3300 pound car; want to do 12's in 1/4 mile - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 04-08-2013, 10:40 PM
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You had best weight that car first. With you in it.
It's more than #3300 Ditching the th700r4 for a 3 speed auto is a good step.

Are you looking for a 350 engine build recipe to get 12sec ET performance from that car?

You can supercharge the 305 and easily get 12 second ET performance.
A supercharged motor is really hard to beat on the street.

If the existing 305 short block is in good condition, it is quite usable as a base for a blown 305 engine.
Not very hard to do at all.

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Old 04-08-2013, 11:12 PM
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Title weight says 3309 pounds. 2 hundred pound driver. So l'd say at most 3600 pounds more than likely less weight due to stuff taken off the car, keeps it lighter. Super charging 305 can't be done. The engine needs help losing a main bearing or oil pump low pressure. Rather build a 350; got a friend that does dirt track. Put's 305 HO heads on 350s between 10-10.5 pressure ratio Flat tops. Seeing what l could do with that kind of set up
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Old 04-08-2013, 11:32 PM
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Ya that can be done. The HO heads will need full porting. 1.94x 1.60 valves.

The supercharged 305 (or a blown 350) is a lot more fun.
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Old 04-08-2013, 11:56 PM
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I can not do that. Way too much for cash wise lol
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Old 04-09-2013, 12:55 AM
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Quote:
Originally Posted by fordss View Post
Title weight says 3309 pounds. 2 hundred pound driver. So l'd say at most 3600 pounds more than likely less weight due to stuff taken off the car, keeps it lighter.
Don't trust title weight. Title weight on my '09 Silverado is 5800, true certified CAT scale weight with me in it at 180 pounds is 7140. The only addition from the factory is a 40 gallon aux fuel tank, about 350 pounds full, so my actual weight is almost 1,000 pounds more than stated.
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  #21 (permalink)  
Old 04-09-2013, 06:14 AM
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350 with,cam like this hydraulic roller

110255-10 CL110255-10 284 288 231 235 .510 .530 110 106 Hyd. Hyd. 1,2
2200-5800 Rough idle, Street/Strip performance. Great low to mid-range torque & power.
750 hp Holley,performer air gap, Dart shp or better heads,10:1 cr,1 5/8 long tube headers,MSD 6AL or better ignition,3k-3300 converter,50/50 rear shocks,maybe 90/10 front shocks???loosen sway bar on front when racing,improved fuel delivery system,28x9 slicks or maybe shorter?lose 100 pounds off front of car,more total if possible.

If you buy bargain parts,think about a little more cam&CR&rear gear.
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Old 04-09-2013, 06:36 AM
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Originally Posted by spinn View Post
750+ carb

hi ignition

good single plane for 6500 rpm+

mechanical cam like 284/284 .530+" compression to match

deep pan increase capacity

manual body

4000 stall

4.30+ gearing 9+ x 28" slick

Go all out.

I never made it past 13.0 flat. If I wanted to crack into the 12's with a sbc , I d try that.
my 1982 f body at 3400 lbs

355 10.5 to 1
292 flat tap hyd
dual plane intake
q jet
th400 3200-3500 stall , no manual v/b
4:11 gears and 28" slicks.. ran 12.78 on motor
and almost 10 flat on gas
cars set up. is worth more that hp.. 9 times out of 10
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Old 04-09-2013, 07:47 AM
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"Gearheadslife' I think your right in many cases about the cost of suspension set up being worth more than horsepower. I've had some real torque monsters of motors that ran high ET's, put the proper suspension underneath that engine and cut a lot of that quarter mile time...it's all about how to get the most use out of that strong engine. Loosing weight, the right tires, gearing, suspension, they all play rolls every bit as important as Horse Power. One question I've never hear'd an OP ask is, how can I improve my driving skills to get a better ET. The difference between me driving my 70 AMX in quarter mile and my wife driving the car is about 10 seconds, why, same car, same Horse Power and in this game 1/100 of a second can be the difference between winning and loosing.

Ray.
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