i got plans for this 305, it will be nice, everyone builds 350's and 383's, but im taking a different road and build up the 305, i'l get pics and specs up here when im done
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Joined: Sep 2003
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From: Hurlburt Field
Car: 84 Z28, '15 Colorado
Engine: L69
Transmission: A4
Axle/Gears: 3.73
If you really want to build up a 305, by all means do. You can pump in some pretty decent horsepower, just not as much as a 350 or a 383 or a...
But i would have to agree with what ede said, your just buying the bullets. Just my 02
But i would have to agree with what ede said, your just buying the bullets. Just my 02
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From: HAUNTING THE CHAPEL
Car: '87 Mustang LX
Engine: 5.0
Transmission: T-5
If you want to build something different, seeing as 350s and 383s are common why not build a 400? Theres all kinds of combos you can throw together (strokers, destrokers if you want to get really different) the cheapest of wich would be a 406. If your planing on building a power house with a 305 your only going to be disapointed in the end.
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Joined: Dec 2003
Posts: 2,391
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From: Newark, DE
Car: '86 Camaro, '02 WRX, '87 K5, '67
Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder
Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed
Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00
305s have a couple of strikes against them as a performance motor.
1.) small bore-shrouds the valves and doesn't give a big surface area to push down on, limiting power potential.
2.) lightweight parts - most 305s have lightweight blocks and cranks compared to a 350, even though they share a stroke.
3.) heads - mainly due to the small bore, most 2.02/1.60 heads won't work on a 305.
All that being said there are plenty of people that build them and run decent times with them. If your goals are to run low 13s or faster then you are probably wasting your time, and money on a 305. If all you want is decent street performance then there's no reason not to build a 305.
If you're shopping for a block already you will be bucks ahead to just pick up a 350 though...
1.) small bore-shrouds the valves and doesn't give a big surface area to push down on, limiting power potential.
2.) lightweight parts - most 305s have lightweight blocks and cranks compared to a 350, even though they share a stroke.
3.) heads - mainly due to the small bore, most 2.02/1.60 heads won't work on a 305.
All that being said there are plenty of people that build them and run decent times with them. If your goals are to run low 13s or faster then you are probably wasting your time, and money on a 305. If all you want is decent street performance then there's no reason not to build a 305.
If you're shopping for a block already you will be bucks ahead to just pick up a 350 though...
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