I'm glad that I am making someone happy. My reason for going into so many "what-ifs" is that I know that there is a guy out there looking at the rules and scheming up that killer combination of factory parts.


I wouldn't do it. The iron heads are actually pretty good. The biggest down side is the press in studs.


We left things open for the guys to have more chances at finding a good used motor to put into a car for this class. Head swaps aren't legal, but engine swaps are.

 

It would be funnier if one won the thing!

 

If you guys are planning to run this please go to the Shootout Forum and post your intentions.

http://ltxtech.com/forums/showthread...734#post190734

 

"OEM alternator must be in place and functional at all times. No loose belt, etc. "

Does that mean OEM place, or can it low mount?

 

Low mount is fine. It just needs to be a stock size alternator. We will be doing random checks for alternator output too.

 

Wow! You're expecting some real Smokey Yunicks to show up aren't you!

 

Those rules that are particular to NHRA rule book needs to be scanned and hosted somewhere for us to view that are not NHRA members nor run at NHRA tracks.

Searching online has led to no published rules that pertain to those listed. If they are out there please provide links for us to look at.

Thanks.

 

The B-bodies I have seen actually work really well despite the weight disadvantage. I think in a lot of cases they just plain hook up much better than F-bodies

 

LOL! I can guarantee you that's not it. Trust me, until you've tried to get one of these long wheelbase biotches below 1.50's, you have no idea how easy you "toy car" guys have it
It all goes easy until the low 1.60's, then it gets picky.

 

I think that most everything is here. Let me know if you don't see a particular thing and I will look it up.

https://ls1tech.com/forums/drag-raci...rness-etc.html

 

Low 1.6s is better than ive been. lol They just seem to transfer real good for your average bolt on or H/C car. 1.5s is really good IMO compaired with stockish f-bodies.

 

Don't get me wrong here, the average B-body person thinks he just whipped the entire world's *** when he gets his first 1.8x 60' ... lol!
Did you see the problems we yacht drivers were having getting off the line at BG last year? The only time I dead hooked was on the first qualifying run. None of youse guys even seemed to notice that they let the starting deteriorate so badly.

 

Actually down the track went away more than the start. The end of the day was getting dangerous . I know some like myself were skating all the way down the track, on and off the throttle.

 

I need this part of the rule book: Heads must hold NHRA published volumes

 

^

lol.

 

You obviously don't know me!

 

NHRA Technical Specifications
For
1996 Chevrolet Motors


ROD
BORE STROKE DISPLACEMENT CYLINDERS LENGTH
4.000 3.484 262 6 5.700
3.750 3.000 265 8 5.964
4.001 3.484 350 8 5.700 4/29/2008


Issued: 2-16-96
Revised: 9-7-96, 6-8-98, 8-3-98, 8-28-01, 1-31-02, 7-29-02,9-11-02, 01-08-03 , 3-06-03,
1-27-04,3-23-04,11-15-04, 8-15-07 WR, 2-6-08 WR, 1-1-09 WR, 10-20-09 PC, 3-3-10 PC


R.R
H.P. Disp. C.R. Ind. Make Model Manifold Lifter Head cc Notes

200 265 10.7 PFI AC/Roch 17095240 12552137,10108630 1.5 H/R 45.5 1
260 350 10.1 PFI AC/Roch 12552138 1.50 H/R 62.0 1
275 350 9.9 PFI AC/Roch 17093107/170945053 10108471,10108629F 1.50 H/R 51.9 1
17094163/17108091 10108630,10208145
12552138
300 350 10.4 PFI AC/Roch 17093107/170945053 10108471,10108629F 1.50 H/R 51.9 1 17094163/17108091 10108630,10208145
12552138
330 350 10.8 PFI AC/Roch 17096246 12550631 1.60 H/R 51.9 1

Notes
1 - Throttle Bores - 2 x 1.889" (48mm)



Deck Piston

H.P. Disp. Cl Type Height Vol Valves Cam Lift Springs

200 265 .015 Flat w/n 1840/1500 418/430 Outer w Damp 1
260 350 .025 Flat w/n 1940/1500 418/430 Outer w Damp
275 350 .015 Flat w/n 1940/1500 449/460 Outer w Damp
300 350 .015 Flat w/n 1940/1500 449/460 Outer w Damp
330 350 .015 Flat w/n 2000/1550 476/479 Outer w Damp


Notes
1- Factory replacement piston is dished (2.5cc’s) with notches.


H.P. Disp. Gasket Head Cast

200 265 .025 12529742,10208890,12554291
260 350 .029 12554290, 10125320
275 350 .047 10205245,10128374,14088526,10207643,12551561,10207 640
300 350 .047 10205245,10128374,14088526,10207643,12551561,10207 640
330 350 .036 12555690,12555332


Cylinder Head Runner volumes

L99 175/63 CC

LT1 175/62 CC (Iron head)

LT1 175/68 CC (Aluminum head)

LT4 195/75 CC

 

Ok so if I'm reading that right, 51.9cc is the NHRA published combustion chamber volume for a aluminum head LT1?

 

Yes. All these numbers are what GM submitted to the NHRA. Things that are bold were added or changed by me. Some of these numbers are liable to change, so I wouldn't suggest that everyone run out and blueprint their motors quite yet!

 

Interesting