AINT SKEERED

iTrader: (2)

I switched Headers from Macs untouched to Edelbrock stepped headers with the Merge colectors . Went to dyno today for Futral to retune as I had a lean condition it cold weather with the Macs. Rather tehn taking it to him to get retuned, I waited untillafter the header swap.

I dynoed at Thunders dyno day back in November and the car only put down 405/396 motor and I installed a dry nos kit and tried a 75 shot with the macs it went 465/482.

Went to Futrals and made a few pulls on the Edelbrocks with no tuning as they richened it back up to 13.5/1 So we left it there. It made 425/410 on motor and started out with the same 75 shot We made a pull and it was around465 hp but it was at 15.5/1 af so we did some tuning on that and the final numbers are 518/535 on a 75 shot , I picked up 93hp and 125 ft lbs of tq

This is a single Nozzle in the bottom of my lid with a #42 jet at 1050 psi of bottle psi.

As for the Edelbrock to Mac comparison, The Edelbrocks Hands down sound way better, fit Better, go on easier and Are of great quality. It made power every where over the Macs not just peak. It should do well at the track, maybe a 10th but the sound is worth the swap alone.

THe ti tech coating actually looks real nice. About the same color as the aluminum heads maybe a shade darker.

Now for some Nitrous passes to see what the extra power can do

The numbers in my sig are from when my f13 cam were tuned. This is what I am compareing the new numbers with , not what the car dynoed at Thunder as on dyno days you only get 2 pulls. It takes 4 or 5 pulls to get everything warmed up good to get the best numbers .

gomer

iTrader: (13)

What injectors and pump are you running with the dry kit now?

AINT SKEERED

iTrader: (2)

Gomer, I am running a walboro 255 and 30 psi fms Inj.

BLK02WS6

iTrader: (2)

Congrats - Great gains!! I sure wish they made those in 1-7/8 to 2 stepped - that coating is nice.

JNorris

iTrader: (4)

Great numbers!

AINT SKEERED

iTrader: (2)

John, you going to Ervington on the 20th? I am still going but I went to No problem last night and my car hooked good the first 2 passes 1.62's leaving at 4500 instead of 6000 So here is another comparison for the headers. the macs would bog down at 4500 with the aluminum flywheel. I just could not get a good clean 3rd gear shift in last night for nothing . The tranny fluid is getting changed before Ervington , Lucas is good in warm weather or after driving the car for a while but sucks when the car was trailered and 45 deg outside. WE were running 1/8th mile and having to shift slow and with a sucky1.77 60 ft ( worn out m/t drag radials) I went a 7.53 @94.88 mph

If I drive it harder I believe it will se 95+ mph in the 1/8th.

LS1_PNYTAMR

iTrader: (1)

where u get them from... i have the mac mids with my f14 cam and 4000 converter and 4.10's.. same tires.. glad to see you pulling nice 60fts and traps with that setup.. gives me HOPE for tommorow when i run mine!

AINT SKEERED

iTrader: (2)

Scoggin Dickey , talk to Kris. Macs were not really hurting my times though, I believe for power alone they were not really worth the swap on a mild setup. ON the nos or a stroker of any sort, they are better though. THe sound change was worth it to me though.

bad95killer

Nice #'s on track & dyno man

Sounds clip would be awesome though

peace

SouthFL.02.SS

Very nice results. Thanks for posting up. We need more Edelbrock comparo results like this.

AINT SKEERED

iTrader: (2)

I cant knock the qtp's for the price but these edelbrocks are the best bang for the buck out there IMO. no Slag in the primary tubes and all quality peices and everything you need to hook them up including o2 extensions. If you want to put your emissions back on later , they come with all the fittings to weld in yourself.

SouthFL.02.SS

So, just to be clear, did you get the slip-on merge collector or the fully welded LT's (merge came already in place)?
If you got the slip ons, did you weld them on? Did you weld the O2 bung into the Y or the collector?

And, also, you gained 20rwhp/14rwtq NA? Correct? That's great!

AINT SKEERED

iTrader: (2)

I willl get a clip tonight , but may have to email the file for some one to host it.

AINT SKEERED

iTrader: (2)

I am not sure of what the gain was because last time I dynoed the car , it was down on power. That was at Thunder racing and no warm up pulls.

The only true way for me to tell is go to the track and look at mph. I know at 2800 rpms, the Edelbrocks were making 365lbs of tq and the macs were at350 at 3200 rpms.

at 3200 rpm's the edelbrocks are at 370. but for some reason the Macs hit 400 ft lbs at 3800 and the Edelbrocks dont hit 400 untill 4500 but carry out over 400 lbs to 5300 where as the macs were down to 380 at 5300.

They moved the tq curve up in the rpms further where I will use it leaving at 6000 compared to tire frying tq down low. I will see if I can get a graph up later along with my last one from futrals back when allan tuned my car last time. I do think there is a little wear and tear starting to take place on teh bottom end though . It will show in mph next time I go 1/4 mile.


difference between this time and when the car was first tuned is I now have a aluminum flywheel helping the hp a little but it was on there when the car was dynoed at Thunder as well. I will confirm the mph difference and let every one know.

AINT SKEERED

iTrader: (2)

Oh I got the slip on Merge collectors. I did not weldthe tubes on , just put a tac weld on each tube to make sure it does not fall off. they fit so tight that I dont believe they will leak.

i put the o2 in the collector by Futrals recommendation.

AINT SKEERED

iTrader: (2)

http://video.ls1tech.com/player.aspx...F-E1A6994EC269


Try this link. I dont know if this is my wot pass or a idle clip as I cant get my speakers to work.

I have others I will edit in later

here http://video.ls1tech.com/player.aspx...B-919ECBE386F6

and the last one= http://video.ls1tech.com/player.aspx...4-6E94F864990B

bad95killer

Thanks for vids man & hopefully ya could break your own PB

peace

SouthFL.02.SS

The sounds of lack of traction.
Sounds great, like the Edelbrock catback sound.

AINT SKEERED

iTrader: (2)

The sound is awsome through the Edelbrock cat back but it dont flow worth a ****. I lost 24 hp through the muffler over the cutout

I think of it as a way of slowing down at the track when I get warned for going to fast. .3 and 3 mph from the cutout.

all I need now is a electric one to flip on the fly

gnx7

iTrader: (28)

So your numbers are with a cutout and not thru mufflers?

Any pics of the Edelbrock headers with merge collectors?