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  #16 (permalink)  
Old 05-06-2004, 08:48 AM
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If you have an m-21 and a 700r4 why would you want to buy a th350? With gears like you have in the back already, this doesn't sound like it is going to be very daily driver friendly car, but if it is... wouldn't you want the overdrive for cruising down the street at any speed above 55mph...
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  #17 (permalink)  
Old 05-06-2004, 02:09 PM
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The M21 was designed for 300hp and I want to put 500 through it and turn big tires.. It's too risky with having a clutch come through the floor. 700R4 is one of the worst trannys GM ever build, pratically every vehical with that tranny has replaced it a time or two. They are also expensive to build for racing.. Hard to find parts for. TH350's are good for heavier cars and they are cheap to build.
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  #18 (permalink)  
Old 05-06-2004, 03:29 PM
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I've always had good times with the 700r4's for street cars. I ran my 55 chevrolet with one coupled to some 4.88's for a while. Had to ditch the automatic though...if you would turn from a stop (like at a stop sign) it would chirp both tires when it shifted. Turning left one night I was easing on the throttle a little bit and it shifted...put me sideways in a hurry. The four speed swap began the next weekend. Cool cars deserve clutches (grin).

The 700's are not great for drag racing...however if you're serious about racing you'd want a powerglide anyway.
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  #19 (permalink)  
Old 05-06-2004, 05:46 PM
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It's not a searious race car and it will not be raced that much at all it will mainly be a weekend summer only car. I think a 4sp would be pretty cool as long as I didn't take it to the track it would probably hold up.
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  #20 (permalink)  
Old 05-06-2004, 05:53 PM
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Engines don't win races...drivers win races. Concentrate on learning how to launch and "light" consistently, repeatability and consistency is what will get you the win.

Doesn't hurt to have a well seasoned impartial tuner in the background teaching either.
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  #21 (permalink)  
Old 05-06-2004, 08:02 PM
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Yes driving does win the races.. I saw a Plymouth Neon beat a GT mustang because the Mustang driver didn't know how to shift gears. My dads buddy has a '67 Chevelle drag car with a 434 Dart SBC with 14:1 compression and huge everything, he took me for a ride on some country roads and it scared the hell out of me then we switched drivers and I took it very slow untill he told me "get both hands on the wheel and keep it as straight as possible" I floored it and as soon as my foot hit the floor the shift light came on and I thought about backing off but I hit second gear and the car started getting really squirrly and the tires were fighting for traction still at 100mph. That car is dangrously fast, it runs 6.62 in the 1/8th on M/T ET street tires in a full bodied 67 Chevelle pratically spins the tires down the whole track.
Racing is not really my thing, I like to cruise and just enjoy my car.
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  #22 (permalink)  
Old 05-06-2004, 08:28 PM
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Quote:
Originally posted by GearHead69
It's not a searious race car and it will not be raced that much at all it will mainly be a weekend summer only car. I think a 4sp would be pretty cool as long as I didn't take it to the track it would probably hold up.
I don't know what clutch and flywheel that you'd be running but what the 4 speed will need right away to hold up is a steel flywheel rather than the stock cast iron flywheel. You'll also need a B&B or B&B/ long clutch all SFI rated. At the RPM that you'll need to turn with that cam I'd be more worried about the fly wheel coming apart than than anything.
A stock diaphragm clutch will overcenter if you try to shift at much more than 6500. The later model bent diaphragm won't over center or so I'm told.
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  #23 (permalink)  
Old 05-06-2004, 09:07 PM
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If you are not serious about drag racing and you want it to be a summer car why not change your tires up and change your gears out?

-Eric
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  #24 (permalink)  
Old 05-06-2004, 09:50 PM
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It may never see the track but I want it to be a fast street car, the suspension, narrowed rearend, and body are all setup for the huge tires.. There would be no point in running standard sized tires. Come time to put a set of tires on the thing (when these wear out) I will go a couple sizes smaller like 29x18x15 the ones on it now are a little overkill.. but they came with the car and are brand new so I'm runnin em.
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  #25 (permalink)  
Old 05-06-2004, 10:46 PM
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I think that we would like to see some pictures of this "beast"......................
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  #26 (permalink)  
Old 05-07-2004, 08:35 AM
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No problem.. I'll borrow the digital this week and get some pics
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  #27 (permalink)  
Old 05-08-2004, 12:04 PM
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Back of the car:
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  #28 (permalink)  
Old 05-08-2004, 12:05 PM
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Engine
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  #29 (permalink)  
Old 05-08-2004, 12:09 PM
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Smooth firewall, I did all the welding and bondo work myself. Don't need a heater
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  #30 (permalink)  
Old 05-08-2004, 12:15 PM
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Here's the narrowed GM 12 bolt, it has Moroso Brute Strength Differential.
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