[Formulajones]

Originally Posted by slowbird

Totally wrong we've had a 500+hp 400 on the street for many many years and it's very streetable. Would be even more street friendly with a good set or aluminum heads vs our crappy iron heads.
But this thread is not about 400s making 500hp

Agree, very doable with a 400 and still very streetable. Plenty of engines smaller than that making over 500hp that make fine street engines.

[Stan Weiss]

Originally Posted by TCSGTO

Most info is in the signiture.
4.35x4.350 bore & stroke.
Potential for much more power with carb, cam, compression changes but fits the definition of a street car that can be driven across the country on pump gas.
Starts at the touch of the key, idles at 800 in gear and drives smooth at low speeds. At this time I’m not willing to give up any of that drive ability for more power, it has enough.
Biggest drawback is it’s a death trap with normal street radials, stick DOT tires required.

What did you car weight with you in it when you ran those nymbers.

Note this list is Pump Gas.
http://www.magneticlynx.com/carfor/pont_gas.htm

Stan

[TCSGTO]

Originally Posted by Stan Weiss

What did you car weight with you in it when you ran those nymbers.

Note this list is Pump Gas.
http://www.magneticlynx.com/carfor/pont_gas.htm

Stan

4035#

[steve25]

Your idea of a neck snapping 500 hp 400 and mine concidering the OPs 3,36 rear gears are 2 different things!

[AG]

Combo is:

IAII A with a 4.320" bore x 4.21" stroke (Ohio crank 4340), 494 ci
Crower forged rods/Ross pistons
SD CNC heart chamber Eddy RP heads that flow 335 cfm
246/252 at 0.050", 0.400" lobe CC HR on a 112 LSA
Northwind with an 850 cfm carb

Have all the parts, just need to balance the rotating assembly and put together. Will run with a TH400, 3500 stall converter and a 3.07 rear gear in a '72 LeMans convertible.

[Stan Weiss]

Originally Posted by TCSGTO

4035#

Thank you.

Stan

[HWYSTR455]

4.350 bore x 4.50 stroke = 535
Solid roller
296/304 @.020
260/267 @.050
4.210 lobe lift
112 LSA
10.42 SCR (would have to double check)
4L80e
3.73
No dyno time

Thanks to Steve C on cam, spring, retainer selection. I think I would have gone 114 LSA and liked it a little more. Idles at 850 RPM, 11" vacuum, PB & A/C works as desired, drives easy, and becomes a monster with throttle.

Pics attached, but most have seen already....


.

[sjdiesel]

Originally Posted by HWYSTR455

4.350 bore x 4.50 stroke = 535
Solid roller
296/304 @.020
260/267 @.050
4.210 lobe lift
112 LSA
10.42 SCR (would have to double check)
4L80e
3.73
No dyno time

Thanks to Steve C on cam, spring, retainer selection. I think I would have gone 114 LSA and liked it a little more. Idles at 850 RPM, 11" vacuum, PB & A/C works as desired, drives easy, and becomes a monster with throttle.

Pics attached, but most have seen already....


.

Sweet setup! What heads?

[Steve C.]

535 cubic inches
4.5 stroke
4.350 bore
6.7 rods
Edelbrock heads / 345 cfm at 0.600" lift
11:1 compression
Torker II intake / 850 cfm carb
Comp hydraulic roller cam
P8 3318S/3319S HR112
248 / 254 at .050"
0.619" / 0.639" w/ 1.65 rockers
112 LSA

652 hp at 5400 rpm / 690 tq at 4400 rpm

https://www.hotrod.com/articles/ccrp...-alloy-indian/


.

[Steve C.]

IA2 block
505 cubic inches
4.375 bore
4.210 Pontiac crank cut down to 3" main journals
6.625 BME alum rods
Edelbrock heads- 315/240 cfm at 0.700" lift
10.5 :1 compression
Victor intake / 1-inch cloverleaf spacer / 1195 cfm King Demon RS carb
2-inch headers
Comp solid roller cam
Lobes 4253 / 4214
276 / 284 at .050"
.4400 / .4400 lobe lift / with 1.65 rockers
110 LSA / 107 ICL

742 HP at 6200-6400 rpm
670 TQ at 4900/5000 rpm

Information from the "Road Warrior Build"
Dec 2005 Hot Rod magazine



.

[3fastgtos]

500”
IA2
4.350 bore
Crower billet 4.210
12.5:1
Highports 405cfm@.800 58cc
Comp cams solid roller 50mm roller bearings
In. .477 lobe lift 288@.050
Ex. .462 lobe lift 290@.050
110 lobe center
T&D 1.8 ratio rockers
Wenzler 2 tunnel ram with 2 850s

Mcload dual 10” clutch
Liberty 5100 5 speed

Going in my ‘62 Cat Safari wagon
Not sure on hp but I’m betting 800+ at around 7500

[HWYSTR455]

Originally Posted by sjdiesel

Sweet setup! What heads?

No dyno time, I kind of didn't care what the dyno numbers are.

E-heads, round port, Butler @320cfm type.

The head flow is what probably holds it back some, 330s or 345s would have been better, but kind of didn't want to wait longer for them.



.

[autobahn]

78TA 400 stock bore and stroke #64 heads milled down .00045k= 9.3 cr Comp cam Thrumper, Tremec TKO5 ,stock 3.42 rear gears . dyno'd 360.1 hp probably a little more cam than needed but it sounds good

[nmoreilly]

66 GTO hardtop.

AGE M23 4 Speed
3.73 12 Bolt Rear / Eaton Posi, Moser 31 spline axles

IAII - 535 Block
KRE hi port heads / intake flow 360 CFM
Scat Light Weight forged 4.5” crank Crower I-Beam Sportsman rods. Diamond forged aluminum pistons
Approx 10.5:1 CR / 94 Pump
Howards HR - 305/309 adv, 251/255 @0.50, 114/112 LSA/ICL,4/7 swap
Johnson short travel HR lifters
Holley EFI / FAST 4500 TB / Victor Intake
MSD 6AL-2 programmable / MSD crank trigger

705 TQ @4500 / 699 HP @5600, 32 degrees total advance. We had to use a quick fuel 750 for the dyno (don’t ask) so probably left some on the table. Car is predominantly street driven.

Vid/pic attached

https://youtu.be/vz-l29omL70

[HWYSTR455]

Originally Posted by nmoreilly

66 GTO hardtop.

AGE M23 4 Speed
3.73 12 Bolt Rear / Eaton Posi, Moser 31 spline axles

IAII - 535 Block
KRE hi port heads / 260CFM
Scat Light Weight forged 4.5” crank Crower I-Beam Sportsman rods. Diamond forged aluminum pistons
Approx 10.5:1 CR / 94 Pump
Howards HR - 305/309 adv, 251/255 @0.50, 114/112 LSA/ICL,4/7 swap
Johnson short travel HR lifters
Holley EFI / FAST 4500 TB / Victor Intake
MSD 6AL-2 programmable / MSD crank trigger

705 TQ @4500 / 699 HP @5600, 32 degrees total advance. We had to use a quick fuel 750 for the dyno (don’t ask) so probably left some on the table. Car is predominantly street driven.

Vid/pic attached

https://youtu.be/vz-l29omL70

Very nice, close to my combo, gives me an idea.

What do your heads flow?

.

[i82much]

Originally Posted by nmoreilly

66 GTO hardtop.

AGE M23 4 Speed
3.73 12 Bolt Rear / Eaton Posi, Moser 31 spline axles

IAII - 535 Block
KRE hi port heads / 260CFM
Scat Light Weight forged 4.5” crank Crower I-Beam Sportsman rods. Diamond forged aluminum pistons
Approx 10.5:1 CR / 94 Pump
Howards HR - 305/309 adv, 251/255 @0.50, 114/112 LSA/ICL,4/7 swap
Johnson short travel HR lifters
Holley EFI / FAST 4500 TB / Victor Intake
MSD 6AL-2 programmable / MSD crank trigger

705 TQ @4500 / 699 HP @5600, 32 degrees total advance. We had to use a quick fuel 750 for the dyno (don’t ask) so probably left some on the table. Car is predominantly street driven.

Vid/pic attached

https://youtu.be/vz-l29omL70

sounds perfect. sometimes i contemplate changes to get more out of my pipsqueak 505. then i drive it and realize that’s not a good idea.

be careful!

[nmoreilly]

Originally Posted by HWYSTR455

Very nice, close to my combo, gives me an idea.

What do your heads flow?

.

360 CFM intake

[nmoreilly]

Originally Posted by HWYSTR455

Very nice, close to my combo, gives me an idea.

What do your heads flow?

.

Originally Posted by i82much

sounds perfect. sometimes i contemplate changes to get more out of my pipsqueak 505. then i drive it and realize that’s not a good idea.

be careful!

Thanks !- The car is a RestoMod build so upgraded the suspension with full SC&C AFX, Baer brakes with hydratech boost. Wheels are Circle Racing Billet 18x8 with steelie caps the red stripes are painted on the rim. Tires - Nitto NT 555 245/45 (F), 255/45 (R)

[nmoreilly]

Originally Posted by HWYSTR455

Very nice, close to my combo, gives me an idea.

What do your heads flow?

.

Just finished reading the thread on your 70 GTO - awesome! Open the heads up and the motor will be a monster!

[sjdiesel]

Originally Posted by nmoreilly

66 GTO hardtop.

AGE M23 4 Speed
3.73 12 Bolt Rear / Eaton Posi, Moser 31 spline axles

IAII - 535 Block
KRE hi port heads / intake flow 360 CFM
Scat Light Weight forged 4.5” crank Crower I-Beam Sportsman rods. Diamond forged aluminum pistons
Approx 10.5:1 CR / 94 Pump
Howards HR - 305/309 adv, 251/255 @0.50, 114/112 LSA/ICL,4/7 swap
Johnson short travel HR lifters
Holley EFI / FAST 4500 TB / Victor Intake
MSD 6AL-2 programmable / MSD crank trigger

705 TQ @4500 / 699 HP @5600, 32 degrees total advance. We had to use a quick fuel 750 for the dyno (don’t ask) so probably left some on the table. Car is predominantly street driven.

Vid/pic attached

https://youtu.be/vz-l29omL70

Awesome setup! Need more pics/videos of this!