LT1-LT4 Modifications 1993-97 Gen II Small Block V8

My 355 BUILD

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Old Apr 21, 2005 | 11:50 AM
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Default My 355 BUILD

Well i'm allmost done with my car should be up and running in about a week or 2 this is what iv'e done. First off its a 93 speed density built A4 with 3200 stall, lt1 355 eagle crank eagle 6 inch H beams rods JE forged pistons 11.5.1 compression. The rotating assy has been balanced the deck on the block was set, and i'm runing a set of lightly ported edelbrok performer heads
with the 195 intake and a 155 exhaust valves. I'm runing a 1.6 roller rocker and the cam is going to be A Comp cams grind in the range of 242/248 584/579 with a 113 lsa. I have a full ported lt1 intake port matched to heads bbk 58mm throttle body 37lb injectors adjustable regulator bbk shorty headers borla full 3 inch system k&n cold air msd 6al throttle body bypass, and i will be getting my ecm tuned.
I'm also going to spray a 150-200 shot depending on how it responds to the 150 shot im hoping to get to the mid to low 11's.
Do you guys think this is a likley et provided what i have done?

Thanks Grant.
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Old Apr 21, 2005 | 12:02 PM
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u should be running mid 11's on the engine..
my 355 will be done in 2 weeks too. i'm going to have 10.5:1 or so compression...who is building your engine? ALL local shops around here as well as cmotorsports told me anything over 11:1 will ping , so i stayed in the 10's.

i have a 6 speed, le2 heads. 236/245 111 lsa cam and plan on running 11.70's on the engine. u have a slightly more aggressive setup,,mid 11's for sure. spraying 10's.
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Old Apr 21, 2005 | 12:03 PM
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How's your rearend?
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Old Apr 21, 2005 | 12:30 PM
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Originally Posted by Bandit Z
How's your rearend?
It's the stock 10 bolt with 373's I know i plan i braking it.
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Old Apr 21, 2005 | 08:24 PM
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I have a similar setup with a CC306 and 10.8.1 compression. The heads are ported LT1 castings but are done right. I have been 11.20's@120mph on motor with an auto and 3.42's in the stock rear. With a 150 it ran 10.30@130mph on pumpgas and the stock rear. Since then I put a new 8.8" rear. It now runs 10.17@133.6mph spinning so you should be able to run in the 10's with your setup and n2o. Yeah it has never been dyno tuned either. Later
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Old Apr 21, 2005 | 10:38 PM
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Thats a bunch of mismatched parts if I've ever seen it.
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Old Apr 22, 2005 | 06:49 AM
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Originally Posted by DietCoke
Thats a bunch of mismatched parts if I've ever seen it.
missmatched parts????? Well it would be nice if you could elaberate.
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Old Apr 22, 2005 | 10:40 AM
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i think he means the rotation assembly isn't all one brand...
mine is an eagle crank/rods and j&e pistons as well....
ever think about my compression theory? you're going to ping.
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Old Apr 22, 2005 | 11:14 AM
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Originally Posted by Mystic97z
i think he means the rotation assembly isn't all one brand...
mine is an eagle crank/rods and j&e pistons as well....
ever think about my compression theory? you're going to ping.
I was doing my research on this before i put it together and there seems to be alot of people out there runing 11.5.1 on pump gas without any problems as long as the timing and fuel are set up right.
I heard its when you get into the 12s then thats when you have to run race fuel.
If you heard somthing diffirent than let me know.
this isn't going to be my every day driver but then again I don't wan't to have to run to the speed shop every time I want to drive it either.
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Old Apr 23, 2005 | 01:42 AM
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http://www.chevyhiperformance.com/fe...ehicles/62039/

This guy is running high 10's with 14.5:1 compression on pump gas. It's all in the combo and "prep". I know this isn't a true daily driver and not a common thing but it's possible.
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Old Apr 23, 2005 | 04:08 AM
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Originally Posted by BOTTLEDZ
missmatched parts????? Well it would be nice if you could elaberate.
We'll start with the heads. They costed unneccesary money, and will flow less then a set of good ported stock castings, and wont make as much HP. The rotating assembly is great. That cam is going to be a monster, does not match the heads flow characteristics in the least. Intake and TB are pretty normal, since it's what LT1s have to work with. 37lb injectors are oddball, but wont be hurting anything. Adjustable FPR doesn't make sense to me, why would you need to change your FP on a non-boosted application? Stock would be better here. BBK shorty headers are the worst headers EVER for the lt1. They don't complement the heads, the cam, or anything else for that matter. Ignition/exhaust is fine.

I went 11s@116 with a stock shortblock, smaller stall, much smaller cam, stock 48mm tb, mail order tune, stock ported heads, and drag radials. I think your just spending your money in the wrong places, especially if you want to go fast.
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Old Apr 25, 2005 | 12:54 PM
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Originally Posted by DietCoke
We'll start with the heads. They costed unneccesary money, and will flow less then a set of good ported stock castings, and wont make as much HP. The rotating assembly is great. That cam is going to be a monster, does not match the heads flow characteristics in the least. Intake and TB are pretty normal, since it's what LT1s have to work with. 37lb injectors are oddball, but wont be hurting anything. Adjustable FPR doesn't make sense to me, why would you need to change your FP on a non-boosted application? Stock would be better here. BBK shorty headers are the worst headers EVER for the lt1. They don't complement the heads, the cam, or anything else for that matter. Ignition/exhaust is fine.

I went 11s@116 with a stock shortblock, smaller stall, much smaller cam, stock 48mm tb, mail order tune, stock ported heads, and drag radials. I think your just spending your money in the wrong places, especially if you want to go fast.
Well the headers came with the car. I will be going to long tubes in the near future but I'm waiting till i can due the single 4 inch mufflex system with the spintech muffler As far as the heads go I was going to use my stock ported heads untill i realized that they were way to beat up after the last motor went and tooK half the intake and exhaust valve with it. I came across the edelbrock performer still in the box zero miles on them never had a wrench turned on the for $800.00 so seeing how even if i'm not satisfied with them I can sell them and make my money back I went with them (IF YOU KNOW WERE THE FLOW NUMBERS ON THESE HEAD AS LOCATED PLEASE LIST A LINK)
last and final the cam specs were quoted to me by comp cams so, i trust they know what they are talking about.

Last edited by BOTTLEDZ; Apr 25, 2005 at 01:27 PM.
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Old Apr 25, 2005 | 04:08 PM
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Originally Posted by BOTTLEDZ
I was doing my research on this before i put it together and there seems to be alot of people out there runing 11.5.1 on pump gas without any problems as long as the timing and fuel are set up right.
I heard its when you get into the 12s then thats when you have to run race fuel.
If you heard somthing diffirent than let me know.
this isn't going to be my every day driver but then again I don't wan't to have to run to the speed shop every time I want to drive it either.

my friend has a 10 second vette that runs on 92 octane. I know of a lot of cars that dont run race fuel and hit 11's all day long.
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Old Apr 25, 2005 | 04:08 PM
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Originally Posted by speedluv
http://www.chevyhiperformance.com/fe...ehicles/62039/

This guy is running high 10's with 14.5:1 compression on pump gas. It's all in the combo and "prep". I know this isn't a true daily driver and not a common thing but it's possible.
absolutely nuts.
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