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as you can see i have amild 350 in my 89 and i to want to either 406 it or 383 it i'm with you dude

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 heads,350 horse cam,bored.40 over, Edlebrock torker2 intake.

Future mods 400 performer rpm intake (polished) and 600 edlebrock carb, comp roller cam, and way better heads. orpossibly a 383 stroker?

 

I'm getting one installed in my 88 TA right now. Desktop Dyno says 445HP at 5500rpm and 466lb ft of torque at 4000rpm. Matter of fact it doesn't come below 400lb ft until 6000rpm. Of course it cost me $3500 but I think it'll be worth it!

Steve

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Steve's Trans Am Temple

 

I was unwilling to settle for as little of a motor as that. So I put in the whole thing, a 400. So far (130,000 miles or so) I like it, except that I tear up lots of stuff.

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"So many Mustangs, so little time..."

 

I'm building mine right now. Desktop Dyno doesn't have provisions for a Super Ram setup so these numbers are for a stock TPI setup. 488 ft/lbs. torque at 2500 RPM's and 405 hp at 5000 RPM's. I'm guessing with the Super Ram those numbers will each jump atleast by 25 ??

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Riccioli Performance Motorworks

--RPM Racing--

-Currently building first ever engine. 383 with Super Ram plenum and runners, Edelbrock lower intake, Bosch 24# injectors, either AFR or Trick Flow heads, MSD ignition.
-Will be installing Baer Brakes
-Will be installing full Spohn suspension in rear
-Art Carr 700R4 trans??


***** Flyby: (n) When you let off the throttle after beating a ***** Racer by a few car lengths and he then blows by you in an attempt to convince you he really won the race.

 

I've got one until I get around to getting the 400 built.

Just a comment, I find Desktop Dyno to be wildly optimistic at times.

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1984 Camaro Z28 Astral Silver w/ 2 1/2" cowl induction hood
Engine: Decked 383 cid 4 bolt w/ oil cooler, 9.6:1 compression, ARP fasteners, 600 cfm Performer carburetor, Torker II intake, Performer RPM Heads, XE268H cam, Magnum roller tip rockers, MSD6AL ignition, Blaster2 coil, recurved HEI distributor
Exhaust: Terminator headers, Custom 3" TIG welded stainless exhaust, Twister muffler
Transmission: 4L60 w/ Corvette servo, .500 boost valve, TransGo 7-CS clutch springs, 700 PKH pump rings, 700-2 reprogramming kit, Borg-Warner High-Energy frictions & bands, 2400 RPM lockup torque converter
Drivetrain: 2.73:1 limited-slip Dana 44 w/ disc brakes
Tires: Front P225/50VR15 Rear P265/50VR15 Eagles

 

I have a 383 in mine. I've been driving it for a year now and it still makes me smile and say "this car is going to get me in trouble"!
I can't wait to go to work tomm. just so I can drive it.
Check it out at my site.

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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

I'll ditto that. Especially on the low end,,, and the smaller the cam the more "off" it is. It seemed to be within the ball park JUST on peak HP on the carbed engines I TRIED to "match". Everywhere else it was just plain off. I'd rank using the program as fun, worth the money, less accurate than an experienced guess, and a little more accurate than an unexperienced guess.

[This message has been edited by BadSS (edited January 14, 2001).]

 

don't go by desktop dyno, you can draw cards and get a closer number. I love my 383, it pulls like a mother down low but my heads suck so I run out of umph around 3k and it gets worse from there. I run out in front of low 12 cars before I run out of air so it should stand up and go when I get the money for AFR's and get my superram repaired.

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Kyle Osterholt
Okarche, Oklahoma
ASE Master Certified
86 T/A 383 TPI
89 TTA #1002 T-top/Leather
89 TTA #1358 Hardtop/Leather
80 T/A Pace Car
73 Opel GT

 

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a 3838 huh? i wouldnt mind having something that size in my car.. would haul in a major way.. but yes, he was simply saying his heads dont flow an optimum amount of air, or, enough for his engine when its running that fast... yes, 383's make great low end power, and easily supply power up to 5500.. this is a very very general comment, it all depends how you build it. 383's are known for their low end power(bc of increased stroke), but that doesnt mean they crap out on the top side

 

Yep, got one here!

Pulls strong to about 6K rpm according to stock tach(not sure how accurate the stock tach is though).

Gobs of torque (actually to much -did I just say that?!?!?- as I can't launch at full throttle even at the track). Need to get a Spohn adjustable torque arm and some drag radials.

I've ran a best of 13.2 at 105.42 with a fubar'd tranny and a total of 90 knock counts (about 15 deg of timing being pulled out) on the stock MAF chip. I've finally got those 2 bugs ironed out, but haven't been able to go back to the track since (stupid winter weather ).

If you go with a 383 and a good set of heads, use a bigger cam than what I did (ZZ4). More cubes make that cam feel almost like a stocker, I'm ready to change it out and the engine has been in the car since last May.

Car runs away from stock LS1s like they are sitting still. Loads of fun and lots of trouble .

Sparks a flyin'.

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1989 L98 IROCZ, Bored .030 over,400 Crank,Dart PRO 1 Heads 200cc intake,ZZ3/ZZ4 Cam,Crane 1.6 RR,Edelbrock 3860 Hiflo TPI Manifold, AS&M LTRs, Edelbrock 58MM TB, Ported Plenum, TCI Reverse Pat Man Valve Body, SVO 24# injectors,TCI Streetfight Stall Converter, 3.23 Gears on Auburn Pro Posi, Some Suspension Mods