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Building a high compression ls1 or go bigger

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Old 02-21-2011, 12:11 AM
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Default Building a high compression ls1 or go bigger

Im wanting to build a high compression ls1 and just wonder if i should make it a 347 or a 383, or should i get a different block and go bigger?
Right now I have an ls1 with arp rod bolts, MS4 cam, PRC Stage 1 LS6 heads and an LS6 intake. Im wanting to sell all this and go solid roller with a fast 102. Not sure what heads would be good and i want it to be roughly 13.2 to 13.4 to 1 compression. Im sure i left alot out, but have some questions

Car is a 99 camaro. It is a 6 speed as of now but will probably get a th400.

Thanks for the help ahead of time, James
Old 02-21-2011, 07:45 AM
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it all really comes down to what you can afford, I built my 383 cause the forged stroker parts were only a couple hundred more than stock displacement, and my block was good. Now if I had more cash,,,I definately would have went with the 427 route. You can never go wrong building the biggest engine you can, there is no replacement for displacement. The old saying is, speed costs money, how fast can you afford to go?
Old 02-21-2011, 08:34 AM
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I will first say a 383 is your most cost effective way of adding compression naturally along with making more power. Second a fast 102 and a solid roller are recipe for disaster. Your going to want a vic jr or sheet metal intake to keep up with the cam. Just keep it efi.
Old 02-21-2011, 05:16 PM
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Yea ive thought about a vic jr or even a super vic, with an elbow, Just trying to get an idea. But i want matched parts, dont want it to be mismatched and not run worth a sh#t. Does anyone make a dome piston to do a 383? Meaning to get higher compression
Old 02-21-2011, 05:27 PM
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Higher compression is not necessarily the best way to go about it. What are your plans for the ride.
Old 02-21-2011, 06:14 PM
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Well E85 is prevalent around here so i figured y not use it. Would like my car to run mid 10s on motor and 9s on spray. Mainly a drag car, but something i could take down to get a burger in town.
Old 02-21-2011, 06:16 PM
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Kinda want it built how futral's car was back in 2003 i believe. And since technology has got even better since then, I figured it might be a little easier now
Old 02-21-2011, 07:38 PM
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you will need a bigger and better fuel system for E85.bigger pump and injectors.
Old 02-21-2011, 11:54 PM
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Yea i know all about the pump and injectors for E85. Thank you. Just wanting to build something to run hard on e85. Thought about going turbo, but way too expensive right now
Old 02-22-2011, 12:33 AM
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^^^

GCA Days should be interesting this year you saying? I finally broke down and sold my talon after making 67 lb/min airflow and building an h/c/i/nitrous lq9/l92 fc rx7, which im hoping to be done by GCA Days. Guranteed I wont have the money to get suspension/stickies setup by then, but will most definitely be there. Hopefully with a running car for once, last year I blew my tranny on the way up there.
Old 02-22-2011, 01:28 AM
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Wont be for me. Doubtful i will have everything done. Car is getting repainted before anything.
Old 02-22-2011, 07:01 PM
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Need any ideas
Old 02-22-2011, 07:32 PM
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346 or even 383 in 10's, better have car go on very big diet.
Old 02-22-2011, 07:45 PM
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Originally Posted by nwalton29
346 or even 383 in 10's, better have car go on very big diet.
So you're saying a full weight car with a 346/383 will never see 10's.
Old 02-22-2011, 08:22 PM
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Originally Posted by bamaballa205
So you're saying a full weight car with a 346/383 will never see 10's.
Getting a full weight into 10s is not easy feat. But a well thought of 500+ rwhp would plant you there in mid range.
Old 02-22-2011, 08:37 PM
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Wasn't saying it was easy but with the right suspension setup and gears. 450-500 rwhp will get ya in the high 10's especially on a auto like he's planning on running.
Old 02-22-2011, 08:44 PM
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I have done so with just LCAs and removal of front sway. Sticky tires;
shoot, removing the front sway is not stock weight anymore
Old 02-23-2011, 03:36 AM
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This car has no back seat, no ac, im taking out the heater setup completely. Will have tubular front suspension, manual brakes. Basically getting very light. Will be a mainly drag car, but on the street limited. Also we dont have smog and can get away with alot where i live
Old 02-23-2011, 03:37 AM
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Dont know if i said it, but the car will have a transbrake and whatever stall it takes once I get the engine setup figured out
Old 02-23-2011, 04:34 AM
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I think you need to call an engine builder or shop. You dont know what you want and are asking random people how to spend your 10,000$.


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