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

need estimates from others

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Old 09-07-2006, 11:29 AM
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i would like to know what i can expect from what i am doing. lt1 block i am doing the following.


full forge 383 with 10.5:1 compression ratio
lt4 hotcam
1.6 full roller rockers
ported intake to match heads
ported lt1 heads that outflow lt4 heads

what would you think i will be having at the crank
Old 09-07-2006, 11:50 AM
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ditch the hotcam.... that motor isnt going to make near enough power with that little *** cam... i dont understand why everybody always goes for the hotcam first... get an off the shelf or a custom grind would be alot better... from AI or LE... or Joe O..... one of those will really get you the power your looking for...
Old 09-07-2006, 12:39 PM
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Hot cam? thats like 218* on the intake right? It will have a pretty flat torque curve, thats for sure. I think it's just a TAD on the small side It really depends what your shooting for tho. whos the head porter? that can dictate quite a bit how much power is being put down. i donno about the crank, but thru an auto, I'd say you'd be 25 hp shy of 400, at the wheels.

I know these are impalas, but it will give ya a few ideas. look at the duration class 2 tends to run, and they are in barges that have a 400lbs disadvantage. http://dan.esteban.com/impalass/Retu...electedClass=6
Old 09-07-2006, 12:43 PM
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Originally Posted by harvickgm
ditch the hotcam.... that motor isnt going to make near enough power with that little *** cam... i dont understand why everybody always goes for the hotcam first... get an off the shelf or a custom grind would be alot better... from AI or LE... or Joe O..... one of those will really get you the power your looking for...
they go for the hot cam because they see so many others using it, and they think it's the end all, be all of cams. and they got a deal on it... Not to be a Dick, mr thread starter. I think a mid 22* intake duration is better suited to a lighter car(than a caprice), in a 383. But that page is proof, that an 845 camed 383 can put a caprice into the low 12's.
Old 09-07-2006, 09:16 PM
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call Joe O/ and spray the pi$$ out of it
Old 09-07-2006, 09:22 PM
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go bigger, you'll regret that Hotcam. Not meant for a 383.
Old 09-07-2006, 09:27 PM
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I have the LT4 Hotcam in my car, but I am still stock Block and Heads. That is what that Cam performs extremely well with. And if there is any questions on that, read the times...
Old 09-08-2006, 08:35 AM
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the only reason i am getting it is becuase i foudn a lt4 hotcam kit that has 1.6 full roller rockers, lifters, cam. for 500. i thought possibly going with a 224/224
Old 09-08-2006, 08:36 AM
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with a cam for that application of a motor what could i expect with everything else at the crank anyway.
Old 09-08-2006, 08:43 AM
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I found it for $500 new also, on Summit. Get you something like 228/236, 525/530 with 1.5's, 112 LSA. Then put your 1.6's on that. That will give you a good result.
Old 09-08-2006, 08:45 AM
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here is what i seen on a guys car that is running almost same app. comp cams 220/230 540 cam
Old 09-08-2006, 09:04 AM
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If youre going big, try to bypass the the Hotcam Kit.

Don't get me wrong its a great cam and very tempting in that nice little $500 package, but if I where going to be aiming at a more serious route, I would piece together my own kit, and get dual valvesprings. Not to mention new guideplates (and all the other valvetrain parts.... pro mag rockers, roller lifters, etc...)

Then you can just pick out the cam yourself. I recommend Comp Cams but alot of companies make a nice cam now. Which is good.

I like the 224/230. To give you an idea of Cam Selection, truly the most important piece of a new valvetrain, try this...
http://thunderracing.com/catalog/?ac...&vid=4&pcid=51
Old 09-08-2006, 09:13 AM
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the only reason i am getting it is becuase i foudn a lt4 hotcam kit that has 1.6 full roller rockers, lifters, cam. for 500. i thought possibly going with a 224/224
thats not a good deal
Old 09-08-2006, 09:40 AM
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Originally Posted by aggiez28
thats not a good deal

You get what ya pay for. And I'm not saying you have to spend an arm and a nut, but I really dont think you should skimp out on the valve train. Look at my cam (bigger than hotcam), I like it and all but it's not what I wanted. Already talked to AI about making me a custom
Old 09-08-2006, 10:08 AM
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does anyone have some guesstimates of what i will be putting down with proper tuning. and everything will corrospond to the 383. Whell HP?
Old 09-08-2006, 10:18 AM
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360-375
Old 09-08-2006, 12:42 PM
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Looks the forum is going to have another Half assed stroked LT1, YAY!




DO NOT PUT A OFF THE SELF GRIND ON A STROKER MOTOR! I wont make good poor and it will be slow and a waste of time and money.

Yeah they make be nice with boltons, but were not talking stock cubes anymore do it right and get a custom cam grind.



Theres a guy around here with a 396 hes got a small baby cam, and running so decently ported heads. Geuss what the car on a slick cant go faster than 12.5s why?! Because the motor cant BREATH, its really pathetic to see somone spend all that money and not do it the right way.


Call JOE O and Lyd have them make you a custom cam
Old 09-08-2006, 12:43 PM
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If anyone has a problem with what I said, well then you will always have a slow car.


A hot cam on a 383!!!!!!!!!!!! Talking about choking that poor poor motor.



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