Turbo with carburetor - info needed
Turbo with carburetor - info needed I want to build a rear mount turbo kit for my 1978 Monza. It is a built 355 (I'm going to convert to an LS1 later and keep the turbo). I will be buying the universal STS kit and need to know a few things.
1. Will I be able to run an edelbrock 750 or do I have to switch to a holley
like ATI recomends for there procharger kits?
2. Is my cam a little to big for FI? 234/244, .497/.504, 112LS
3. Do I need a FMIC?
I will use a carb hat and boost referenced fuel pump. My compression is 9.5 to 1 and I want to run 7 to 10 lbs of boost. Any other hints or tips would be helpful. I'd like to get 450 RWHP out of this setup. Thanks in advance.
Monza355
1. Will I be able to run an edelbrock 750 or do I have to switch to a holley
like ATI recomends for there procharger kits?
2. Is my cam a little to big for FI? 234/244, .497/.504, 112LS
3. Do I need a FMIC?
I will use a carb hat and boost referenced fuel pump. My compression is 9.5 to 1 and I want to run 7 to 10 lbs of boost. Any other hints or tips would be helpful. I'd like to get 450 RWHP out of this setup. Thanks in advance.
Monza355
FormerVendor
Joined: Dec 2001
Posts: 2,444
Likes: 2
From: WWW.SPEEDINC.COM
Here is a good place for turbo/carb information.
http://turbomustangs.com/forums/foru...?s=&forumid=13
http://turbomustangs.com/forums/foru...?s=&forumid=13
A carb upgrade will be manditory. You can do the mods yourselft to go to 8psi or so but above that it will start to cost some coin. Also it might be time for a different cam somewere along the lines of a single pattern or revers split. With a little more LSA, not so much overlap.
edelbrock will not work. Holley 4150 must be converted to blow through. carb shop does it for $500.
this place might be cheaper than the carb shop www.tpcracing.com/
sealing the carb up alone, the secondaries wont flow enough fuel. they knock out the boosters, replace them, and do some other secret stuff they wouldnt tell me.
this place might be cheaper than the carb shop www.tpcracing.com/
sealing the carb up alone, the secondaries wont flow enough fuel. they knock out the boosters, replace them, and do some other secret stuff they wouldnt tell me.
barry grant makes an awesome blow through carb. you will blow the power valves out of pretty much any other carb, and on the edelbrocks, you will most likely pressurize the float bowls and have a real mess on yer hand...if not a fire.
carb shop also does good work. this months super chevy has a writeup on a blow through carb 355 that ends up making 765 hp on pump gas.
carb shop also does good work. this months super chevy has a writeup on a blow through carb 355 that ends up making 765 hp on pump gas.
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with 9.5:1 you would probably make closer to 500-550. an intercooler is mandatory IMO. some out of date inbreeders would probably tell you that you can get away without one....but i wouldnt. as for the cam, if budget allows, look for somethign with more lift, and a little wider LSA. the duration looks fine. that cam will make awesome midrange, and will spool the turbo up quickly, but you woulld be loosing a little off the top at max boost.
in other words, 450 RWHP would be easy.
in other words, 450 RWHP would be easy.
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Verdad Gallardo My compression is about 9.5 to 1. If I need to change cams, should I go with more LS and less duration? Switch to roller cam? I have a forged short block and right now it makes about 360 at the wheels. If I could gain 200 more than that would be great!
Thanks,
Monza355
Thanks,
Monza355
Originally Posted by Monza355
My compression is about 9.5 to 1. If I need to change cams, should I go with more LS and less duration? Switch to roller cam? I have a forged short block and right now it makes about 360 at the wheels. If I could gain 200 more than that would be great!
Thanks,
Monza355
Thanks,
Monza355
SC used AFR 220's a hydraulic roller with 530/520 lift, 230/242. 114. 1.6 rockers, 10 psi of boost with a D1SC procharger, pump gas, a single plane intake, with a 355 8.8:1. with some tuning, and the right jetting and timing. the motor made 765 hp and 626 tq.
I can't get new heads right now so I'll stick with the TFS heads. They have 2.02/1.60 valves and 64cc chambers with 195 cfm intake runners. I'll get a Barry Grant blow through carb, a better cam, FMIC and I'll talk to STS about the universal kit again. I'll be building this in the spring and let you guys know how it all works. Thanks
Monza355
Monza355
11 & 7 Second Clubs
Joined: Oct 2004
Posts: 1,299
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From: Motorhome, Freeways, Truckstops, Pits
Originally Posted by Monza355
I want to build a rear mount turbo kit for my 1978 Monza. It is a built 355 (I'm going to convert to an LS1 later and keep the turbo). I will be buying the universal STS kit and need to know a few things.
1. Will I be able to run an edelbrock 750 or do I have to switch to a holley
like ATI recomends for there procharger kits?
2. Is my cam a little to big for FI? 234/244, .497/.504, 112LS
3. Do I need a FMIC?
I will use a carb hat and boost referenced fuel pump. My compression is 9.5 to 1 and I want to run 7 to 10 lbs of boost. Any other hints or tips would be helpful. I'd like to get 450 RWHP out of this setup. Thanks in advance.
Monza355
1. Will I be able to run an edelbrock 750 or do I have to switch to a holley
like ATI recomends for there procharger kits?
2. Is my cam a little to big for FI? 234/244, .497/.504, 112LS
3. Do I need a FMIC?
I will use a carb hat and boost referenced fuel pump. My compression is 9.5 to 1 and I want to run 7 to 10 lbs of boost. Any other hints or tips would be helpful. I'd like to get 450 RWHP out of this setup. Thanks in advance.
Monza355
