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Topic Review (Newest First)
04-09-2013 07:47 AM
69 widetrack "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.
04-09-2013 06:36 AM
gearheadslife
Quote:
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
04-09-2013 06:14 AM
vinniekq2 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.
04-09-2013 12:55 AM
68NovaSS
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.
04-08-2013 11:56 PM
fordss I can not do that. Way too much for cash wise lol
04-08-2013 11:32 PM
F-BIRD'88 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.
04-08-2013 11:12 PM
fordss 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
04-08-2013 10:40 PM
F-BIRD'88 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.
04-08-2013 10:38 PM
vinniekq2 weigh your car tomorrow and come back to verify? I will see what ideas i can come up with,g2g4 now
04-08-2013 10:30 PM
fordss It's a 1985 pontiac grand prix; chevy stuffed. Planning to put 373s in the rear end; with either a th400 or th350. Most likely a 350 or bigger small block. Right now its a 305 with a cam 600 carb, headers, dual glass packs with a 700r trans. That's the vehicle it needs to run on pump gas.
04-08-2013 10:19 PM
vinniekq2 whats the dip in the torque curve? the lower hp usually means under cammed or not breathing enough on top.That car should be way into the 12s unless you are towing trailer
04-08-2013 10:09 PM
spinn Okay with my current engine dyno sheet . What would my current 440 , all rollered out , do in the quarter.

71 cuda convert 4 speed. Its a 3.23 in it now, but there is a 4.10 pumpkin somewhere. 26" tire. 4000lb? No idea.



The hp tq do match at 5250 or whatever, the graduation is weird.
04-08-2013 10:04 PM
vinniekq2 spinn,Im saying your mopar should go low 12s,except if it has the dodge direct connection,purple camshaft.

WDCs example is a well set up car could sneak into the 12s with 350 hp. so many variables,I would rather tell someone their car will go 12.9s with a 12.20s engine,,,just in case there are other problems
04-08-2013 09:58 PM
spinn The performer 350?

low 12's.. How about 15.0 flat.

The 440 is sacred to me. That is one impressive tank of a bastard. It was a little soft on compression back then, I couldn't afford heads. It was still dynamite. 13 seconds and I thought it was the fastest thing. The number does not sound so fast nowadays.
04-08-2013 09:45 PM
vinniekq2
440

Quote:
Originally Posted by spinn View Post
WDC I cannot see a 350 performer hauling the quarter at 12.98 in a mid size 3300lbs car.

If it can , I am doing something really wrong.

13 seconds for me , is like a big block with large hydraulic cam, single plane, big gears.
unless y0u are using the mopar purple cam,your car should run low 12s
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