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Old 07-28-09, 06:43PM   #1
67Beast
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Default Looking for some info on Turbo setup

I am looking to race in a local heads up class. I am limited to a 76mm turbo with no water/methanol injection. I am looking for opinions on which set up I should look to that will allow me to use a 455, 6x head and blowthru carb. The car is a 67 firebird 3300lbs,th400, t-brake,28 x 10.5 slick 4.11 gear.

I am trying to figure out if I can be competative with this setup in 1/8th. Cars in this class are running 5.80's.

Thanks for the input.

Tom
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Old 07-28-09, 10:26PM   #2
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can you run E 85?
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Old 07-29-09, 03:11AM   #3
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There is nothing stating which type of fuel I can run in the class. All of the cars in this class are race gas/nitrous motors. I can run race gas or e-85.
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Old 07-29-09, 01:03PM   #4
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run the E 85 then or straight ehanol even better and you'll smoke these guys into the weeds . heat is the enemy of turbocharging and alchohol cures those problems especially withut a intercooler
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Old 07-29-09, 01:49PM   #5
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Thanks for the info Jeff.
Any recommendations on a specific turbo and carb setup?
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Old 07-29-09, 01:56PM   #6
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Quote:
Originally Posted by 67Beast View Post
I am looking to race in a local heads up class. I am limited to a 76mm turbo with no water/methanol injection. I am looking for opinions on which set up I should look to that will allow me to use a 455, 6x head and blowthru carb. The car is a 67 firebird 3300lbs,th400, t-brake,28 x 10.5 slick 4.11 gear.

I am trying to figure out if I can be competative with this setup in 1/8th. Cars in this class are running 5.80's.

Thanks for the input.

Tom

I dont think you will be able to run 5.80's with 6x heads. 5.80's is 9.0 in the 1/4 mile.

Your going to need about 800 RWHP and about 950 at the crank, and the car setup perfectly. Would be alot easer with alu. heads. Per the rules, are you limited to stock steel heads?
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463 SRP .035 Pistons, Eagle rods, N crank, Comp 294s cam, KRE Aluminum D-port heads 290 cfm, 10.6-1 compression, Pump gas, Torker II intake, Holley 830DP carb, TH400, Continental tight 3500 converter, 3.73 gears. First day out 11.74@116. Needs more tuning, yet to come.
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Old 07-29-09, 02:34PM   #7
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The class does not limit me to cast iron heads. I just have two sets that I could use. I am currently running aluminum wenzler II heads n/a. I am looking more towards the turbo route as opposed to nitrous. 6x's will allow me to keep the compression lower.
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Old 07-29-09, 05:25PM   #8
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20-25 psi of boost (if you use the 6X heads) , E-98 (you're going to need the belt driven Aeromotive fuel-pump), boost friendly cam, 7531 MSD box and CSU 850 carb should do the job at your weigth.
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69 GTO street car. 464 Pontiac, 88 singleturbo, 210XHD Rossler trans,
3.30 gears. 850 CSU carb, Tomahawk intake, stock block, factory N-crank
and ported 197 heads. 3650 Lbs with driver. Stock suspension.

9.25 best ET with 1.42 60
151 best mph
& 5.95/119 in the 1/8th
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Old 07-29-09, 07:01PM   #9
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Quote:
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20-25 psi of boost (if you use the 6X heads) , E-98 (you're going to need the belt driven Aeromotive fuel-pump), boost friendly cam, 7531 MSD box and CSU 850 carb should do the job at your weigth.
already have 7531, aeromotive A1000 pump(not belt drive) and a spare 850holley that I should be able to convert. I am worried that the 76mm turbo that I will be limited to might not be able to get me there.
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Old 07-29-09, 07:34PM   #10
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Can you run a roots blower?
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Old 07-29-09, 08:13PM   #11
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The rules don't specifiy for roots option, only 76mm on turbo or supercharger with rib style belt only and no air to water.
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Old 07-29-09, 09:15PM   #12
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Quote:
Originally Posted by 67Beast View Post
already have 7531, aeromotive A1000 pump(not belt drive) and a spare 850holley that I should be able to convert. I am worried that the 76mm turbo that I will be limited to might not be able to get me there.
CSU 850 from Kevin is going to safe you a bunch of time and error.. It will be pretty much dialed in when you get it from him. I would sell the 850 carb and the A1000 pump... Go with Magnafuel 500 if you run regular race gas and air to air cooler, if you go with ethanol you're going to need the belt driven pump to be on the safe side.

What short block?
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69 GTO street car. 464 Pontiac, 88 singleturbo, 210XHD Rossler trans,
3.30 gears. 850 CSU carb, Tomahawk intake, stock block, factory N-crank
and ported 197 heads. 3650 Lbs with driver. Stock suspension.

9.25 best ET with 1.42 60
151 best mph
& 5.95/119 in the 1/8th
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Old 07-29-09, 09:23PM   #13
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Interesting info.....

http://www.theturboforums.com/smf/in...?topic=67410.0

http://www.theturboforums.com/smf/in...?topic=78363.0

http://www.theturboforums.com/smf/in...?topic=27733.0

http://www.theturboforums.com/smf/in...topic=127870.0
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69 GTO street car. 464 Pontiac, 88 singleturbo, 210XHD Rossler trans,
3.30 gears. 850 CSU carb, Tomahawk intake, stock block, factory N-crank
and ported 197 heads. 3650 Lbs with driver. Stock suspension.

9.25 best ET with 1.42 60
151 best mph
& 5.95/119 in the 1/8th
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Old 07-29-09, 11:35PM   #14
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Quote:
Originally Posted by 69GTO View Post
CSU 850 from Kevin is going to safe you a bunch of time and error.. It will be pretty much dialed in when you get it from him. I would sell the 850 carb and the A1000 pump... Go with Magnafuel 500 if you run regular race gas and air to air cooler, if you go with ethanol you're going to need the belt driven pump to be on the safe side.

What short block?
I have several 455's that I can use.


Any recommendation on brand of turbo/ part number? Maybe Jeff can chime in if he can supply one.
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Old 07-30-09, 12:52AM   #15
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I can custom build you a killer 76 MM turbo if youd like.specific for your combo! You really need to look at the rules too. sometimes the opening can only be 76 MM and we can runa larger turbo. depends on how things read and how they are interprted just like in a stock eliminator class car.


69GTO why would you suggest not running the A1000? JUst curious. I have used my A1000 and loved it and the new ones will support 1200 HP boosted from what areomotive tells me.

Magna fuel steered me away from thier pump when I first started out and told me it was not properly set up for boosted applications.

Personally if I was gonna go class racing Id probably run a weldon pump.But they can be pricey
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