Well fellas... After I burned my very first custom chip tonite... I went and did 2 1/4 mile runs run on the g-tech. First was a 14.2 at 98mph. Second was a 13.6 at 103 mph (both were with a lot of spin since hey.. it's still wet outtehre from all that rain). This is with minor "blind" tuning. I didnt put it on the Diacom yet to see what needs to be finetuned. I fell I can be solidly in the mid 13s with the headers and more tuning.



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92 Z28 L98 350
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Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires...

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)

 

Blade,
Which bin??
Pass along that diacom . I would like to see your traces.
what size injectors you running?
Dennis


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85 vette,383,miniram,ZF6,4.10's..best ET 11.81@117.00 60' 1.65
w/100HP nirous 11.05@127
http://geocities.com/bowtie8

 

Well I just nodified the Jet Stage 2 bin I got off the chip that was my car for the last year or so. No Diacom runs yet and I run #22 stock (84K mile) injectors. Today I installed my Edelbrock headers and all I can say is Daaaaaaaaaymn!! Big differnce in throtle response and high RPM pull. I'll get some Diacom runs tonite and post

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92 Z28 L98 350
---------------
Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires...

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)

 

Blade,

No offence but ... Imagine if you put REAL headers on that car The Edelbrock headers have SMALL dual diameter primaries (1-1/2" and 1-5/8"). These are way too small for a nicely built 350. They have good fit/finish but definitely aren't the best for performance. The 350s should always get the 1-3/4" primary headers.

I've seem some nice gains by individuals who use to have the Edelbrock headers on a nicely built 350 and then switched to the 1-3/4 SLPs. Very nice performance difference. The 1-3/4 headers have 36% more area in the primary tubes as compared to the 1-1/2" tubes. That's a lot of extra flow.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's after installing Hooker LT Headers and reducing weight.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Yea but see... these were only 100 bucks. Got a REAL good deal on em (they were new!). Now compare the price of SLPs at almost 400... For me, the extra 5 HP (if that)that SLPs will give me is not worth 300 bucks

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92 Z28 L98 350
---------------
Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires...

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)

 

$100? That's a nice deal

However, expect more than a 5hp difference on a modified car. I'll be gaining around 20hp (conservative) from swapping my 1-5/8" SLP shorty's to 1-3/4" Hooker SuperComp long tubes with the 3" Y-pipe and the 4" catback. I would expect to see only 5hp on a stock thirdgen ... but not on a modified thirdgen.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's after installing Hooker LT Headers and reducing weight.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Good point... but then again I would have to have monster airflow coming out of those exhaust ports and that aint happening with my stock heads. Hehehe... Until I can afford some AFRs, I wont bother with different headers. I wanna do chips for now! Besides... If, someday, I could afford a pair of AFRs, I'm sure a pair of SLPs woudlnt be a problem either. Hehe