[grandam1979]

Originally Posted by jm455ho

When I was running 11.0X's, my 60ft times were 1.38-1.39. My 1/8 mile was 6.90's @ 95 mph, and 1/4 mile was 118 mph. This is leaving on trans-brake with 4:30 gears and 9x30 radial slicks.
This year with around 45-50HP more, I made a few test hits and best was 1.33 60ft, 6.63 @ 99.65 mph, and 10.59 @ 123 mph. Engine dyno'd around 520HP and race weight is 3350 lbs.

What trans and converter do you run? To me your car is very fast for the mph. Your 60’s are impressive.

[Dragncar]

Originally Posted by jm455ho

When I was running 11.0X's, my 60ft times were 1.38-1.39. My 1/8 mile was 6.90's @ 95 mph, and 1/4 mile was 118 mph. This is leaving on trans-brake with 4:30 gears and 9x30 radial slicks.
This year with around 45-50HP more, I made a few test hits and best was 1.33 60ft, 6.63 @ 99.65 mph, and 10.59 @ 123 mph. Engine dyno'd around 520HP and race weight is 3350 lbs.

Those are some nice numbers. You are getting the power you have to show up. Can you tells us more about your combo ?

[adam woodmancy]

Originally Posted by jm455ho

When I was running 11.0X's, my 60ft times were 1.38-1.39. My 1/8 mile was 6.90's @ 95 mph, and 1/4 mile was 118 mph. This is leaving on trans-brake with 4:30 gears and 9x30 radial slicks.
This year with around 45-50HP more, I made a few test hits and best was 1.33 60ft, 6.63 @ 99.65 mph, and 10.59 @ 123 mph. Engine dyno'd around 520HP and race weight is 3350 lbs.

That’s flat getting after it out of the hole 👍🏼

[jm455ho]

Car specs:

1978 Firebird Trans Am, all metal body, all glass windows
Moser 9 inch rear end, 35 spline axles, spool, 4.29 gears
10 point chromemoly cage
Cal-Tracs split mono leafs with bars
QA1 double adjustable rear shocks
Martz Chassis front subframe with QA1 double adjustable shocks
Weld Aluma-Star 15 x 10 with Hoosier 30 x 9 radial slicks in back
Weld Aluma-Star 15 x 4 with Hoosier front runners
JPT C4 transmission with JW Ultrabell (GM to Ford C4) with Transbrake
JPT 10” converter, 4600 rpm stall
Weight with driver: 3350 lbs

[jm455ho]

Current engine specs
4.150" bore x 4.0" stroke based on 1978 XX400 block (433 CID)
Studded 2 bolt mains with Canton road race oil pan.
250° - 256° (@ 0.050”) solid flat tappet cam, 112° LSA installed at 108
Ported #12 casting iron d-ports with Ferrea valves and beehive springs 166-168 cc intake runners, 70 cc chambers. (11:4 comp ratio)
Cast iron intake plenum ported with Q-jet and 1" spacer
Heddman 2" headers
Intake rockers: Harland Sharp 1.65 (measured 1.72) net lift after lash .570"
Exhaust rockers: Harland Sharp 1.50 (measured 1.58) net lift after lash .520"
Cranking pressure: 190psi
Dyno'd at 520

[prostreet64]

Nice job. Those are some great #s for your combo. I think the steep gears and good traction are getting you out of the hole with an impressive 60' time but probably slowing the mph relative to the e.t. In any event you are doing way better than most other combos I have seen that are similar to yours.

[Stan Weiss]

Originally Posted by jm455ho

Current engine specs
4.150" bore x 4.0" stroke based on 1978 XX400 block (433 CID)
Studded 2 bolt mains with Canton road race oil pan.
250° - 256° (@ 0.050”) solid flat tappet cam, 112° LSA installed at 108
Ported #12 casting iron d-ports with Ferrea valves and beehive springs 166-168 cc intake runners, 70 cc chambers. (11:4 comp ratio)
Cast iron intake plenum ported with Q-jet and 1" spacer
Heddman 2" headers
Intake rockers: Harland Sharp 1.65 (measured 1.72) net lift after lash .570"
Exhaust rockers: Harland Sharp 1.50 (measured 1.58) net lift after lash .520"
Cranking pressure: 190psi
Dyno'd at 520

Can you post up the dyno sheet?

I collect dyno sheets. I have a dyno from you from 2014 which shows 478.7 HP @ 5400 RPM. I also have a dyno which I have labeled as your from 2017 which shows 784.7 HP @ 6800 RPM

Thanks,
Stan

[jm455ho]

Originally Posted by prostreet64

Nice job. Those are some great #s for your combo. I think the steep gears and good traction are getting you out of the hole with an impressive 60' time but probably slowing the mph relative to the e.t. In any event you are doing way better than most other combos I have seen that are similar to yours.

Thank you

[jm455ho]

If anyone wants to have copies of the dyno sheets that are indicated below, send me your email address in PM, and I will forward them. They are too large to attach here, unless someone knows how to do it.

HOB Dyno sheets

Hob24 – RPM - Qjet 800 stock 2 ring version - 32° total timing

Hob25 – RPM – Race Qjet single ring version - 32°

Hob26 – RPM – Race Qjet – 32° - air flow meter

Hob27 - RPM – Race Qjet - 34°

Hob28 - RPM – Race Qjet - 36°

Hob29 - RPM – Race Qjet - 38°

Hob30 - RPM – Race Qjet - 40°

Hob31 – RPM – Holley HP750 – 38°

Hob32 - RPM – Holley HP750 – 38° - air flow meter

Hob33 – Torker 1 – Holley HP750 – 38°

Hob34 - Torker 1 – Holley HP750 – 38°

Hob35 – Warrior – Holley HP750 – 38°

Hob36 - Warrior – Holley HP750 – 38°

Hob37 – Ported Hurricane – Holley HP750 – 38°

Hob38 - Ported Hurricane – Holley HP750 – 38° - Shaker assembly w/Blockers air cleaner

Hob39 – Plenum ported iron intake – Race Qjet – 38°

Hob40 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – paper element

Hob41 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – K&N element

Hob42 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – paper and K&N elements stacked

Hob43 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob44 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob45 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob46 - Plenum ported iron intake – Race Qjet – 38° - air flow meter

Intake configurations

RPM intake
1.25” spacer with opening on secondary side
Plenum depths with spacer – 3.5” / 5.5”

Torker 1 intake
Primary plenum depth – 3.75”
Secondary plenum depth – 3”
Open spacer – 1.5”
Plenum depth with spacer – 4.5” / 5.25”

Warrior intake
Plenum depth – 2.25”
Open spacer – 2.75”
Plenum depth with spacer – 5”

Ported hurricane intake
Rear plenum depth – 3.5”
Front plenum depth – 3.0”
Tapered open spacer – 1.5” / 2.0”
Plenum depth with spacer – 5”

Cast iron intake
Plenum ported by SD Performance
Port matched by me
1’ spacer open on secondary side

[jm455ho]

Originally Posted by Stan Weiss

Can you post up the dyno sheet?

I collect dyno sheets. I have a dyno from you from 2014 which shows 478.7 HP @ 5400 RPM. I also have a dyno which I have labeled as your from 2017 which shows 784.7 HP @ 6800 RPM

Thanks,
Stan

The 2014 results were from the same engine as now, but with stock non-ported heads. The 2017 results were from an aftermarket block with ported high ports that I built, but eventually sold.

[Stan Weiss]

Originally Posted by jm455ho

If anyone wants to have copies of the dyno sheets that are indicated below, send me your email address in PM, and I will forward them. They are too large to attach here, unless someone knows how to do it.

HOB Dyno sheets

Hob24 – RPM - Qjet 800 stock 2 ring version - 32° total timing

Hob25 – RPM – Race Qjet single ring version - 32°

Hob26 – RPM – Race Qjet – 32° - air flow meter

Hob27 - RPM – Race Qjet - 34°

Hob28 - RPM – Race Qjet - 36°

Hob29 - RPM – Race Qjet - 38°

Hob30 - RPM – Race Qjet - 40°

Hob31 – RPM – Holley HP750 – 38°

Hob32 - RPM – Holley HP750 – 38° - air flow meter

Hob33 – Torker 1 – Holley HP750 – 38°

Hob34 - Torker 1 – Holley HP750 – 38°

Hob35 – Warrior – Holley HP750 – 38°

Hob36 - Warrior – Holley HP750 – 38°

Hob37 – Ported Hurricane – Holley HP750 – 38°

Hob38 - Ported Hurricane – Holley HP750 – 38° - Shaker assembly w/Blockers air cleaner

Hob39 – Plenum ported iron intake – Race Qjet – 38°

Hob40 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – paper element

Hob41 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – K&N element

Hob42 - Plenum ported iron intake – Race Qjet – 38° - WFO air cleaner – paper and K&N elements stacked

Hob43 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob44 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob45 - Plenum ported iron intake – Race Qjet – 38° - GM air cleaner – K&N element – ½” spacer under air pan

Hob46 - Plenum ported iron intake – Race Qjet – 38° - air flow meter

Intake configurations

RPM intake
1.25” spacer with opening on secondary side
Plenum depths with spacer – 3.5” / 5.5”

Torker 1 intake
Primary plenum depth – 3.75”
Secondary plenum depth – 3”
Open spacer – 1.5”
Plenum depth with spacer – 4.5” / 5.25”

Warrior intake
Plenum depth – 2.25”
Open spacer – 2.75”
Plenum depth with spacer – 5”

Ported hurricane intake
Rear plenum depth – 3.5”
Front plenum depth – 3.0”
Tapered open spacer – 1.5” / 2.0”
Plenum depth with spacer – 5”

Cast iron intake
Plenum ported by SD Performance
Port matched by me
1’ spacer open on secondary side

Since my email address is posted all over the internet one place will not hurt. lol srweiss1@comcast.net

Thanks,
Stan

[XLR8STEVE]

This is a fun thread...I've run 3 Drag weeks
ran 12.6 ave 1st one 2019
ran 11.8 ave second one 2021
ran 10.7 ave this year and had a pb 10.55 attached

70GTO Stick shift car
535 ci w/ tiger heads
3585 lb raceweight
4.10
29.5 x10.5 tire
5000 launch
I think it needs 4.56 gear but reluctant to change out my trutrac carrier.

[AG]

Originally Posted by XLR8STEVE

This is a fun thread...I've run 3 Drag weeks
ran 12.6 ave 1st one 2019
ran 11.8 ave second one 2021
ran 10.7 ave this year and had a pb 10.55 attached

70GTO Stick shift car
535 ci w/ tiger heads
3585 lb raceweight
4.10
29.5 x10.5 tire
5000 launch
I think it needs 4.56 gear but reluctant to change out my trutrac carrier.

Very impressive with a stick car. What trans do you use?

[adam woodmancy]

Originally Posted by slowbird

That's great thanks for sharing!
Just curious what was your 330ft on the 7.18@94mph pass?

1.560 60 ft
4.584 330 ft
7.189 660 ft

[slowbird]

Originally Posted by adam woodmancy

1.560 60 ft
4.584 330 ft
7.189 660 ft

Awesome thank you so much for looking that up.
The intriguing thing to me is our 69 GP ran same from 330 to 660 (2.60) If we can get the weight moving quicker we should have teens in it. Got something to work towards now.
Ours 1.62 4.696 7.301

[15bhardwick]

Was 1.55 60ft 6.99 1/8 11.12@ 119

Switched from an 850 holley to a 1000cfm APD 4150

Now 1.60 60ft 7.02 1/8 11.05@121

4,000 converter
4:56 gear
3350lb
footbrake

[RBAILEY]

Old 462 w/Iron D combo -

10.60s/10.70s best 60 of 1.48 but usually 1.51 to 1.55

4000 converter
3.73 gear
3295lb
transbrake

But now I have a 60ft problem as I'm running the same 1.51 60ft on a 10.16 @ 135.63 now with new 474 w/high port combo .. should be like 1.37 now...going to swap to a Victor from a Gutsram to see if the 60 improves

[adam woodmancy]

I would really like to change intakes on mine to see how it effects it. When I got my e-heads used, they came with a matching 4150 Victor intake and that’s all I’ve run since I got them. The last time my heads were at the machine shop, I took my old Torker II in and asked the guy to try to do whatever needed done to make it work with the heads. For whatever reason, he said it couldn’t be used with the heads. I don’t know if there’s truth to it or if he just didn’t want to mess with it, but I’m certain that given the small cubic inches of the motor, the weight of the car/lack of gear and very limited rpm’s that it would perform better with an rpm performer or torker II. Not to mention with my flat hood and the victor, I have to run the carb right on the intake. I think an rpm with a spacer would run better. Any thoughts?

[jonmachota78]

Hi Adam. We spoke in the staging lanes at Havana a few weeks ago. Ive never tried a victor but my car picked up from 7.5 to 7.3 going from an extrude honed TII and 1/2" open spacer to an RPM manifold with no spacer. Possibly i didn't have enough spacer on the TII but i don't have the clearance for a bigger one. Jon

[jm455ho]

Originally Posted by adam woodmancy

I would really like to change intakes on mine to see how it effects it. When I got my e-heads used, they came with a matching 4150 Victor intake and that’s all I’ve run since I got them. The last time my heads were at the machine shop, I took my old Torker II in and asked the guy to try to do whatever needed done to make it work with the heads. For whatever reason, he said it couldn’t be used with the heads. I don’t know if there’s truth to it or if he just didn’t want to mess with it, but I’m certain that given the small cubic inches of the motor, the weight of the car/lack of gear and very limited rpm’s that it would perform better with an rpm performer or torker II. Not to mention with my flat hood and the victor, I have to run the carb right on the intake. I think an rpm with a spacer would run better. Any thoughts?

I would almost guarantee you will run quicker with an RPM (and probably a TII). Are your heads wide port version?