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1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.

 
DGN
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01/07/2020 10:54 PM
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1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.

Anonymous Coward
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01/07/2020 10:59 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
375HP my ass! Exact same engine installed in the Impala was rated 425.... think GM was fudging somewhere? lmao
DGN  (OP)

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01/07/2020 11:03 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
375HP my ass! Exact same engine installed in the Impala was rated 425.... think GM was fudging somewhere? lmao
 Quoting: Anonymous Coward 78173726


rolleyes
... same with the Corvette....

Last Edited by DGN on 01/08/2020 12:11 AM
Anonymous Coward
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01/07/2020 11:05 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
lol..... what! GM NEVER understated horsepower ratings... !!
Icey

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01/07/2020 11:07 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.

 Quoting: DGN


[link to www.youtube.com (secure)]
I am SNOWIE. WELCOME TO THE NEW ICE AGE. TRY NOT TO STARVE.
Anonymous Coward
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01/07/2020 11:08 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
Anonymous Coward
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01/07/2020 11:11 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Torque is what moves the freight, 415 VS 490 and a negligible weight difference (as stockers go) makes for a starting line advantage that some might call unfair don'cha think?
DGN  (OP)

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01/07/2020 11:15 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Torque is what moves the freight, 415 VS 490 and a negligible weight difference (as stockers go) makes for a starting line advantage that some might call unfair don'cha think?
 Quoting: Anonymous Coward 78173726


Not really because in drag racing torque peak only hits in first gear around 3500 rpm, after that all shifts are 4500 and above.
Anonymous Coward
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01/07/2020 11:21 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Torque is what moves the freight, 415 VS 490 and a negligible weight difference (as stockers go) makes for a starting line advantage that some might call unfair don'cha think?
 Quoting: Anonymous Coward 78173726


Not really because in drag racing torque peak only hits in first gear around 3500 rpm, after that all shifts are 4500 and above.
 Quoting: DGN


At loose ends sometime, find the torque curve charts on the two of 'em and overlap them. peace
_Blackbird_

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01/07/2020 11:39 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Doesn't matter how much HP you're pushing if your diff isn't going to let it get to the wheels. The most important factor in drag racing is arguably rear-end gearing.

Source: I had a '68 Buick GS400 that ran in the mid 10's
_Blackbird_

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01/07/2020 11:43 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
DGN  (OP)

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01/07/2020 11:47 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Doesn't matter how much HP you're pushing if your diff isn't going to let it get to the wheels. The most important factor in drag racing is arguably rear-end gearing.

Source: I had a '68 Buick GS400 that ran in the mid 10's
 Quoting: _Blackbird_


No you didn't.
DGN  (OP)

User ID: 76673672
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01/07/2020 11:49 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
 Quoting: _Blackbird_


Behind the axle in a Porsche...... how you gonna steer?
_Blackbird_

User ID: 78311399
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01/07/2020 11:50 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Doesn't matter how much HP you're pushing if your diff isn't going to let it get to the wheels. The most important factor in drag racing is arguably rear-end gearing.

Source: I had a '68 Buick GS400 that ran in the mid 10's
 Quoting: _Blackbird_


No you didn't.
 Quoting: DGN


I can list every spec and every modification made to it in it's time with me, if you want.
_Blackbird_

User ID: 78311399
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01/07/2020 11:51 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
 Quoting: _Blackbird_


Behind the axle in a Porsche...... how you gonna steer?
 Quoting: DGN


944's are front engine, numbnuts.
DGN  (OP)

User ID: 76673672
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01/08/2020 12:10 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Doesn't matter how much HP you're pushing if your diff isn't going to let it get to the wheels. The most important factor in drag racing is arguably rear-end gearing.

Source: I had a '68 Buick GS400 that ran in the mid 10's
 Quoting: _Blackbird_


No you didn't.
 Quoting: DGN


I can list every spec and every modification made to it in it's time with me, if you want.
 Quoting: _Blackbird_


I give ya 13.20 108 , but yes the Buick motor had free breathing heads.
Icey

User ID: 77119763
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01/08/2020 12:11 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
 Quoting: _Blackbird_


Behind the axle in a Porsche...... how you gonna steer?
 Quoting: DGN


944's are front engine, numbnuts.
 Quoting: _Blackbird_


bigcruise
I am SNOWIE. WELCOME TO THE NEW ICE AGE. TRY NOT TO STARVE.
_Blackbird_

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01/08/2020 01:12 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
Doesn't matter how much HP you're pushing if your diff isn't going to let it get to the wheels. The most important factor in drag racing is arguably rear-end gearing.

Source: I had a '68 Buick GS400 that ran in the mid 10's
 Quoting: _Blackbird_


No you didn't.
 Quoting: DGN


I can list every spec and every modification made to it in it's time with me, if you want.
 Quoting: _Blackbird_


I give ya 13.20 108 , but yes the Buick motor had free breathing heads.
 Quoting: DGN


Mine was a little different, i'll just list specs.

Base car: 1968 Buick Skylark GS400

Factory/dealer options: staple ratchet shifter (modified, i'll get to that), A/C (removed by me), Stage 1 Special Package (the Stage 1 package was actually available in 1968 but wasn't a badged option until 1969, it was a dealer option)

Specs:

Buick 400 big block, 11:01 compression (stock), 390ish base HP (because of the Stage 1 Special package)

Camshaft, rods, lifters and springs: Comp Cams solid lifter setup based on the dimensions of a 1970 Stage 2

Aspiration: modified Holley Double Pumper, Edelbroch Performer two plane intake, custom made Ram Air system that ran from the inner headlights to the intake, Thunderbolt style

Pistons: Custom forged and notched pistons based on the stock ones (you'll know why I had to do this in a second)

Ignition: Pertronix electronic points and Flamethrower ignition coil

Heads: 1970 GSX 455 heads to drop the compression ratio slightly because;

NOS Sneeky Pete Nitrous kit fed by a ZEX Powershot setup 100HP wet shot.

Transmission: TH400 3 speed automatic with Shiftworks shift kit, don't remember the ratios off hand

Rear axle: posi (obviously) with custom machined 3:08 gearing.

Wheels:
front: stock Ralleye 1968 Buick GS rims
Rear: 11 inch wide replica Buick Ralleye
front tires Dunlop GT Qualifiers
rear tires:M&H Drag radials

Misc:

Weight reduction: removed A/C, removed hood braces, removed rear seat when racing

Interior: Steettach Tachometer, oil pressure, voltage and water temperature gauges, harness bar, 4 point Takata harness on driver's seat, Takata quick release steering wheel,

Chassis and suspension: rear K-sport coil-overs for a Chevelle, custom welded ladder bars, front Calvert 90/10 drag shocks

Final dyno reading before I sold it: 714HP at rear wheels
0-60: 2.5 seconds
0-100: 4 seconds flat
quickest quarter mile: 10.0071 @ 136.2 MPH
Anonymous Coward
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01/08/2020 02:41 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
That Challenger smoked that Chevy.
DeplorableOldMan

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01/08/2020 02:55 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
 Quoting: _Blackbird_


Behind the axle in a Porsche...... how you gonna steer?
 Quoting: DGN


Wrong!

A 944 is front engine rear wheel drive with a transaxle in the rear.

It would probably be almost impossible, nightmare minimum, to mate up an LT1 with the transaxle by using the factory torque tube set up.
DeplorableOldMan
_Blackbird_

User ID: 78311399
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01/08/2020 05:18 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I can confirm this.

I have an LT1 stroked to 383 on a stand waiting to go into something. Just haven't decided on whether or not to drop it in the '95 Camaro rolling shell I have, or do something off the wall and find something like a Porsche 944 to drop it in and really screw with people.
 Quoting: _Blackbird_


Behind the axle in a Porsche...... how you gonna steer?
 Quoting: DGN


Wrong!

A 944 is front engine rear wheel drive with a transaxle in the rear.

It would probably be almost impossible, nightmare minimum, to mate up an LT1 with the transaxle by using the factory torque tube set up.
 Quoting: DeplorableOldMan


What are you talking about, the SBC swap kits for 924's and 944's have existed since the car was new, because the stock engine was a nightmare (unless you had the final year 944 S).

The only issue is most people just go LS over LT/SBC now, so I would need to do some fabrication....which luckily I happen to work in a shop that does just that.

Also, you can V8 swap a 911, Rauh-Welt Begriff did three that I know of.
Anonymous Coward
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01/08/2020 05:51 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
My 3400lb 455hp lt1 camaro will embarrass those death traps.
 Quoting: Anonymous Coward 49235022


I had a 98 SS ls1 with a few mods...
Never lost in that car..
Anonymous Coward
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01/08/2020 05:54 AM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
That Challenger smoked that Chevy.
 Quoting: Anonymous Coward 78320594


I think the 427 rat would be a better match for a 440 six-pack.
DGN  (OP)

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01/08/2020 12:48 PM
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Re: 1970 440 Six pack Challenger vs 69 396/ 375 L89 aluminum head Camero.
...


No you didn't.
 Quoting: DGN


I can list every spec and every modification made to it in it's time with me, if you want.
 Quoting: _Blackbird_


I give ya 13.20 108 , but yes the Buick motor had free breathing heads.
 Quoting: DGN


Mine was a little different, i'll just list specs.

Base car: 1968 Buick Skylark GS400

Factory/dealer options: staple ratchet shifter (modified, i'll get to that), A/C (removed by me), Stage 1 Special Package (the Stage 1 package was actually available in 1968 but wasn't a badged option until 1969, it was a dealer option)

Specs:

Buick 400 big block, 11:01 compression (stock), 390ish base HP (because of the Stage 1 Special package)

Camshaft, rods, lifters and springs: Comp Cams solid lifter setup based on the dimensions of a 1970 Stage 2

Aspiration: modified Holley Double Pumper, Edelbroch Performer two plane intake, custom made Ram Air system that ran from the inner headlights to the intake, Thunderbolt style

Pistons: Custom forged and notched pistons based on the stock ones (you'll know why I had to do this in a second)

Ignition: Pertronix electronic points and Flamethrower ignition coil

Heads: 1970 GSX 455 heads to drop the compression ratio slightly because;

NOS Sneeky Pete Nitrous kit fed by a ZEX Powershot setup 100HP wet shot.

Transmission: TH400 3 speed automatic with Shiftworks shift kit, don't remember the ratios off hand

Rear axle: posi (obviously) with custom machined 3:08 gearing.

Wheels:
front: stock Ralleye 1968 Buick GS rims
Rear: 11 inch wide replica Buick Ralleye
front tires Dunlop GT Qualifiers
rear tires:M&H Drag radials

Misc:

Weight reduction: removed A/C, removed hood braces, removed rear seat when racing

Interior: Steettach Tachometer, oil pressure, voltage and water temperature gauges, harness bar, 4 point Takata harness on driver's seat, Takata quick release steering wheel,

Chassis and suspension: rear K-sport coil-overs for a Chevelle, custom welded ladder bars, front Calvert 90/10 drag shocks

Final dyno reading before I sold it: 714HP at rear wheels
0-60: 2.5 seconds
0-100: 4 seconds flat
quickest quarter mile: 10.0071 @ 136.2 MPH
 Quoting: _Blackbird_


Rather incredible performance for 3.08 gears, sure you didn't have 500 shot?
chuckle





GLP