402rwhp/359rwtq Stock Short Block 302

5345 Views 119 Replies 28 Participants Last post by 65fasback, 11 h ago

mikeymac

Discussion Starter · 20 d ago (Edited)

I put this combo together based on Rock4451's post here 372rwhp Thread I thought it was super impressive for a bolt on 302. Life gets busy and he unfortunately never got it dialed in at the track. I happen to drag race quite a bit so I decided I would try to put one together and see how quick I can go. My previous combo was ported GT40Y's, F303+ cam = 11.86 at 114 354rwhp STD.

I got it on the dyno yesterday and the results blew me away. The TFS 190 11R's and Ed's cam picked up 60 HP at the wheels!(STD) I'll post the SAE smoothing 5 sheet since that is what Rock had posted in his thread(Uncorrected and STD numbers/sheets are in the video). I did not do any tuning, just a couple pulls and the AFR is pig rich. I'll be able to fine tune that at the track. I had looked at the plugs and put in a fresh O2 sensor before the dyno and pulled some jets and it was still rich at about 11.5 AFR across the board.

I've been to the track a few times this year before the dyno and ran a best of 11.58 at 117mph. PB 60' at 1.58. Now the goal is to get the suspension, clutch program, chassis, and me the driver as efficient as possible and see how quick we can go.

Combo:
1968 Torino GT 3260 pounds with driver
Stock explorer 302 short block - stock lifters
FTI custom hydraulic roller cam
TFS 190 11R’s 56cc
Victor JR intake 1 inch open spacer
Holley 650HP
1 5/8" headers - 3” HARM X-pipe and mufflers
MSD ignition
Electric fan - Small crank pulley
Aluminum flywheel and driveshaft
G-Force street T5
9” 4.30’s 31 spline Yukon locker
MT 26 x 10 stiff wall slicks
Calvert 90/10 shocks
Mororo 242# trick springs
Calvert mono leafs and Caltrac bars
Viking double adjustable shocks

Rectangle Slope Font Parallel Plot

Receipt Font Number Pattern Temperature

I started posting some vids on youtube just sharing the process if you're interested. I don't have the personality to carry a channel lol. Just having some fun. Not much out there for Torino content... especially SBF stick car stuff.

Dyno video.

First passes of the year.

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tjm73

· #21 · 18 d ago

Was thinking about how impressive your combo is. What fuel do you run it on?

mikeymac

Discussion Starter · #22 · 17 d ago

rob said:
what was the weather/density altitude for the runs? i Think in good weather and once you get everything diesels in you should see over 120.

the 11.58 runs? One day was with the open spacer and 500' over and the other day was 4 hole spacer and 500' below. I put the open spacer back on for the dyno.

mikeymac

Discussion Starter · #23 · 17 d ago

tjm73 said:
Was thinking about how impressive your combo is. What fuel do you run it on?

Pump 93

mikeymac

Discussion Starter · #24 · 17 d ago

superirish said:
Good Job!!! Too bad they don't make a 1 3/4 header for that chassis, would pick up more suspect.

A guy messaged me saying my combo is mismatched and needed a 2.5" exhaust and a dual plane. I've had them and the car has never been faster than it is now lol Posting stuff on the internet gets pretty interesting.

Reactions: 2

Ed Curtis

· #25 · 17 d ago

mikeymac said:
A guy messaged me saying my combo is mismatched and needed a 2.5" exhaust and a dual plane. I've had them and the car has never been faster than it is now lol Posting stuff on the internet gets pretty interesting.

Welcome to my world!

Surprised that one of those "BoobTube" experts hasn't told you that a camshaft over .600" lift is going to cause piston to valve issues.

Quote Chris Uratchko: "Generations above them were never perfect... we all have our shortcomings. But..... you can't disagree that they don't know what bathroom to use. It's not disagreeable. And for the most part... it's an anomaly to find a millennial or younger who can even have a proper eye to eye discussion. Millennials and under for the most part have been programmed to be communist activists from Day Care to College.... It's really simple as that. Not really opinion but more fact ... And Drag Racing will be done once the money train of my generation and older have passed on."

Quote Mark O'Neal: "Virtually every customer I have has the same first interest. That is what is the lowest price he can pay. People like myself, Ed and very few others on this board have spent decades learning what we know.....and y'all want that knowledge for free....and you'll take the parts for free as well."

Reactions: 1

mikeymac

Discussion Starter · #26 · 17 d ago

Ed Curtis said:
Welcome to my world!

Surprised that one of those "BoobTube" experts hasn't told you that a camshaft over .600" lift is going to cause piston to valve issues.

I did get the PTV clearance questions a bunch in the comment section even tho I posted a video with the clay and the measurements

The flywheel really has people fired up tho. I feel like 40 pound flywheels were one of things guys bragged about back in the day with their 3/4 race cam and double hump heads.

Reactions: 2

AL P

· #27 · 17 d ago

If you could control the front end on the launch and get rid of that bog it would go 11.30s.

mikeymac said:
I did get the PTV clearance questions a bunch in the comment section even tho I posted a video with the clay and the measurements

The flywheel really has people fired up tho. I feel like 40 pound flywheels were one of things guys bragged about back in the day with their 3/4 race cam and double hump heads.

As funny as the comments are, the car would probably be faster without the aluminum flywheel, it is bogging pretty good as soon as it hits the tires.

mikeymac

Discussion Starter · #28 · 17 d ago

AL P said:
If you could control the front end on the launch and get rid of that bog it would go 11.30s.

As funny as the comments are, the car would probably be faster without the aluminum flywheel, it is bogging pretty good as soon as it hits the tires.

I think 11.3 or maybe even quicker is doable. With some seat time I'll get there. It takes some practice to make the hero runs.

In my opinion heavy flywheels steal torque. Torque is what moves the car. People love to say the inertia of the heavy flywheel will help the launch... do these people have 50 pounds of crank pulley and harmonic balancer for inertia? The bog is clutch, suspension, tire, and driver issues which I will continue to work on... again in my opinion. Also it bogged with the heavy flywheel also.

Cale at Black Magic shared his info from all of his data saying the inertia helps very little and the weight savings on each shift is worth more.

Reactions: 2

rednotch

· #29 · 17 d ago

mikeymac said:
I think 11.3 or maybe even quicker is doable. With some seat time I'll get there. It takes some practice to make the hero runs.

In my opinion heavy flywheels steal torque. Torque is what moves the car. People love to say the inertia of the heavy flywheel will help the launch... do these people have 50 pounds of crank pulley and harmonic balancer for inertia? The bog is clutch, suspension, tire, and driver issues which I will continue to work on... again in my opinion. Also it bogged with the heavy flywheel also.

Cale at Black Magic shared his info from all of his data saying the inertia helps very little and the weight savings on each shift is worth more.

Think its a catch 22 on your typical low hp street car vs a set up more to rev and race. unless your ok with upping the gearing or getting the chassis lighter, but with a 4:30 I think it probably wouldn't be an issue. I know The light weigh one I tried killed the 60ft in my car when it only had 3.73's, then 3.55's on a 26" for the bottle, car was never strictly a NA car tough, Was a tiny bit more then your race weight but I could never get it to 60ft on motor or the bottle like it would with the old billet steel no matter how much I played with the suspension and low mid 1.5s where normal on motor before I tried one and I never could show a gain from one on that car over the billet steel, ran the same on the bottle too but that was more getting a clean pass off then anything else.

I keep seeing a cheap Swiss cheese looking chromo one these days that claims USA made, that's 15lbs but haven't really looked into them ,think my old spec aluminum was 13lb and the billet steel was 18ish lbs, the cheap ass in me is kind of tempted to try one of them though lol.

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tjm73

· #30 · 17 d ago

mikeymac said:
In my opinion heavy flywheels steal torque. Torque is what moves the car. People love to say the inertia of the heavy flywheel will help the launch... do these people have 50 pounds of crank pulley and harmonic balancer for inertia? The bog is clutch, suspension, tire, and driver issues which I will continue to work on... again in my opinion. Also it bogged with the heavy flywheel also.

This might help the launch. Kill the bog.

http://clutchtamer.com/

Ed Curtis

· #31 · 17 d ago

tjm73 said:
This might help the launch. Kill the bog.

http://clutchtamer.com/

Home Depot screen door closer...

A real clutch is 1000X better than that POS.

Quote Chris Uratchko: "Generations above them were never perfect... we all have our shortcomings. But..... you can't disagree that they don't know what bathroom to use. It's not disagreeable. And for the most part... it's an anomaly to find a millennial or younger who can even have a proper eye to eye discussion. Millennials and under for the most part have been programmed to be communist activists from Day Care to College.... It's really simple as that. Not really opinion but more fact ... And Drag Racing will be done once the money train of my generation and older have passed on."

Quote Mark O'Neal: "Virtually every customer I have has the same first interest. That is what is the lowest price he can pay. People like myself, Ed and very few others on this board have spent decades learning what we know.....and y'all want that knowledge for free....and you'll take the parts for free as well."

Reactions: 1

Mark O'Neal

· #32 · 17 d ago

"A rotating flywheel having more mass than another, both spinning at the same RPM, has more energy than the other, not more torque. The engine must be under a load to produce torque, and the torque is independent of the flywheel weight. This said, the drivability and vehicle acceleration is affected by flywheel weight."

BRENTT

· #33 · 17 d ago

Nice
Try a tapered spacer to.

Mark O'Neal

· #34 · 17 d ago

rednotch said:
Think its a catch 22 on your typical low hp street car vs a set up more to rev and race. unless your ok with upping the gearing or getting the chassis lighter, but with a 4:30 I think it probably wouldn't be an issue. I know The light weigh one I tried killed the 60ft in my car when it only had 3.73's, then 3.55's on a 26" for the bottle, car was never strictly a NA car tough, Was a tiny bit more then your race weight but I could never get it to 60ft on motor or the bottle like it would with the old billet steel no matter how much I played with the suspension and low mid 1.5s where normal on motor before I tried one and I never could show a gain from one on that car over the billet steel, ran the same on the bottle too but that was more getting a clean pass off then anything else.

I keep seeing a cheap Swiss cheese looking chromo one these days that claims USA made, that's 15lbs but haven't really looked into them ,think my old spec aluminum was 13lb and the billet steel was 18ish lbs, the cheap ass in me is kind of tempted to try one of them though lol.

Heavy flywheels store energy.

GlennSullivan

· #35 · 16 d ago

Mark O'Neal said:
Heavy flywheels store energy.

Yes they do, but heavy FWs are harder to accelerate after gear changes, so IMHO whether a heavy or light flywheel is better for a particular combo, depends on alot of factors, such as Car Weight, HP, Torque, Rear and Trans gearing and Tire Size and Type.

mikeymac

Discussion Starter · #36 · 16 d ago

BRENTT said:
Nice
Try a tapered spacer to.

Yep I tried that the first couple trips this year. The time slip on the left is 1" open and almost +500' DA. Slip on the right is HVH 4 hole tapered -600' DA. I concluded the open is a tad better since its an 1100' difference in DA. With this data I swapped the open back on and that's how it was dyno'ed.

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BRENTT

· #37 · 16 d ago

About a year late. But it's close.
Heads rolled 50.5cc. Explorer block,decked. 226/238 I think, cant remember.
Should peak somewhere around yours. Probably be chassis dyno

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mikeymac

Discussion Starter · #38 · 16 d ago

BRENTT said:
About a year late. But it's close.
Heads rolled 50.5cc. Explorer block,decked. 226/238 I think, cant remember.
Should peak somewhere around yours. Probably be chassis dyno

I this you're Summit F303+ cam combo you had message me about back in 2021? Or have you changed it up since?

BRENTT

· #39 · 16 d ago

Different cam. That summit cam went on different car

Reactions: 1

Mark O'Neal

· #40 · 16 d ago

GlennSullivan said:
Yes they do, but heavy FWs are harder to accelerate after gear changes, so IMHO whether a heavy or light flywheel is better for a particular combo, depends on alot of factors, such as Car Weight, HP, Torque, Rear and Trans gearing and Tire Size and Type.

No news there ....

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