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Discussion Starter #1

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i have a question for you, i havent got to dyno my car yet, i was told it should make around 500-550 whp. what do you think.
procharged, 383 LT1, 42.5 lbs inj. 8.5:1. port and polished heads, gasket matched intake. on 14 psi. with 109 octane.
thanx for the help.
owe and how much for a tune?
 

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Discussion Starter #3
$450.00 for a tune. 500 to 550 with 14 psi is probably real close to what you will see. You'll have a quick LT1. Check out our '95 Formula in my project car section of my website. It runs 11.32 at 118 mph with very little power. Bob
 

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thanx for the help. when i go for a race tune, ill prolly come to you, right now i just want the car running properly.
 

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Exotic Performance Plus said:
$450.00 for a tune. 500 to 550 with 14 psi is probably real close to what you will see. You'll have a quick LT1. Check out our '95 Formula in my project car section of my website. It runs 11.32 at 118 mph with very little power. Bob

You mean to tell me a 383 w/ heads, LT, decent cam 230/240 range will only put down around 500-550 to the wheel w/ 14 psi?! So how much is needed for 700-800rwhp then? Are his injectors a factor with the number you've suggested?

I'm thinking 383 w/ 14 psi should at least be hitting 600rwhp but I'm not S/C guru either but I'm seeing 355's put down that much w/ 8 psi. :dontknow:
 

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i was gonna say, 42lb injectors seem small for that setup... 42lbs is what i run on my H/C car...
 

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Discussion Starter #7
srz said:
You mean to tell me a 383 w/ heads, LT, decent cam 230/240 range will only put down around 500-550 to the wheel w/ 14 psi?! So how much is needed for 700-800rwhp then? Are his injectors a factor with the number you've suggested?

I'm thinking 383 w/ 14 psi should at least be hitting 600rwhp but I'm not S/C guru either but I'm seeing 355's put down that much w/ 8 psi. :dontknow:
Keep in mind that I have a Mustang Chassis dyno that uses eddy current, which puts a load equal to the road on the rollers. This gives you a 40 to 50 rwhp lower rwhp than a non eddy current dyno, such as the Dynojet.

The heads on the LT1 engine are the main limiting factor. If a set of AFR heads were used, horsepower would indeed go up. Bob
 

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Discussion Starter #8
Jaberwaki said:
i was gonna say, 42lb injectors seem small for that setup... 42lbs is what i run on my H/C car...
42lb injectors work on my Mustang Chassis Dyno up to the 550 rwhp mark, it will be close indeed on his car to 100%. Bob
 

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Thanks for clearing that up Bob. 60lb injectors should be the minimum I'd think. 600-650rwhp in your opinion can't be obtain w/ LT1 castings? That sucks if that's the case cause I'm hoping to get in that range w/ my ported heads. Flow close to 280/195 w/ those puppies too.

Do you sell the SCDE setup for the 8 rib pulley system for the LT1's? All I read about is this setup but on LS1's. Thanks!
 

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No I don't carry the SCDE line. Sorry. Bob
 
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