how far did you go and did it hurt low rpm torque?

Madmax avesome post and dyno figures made me assured that mod would be nice for looking more high rpm hp's

any problems with that mod? can i go through like Madmax did or should i stay just cutting few inches?

what's the best way to do it? hacksaw? something less brutal?

if you have done it, how's your ride now after 5000rpm?

thanks!

- P

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Pontiac Trans Am GTA'89

CC1 GW6 G80 JG1 L98 MXO N64 WS6 822

mods: firebird '89 four spoke steering wheel and i'm still not running low 13's yet!

 

Here's a fast way to remove 1 1/2". The best part is it only took 2 hours to do all of them. Requires a die grinder and a dremal.







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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

John, You're the picture man!!! Great illustrations!

------------------
Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff., Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Turbine Technologies 2500 stall converter, underdrive pulleys, Crane Hi-6 & more.
1.05g skidpad verified.
Best of 14.039 at 100.82 MPH in Stanton, MI
New! 275-40-ZR17 tires on ROH ZS 17 x 9.5's

 

John, nice pics thanks! i saw from your signature that you're not running plain stock engine did you noticed any difference?

i just wonder is there any downsides doing siamese mod? since i have no spare tpi base.

-p

 

I just did it on my spare base(bought for $50) and I can't install it till I get a new baseline at the track. I've did a couple other mods and need to see the improvement before I slap the intake on and run it again. I will post times since I don't have access to a dyno like MadMax did.



------------------
86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

John,

have you been on track and changed the base? i really want to mod my intake base since car's so slow

-P

 

That's my old intake
Common John, get to the track and quit holding us in suspense!

------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

Date: may 30, 2001

I swapped out the modded intake this past Sunday. I'll tell you it woke up on the street, the thing pulls hard past 6000 rpm now and it revs so much quicker. Big smile on my face this week driving to work.

I took it to the track tonight and tested it, not much improvement on ET. I did get a new best with a 8.57 in the 1/8th as compared to my old of 8.59, MPH stayed the same around 80.5 to 81.6mph. Not consistant, I can get 1.9 60' times and do the 8.57 and sometimes I suck and pull 2.1 60' times and the ET reflects at 8.82, I think it's all me though.

I'm also working the bugs out of the new speed density computer, I used to be MAF. It's running very rich right now so I think the times will improve with some more tuning.

John




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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

Hows your low end? did it suffer any?

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes

 

Nope, I can still smoke'em at a blip of the throttle.

 

John, you MPH does suggest a HP improvement, even with only a 1/8 drag. I would suspect that if you did a full 1/4, that you would notice an ET improvement and a even greater MPH improvement as this mod suggests a "top end" increase. It definitely suggests that you didn't loose any torque given the short 1/8 mile run.

Drop me an e-mail sometime, I would be interested in any tuning issues you may have. Did you and Bernard ever get those AT29C256s to work on a different computer?

 

John,
what is the cam like in your 383??
it would be interesting if it wasnt too different from the L98 cam. just curious because if someone just went ahead and did this and left the stock L98 or worse yet the peanut in there I think it might be a different story past 5000.
let us know though.
james

 

http://members.home.net/millicanga/camcard.htm


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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

I never did, ask Bernard, he's the burner mastermind. Actualy we went in half on the programmer and he has it right now.

 

i seen the pics of the modded base and you said it revved freely but what runners do you have are they siamesed too?looking to completely hog out my slp runners and am thinking with an open plenum and an open set of runners the runner length would change and since the base has the only runners that are divided it will be able to breathe a lot better!!!!!!!!

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87 trans am 350 L98 aluminum heads,LT4 hot cam,slp runners,1 5/8 headers,y-pipe,edelbrock base,hi flo cat,air foil,afpr,ported plenum,t-5 tranny w/centerforce clutch and a 3.27 9bolt(11.9in. brakes),ads strip chip,relocated iat sensor,tb bypass,hollowed maf,a/c delete(whole lotta room in there now)

14.10@97mph w/2.01 60'


siamesing the slp's and my fastchip eprom is on it's way

 

I have completely stock runners. No modifing there. Must get some SLP runners soon.



------------------
86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project