12's in my car listed below? i know it's a long way off right now but is it possible? worth the effort? or should i buy a 350 and put TBI on it?

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1991 RS LO3
mods: 14" chrome air cleaner, straight-piped after cat exhaust with one chrome dual tip on the left side.
future mods: headers, removing smog equipment, and as many cheap mods as i can find
aol s/n: budman8503

RACECAR spelled backwards is RACECAR

 

Sure you can go 12's in that car, but like the old saying goes...Speed takes money, How fast do you want to go.

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92 Camaro RS 5.0 5-Speed
14" Open Air Cleaner
3.08 Posi-trac
Edelbrock TBI Intake
Crane cam
Ported & polished stock heads 3 angle valve job
HyperTech Chip
SLP Headers (Ceramic Coated)
UltraFlo cat-back exhaust

74 Dodge Dart Sport 360 (11.2 1/4 mile)

2000 Dodge 1500 Ram Sport

 

Yes you can run 12s on a 305, however you could do it easier with the 350 simply because the motor is bigger and most importantly, the number of cylinder heads for the larger bore 350 is much greater than those made for the smaller bore 305.

In my opinion, if you have the money, just go ahead and shoot for the 350. In the end, you'll have better cylinder head selection, not to mention 45 extra cubes. The only reason why I would stay with the 305 is so the Mustang guys don't complain that you have a bigger engine when you beat them (yeah 3 cubes bigger, but hey, that's not much). I'm in college right now, so I have to stick with the 305 since I don't have money for anything else.

Regardless of which route you take, you're gonna need some serious bottom end hardware (forged crank, stock rods are supposedly good to 450 hp, and either forged or hypereutectic pistons), a good set of cylinder heads, a cam that will allow the engine to breath good, a full exhaust setup, and possibly a new tranny.

It's also important to be able to put the power to the ground once you've got your engine making it. A new set of LCAs and a good torque arm should help you hook up. Slicks probably wouldn't hurt either.

Hope this helps,

Jason

[This message has been edited by 89BlwnRs (edited May 30, 2001).]

 

12's. not without a supercharger, nos, cam heads, crank, pistons, ignition, well. everything will need changed. and it will cost more to get it to 12's that buying a 350 and getting it to 12's.

i think there was an aussie with a 12 second lo3 tbi car, it had nos, and a supercharger. huge rearend, etc..

 

you can run 12's on a 305 with out all kinds of wild stuff. i don't know why people think that you need to do anything huge to get there. all though nitrous does help a lot, just ask camaroracer1992
it would have to be a total car combo. including a reasonble diet(car would need to be 3200lbs prolly) the right gears( 3.73's or 4.10's prolly) and a suspension that is optimized for drag racing.
the engine would need a big block or holley 670cfm TB and a good performance intake, either one of the bigger dual plains or a smallish single plains shoudl work. good heads with a 60cc or smaller combustion chamber to keep the compression as high as possible. as far as the cam goes, you could stay with the roller, duration is a good way to build power, but try to keep the lift below the .460 total mark, beyond that you are getting into air flow problems.
remember that et's are more about grip and gears than big hp numbers and you will be in good shape. a matched combo will get the job done with out a bunch of power adders.

lata
tim

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91 Camaro RS-LO3,Auto.
14.209@95.46mph
Best 60' 1.917
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