Bryant

I want to put an injected 400 in my car and I'm looking for good combo's. My car is a '40 Ford coupe and I want a good looking, street driveable, 13-sec setup. I have several 400's laying around and one vortec truck engine. I think it would be great to put the vortec heads on the 400, but I'm not sure how long it's gonna be 'til they release the TPI intake for them. Suggestions?

RB83L69

My engine is a 400 with 186 heads and a Comp HR282HR cam; I used 12cc dish pistons, for a CR of about 10.4:1. My estimate is about 425 HP and 450 ft-lbs of torque at the crank, for what any of that is worth. I certainly have no trouble whatsoever nuking the Mustangs on the street, usually hilariously. With those numbers it's obviously not TPI.

A friend of mine and I recently built a 433 for his Blazer with 6085 heads and the same XR282HR cam, and put a Haltech, the Accel DFI intake, somebody's billet 4-barrel throttle body, and 30 lb/hr injectors on it. Someday we'll get some numbers on that one and post them.

How much does your car weigh? That will determine how much motor you need to make it run 13s.

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

Ward

iTrader: (1)

I dont have many mods done to my car yet, but I know what i am going to do (once i get my damned $632 court fine paid off). My 400 is carbureted right now, and im gonna keep it that way since I know how to work on carbed stuff, but I dunno crap about working on fuel injection. I have decided that I want to remove my ECM this summer, too so i can go with a little bigger cam without having to worry about the computer throwing a code. Im gonna get a Summit cam kit which is .46/.48 for $80 with lifters. Then I plan to get a good set of factory or mild ported 350 heads with the steam holes drilled in them, but definitely not the 76cc heads. Alot of internal stuff is the same, though, like weak connecting rods. I would get a good set of conecting rod bolts like ARP. From what I have heard, also, I wouldnt get really high gears, since the 400 is not a high-revving engine. I wouldnt take it past about 5200 RPM, but you really dont need to, since most of its power is beneath that. I have 3.23 gears, and they are great for off the line, but with the TH700R4s overdirve, it doesnt tach too high on the freeway. I cant give you much advice about FI, but you want the heads, intake, and runners ported and polished, as opposed to carbed, where polishing is bad since it helps atomize the fuel more. I would also go with 2.02/1.6 valves to help the engine breathe better.

------------------
1983 Pontiac Firebird SE
LG4-Based Chevy 400
700R4 Tansmission
Modified 4 Barrel Q-Jet Carb
Accel Super Stock 8mm Wires
Edelbrock Pro-Flo Air Cleaner
3.23 Posi Rear
14X7" Cragar SS/T Wheels
35X4 CD/AM/FM Head Unit
100WX2 Amp
2 Pioneer 12" Subs in Custom Box
http://fbody.cjb.net/

jcb999

Track1 heads, Custom comp hydroller with .603 intake and .555 exhaust (magnum intake lobe and extreme exhaust lobe) on a 109LSA with 1.6 rockers. 10.8 to 1 comp
Close to 500 hp.

You could build almost a stock 400 and in a 3rd gen it would run 13s with about a 3.42 gear. A hp to weight ratio of about 1 to 12 is good for a low to mid 13 at about 100 mph

I will add that much more than 300 hp using a tpi is not that easy. The main reason for this is the rate that the torque falls off because of the long tpi runners. You will need 360 ft/lbs of torque at 4500 to get 308 hp

[This message has been edited by jcb999 (edited November 30, 2000).]

Black Beauty

hey bryant...wanna get rid of one of those 400s?? ill take it off your hands

------------------
Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 3/4 super comp long tubes, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit
MacEwen Motorsports White Gauge Overlays
K&N Filter Charger (wooohooo)
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window
www.geocities.com/esvalenz

Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!

Tom 400 CFI

See my sig. Long block is a worn late 70's smogger w/lots of carbon build up on the valves. Intake is Crossfire injection.

This winter it is getting rebuilt with 6" rods. 10.5:1 comp pistons, and AFR 195 heads.

------------------
'83 Trans Am. 400 CID, 224/234 crane cam, Summit aluminum roller rockers, hand ported intake, home bored 2.09" (53mm) throttle bodies, MSD 454 injectors(75 lb/hr), Holley 255LPH fuel pump, custum modded FPR w/Vacuum port added, Edelbrock TES headers, empty cat, SLP 3" stainless steel cat back, stock ECM & chip. Borg/Warner T-5 World Class, 12" Corvette rotors and clipers, GTA 16" wheels, South Side Machine subframe connectors, 1LE sway bars, 3.45 ring and pinion, Alpine sound.
Best E.T. 13.532
Best MPH 102.24

Bryant

Thanks for the info. My car weighs about 3100 lbs and currently has a 3.50 geared 9 inch Ford rear. It has tall tires, so it's probably equivalent to 3.23's. It sounds like the 400 would work fine with the stock heads and a mild cam if I want to use the TPI.
Are 400's that hard to come by? I find them all the time around San Antonio and the short blocks usually cost about $75 in the junk yard. I've got one in my '34 Chevy, my dad's '40 Ford truck, and a 377 (destroked 400) I've ran for years. I've always wanted to slap a TPI setup on one of them.

MikeH

iTrader: (10)

Bowl ported Trickflow 23* heads. LPE SuperRam cam.. and plenum 10.8:1 compression.

After Christmas I should have the time to finally install it.

Good luck!



------------------
Black 90 IROC, L98, A4, 323 gear. SuperRamed 406 in the works!

kiztope

Bryant, do you have a 70-72 4 bolt 400 laying around? If you wanna sell it, I could probably come pick it up...
Email me! Im in houston....


Thanks,
Daniel

Kiztope@hotmail.com

------------------
92 Rs 3.1/T-5
KYB Shocks and Struts, Blue Streak cap and rotor, neato new radiator!, RapidFire plugs

An overhead console!! (New thing!)
Clarion Head Unit,
Pioneer 6x9's,Cerwin Vega Plate 4x6's
.....
Its slowly but surely coming along....

AIM : Theonekiztope
ICQ: 8787542
Planetarion: 3GFB kiztope of kiztopia-Camera-92RS-A (17:24:14)

"No one knows until they learn" Leon Calrinsky (99)