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To go FI or build motor???

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Old 10-08-2005, 11:05 AM
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okayyy. does RPM have a website? Also.... any update on that quote..? Thanks
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Old 10-09-2005, 09:53 PM
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Originally Posted by Superman09
Haha that is true..... but in this situation with this much money involved, if i built the motor before i blew it up, i can sell my good parts that i changed to help pay for the turbo, same with trans and rear! Soooooo still not sure to go turbo or motor first. If i go motor first i can have about 350-375 hp for a while and bullet proof motor ready for large boost as soon as i can get the turbo..... If i go turbo first, i can run like 7 psi to start and be at like 450 hp but will risk blowing my motor.... hmmmmmm, its really a question.... Do i need the power that bad that i can risk not having the money for more power later.... as in if i blow my motor it will take a ton of money to fix it so i wont have the money to make more power..... Right now it seems that motor first is best situation.... but other days i keep thinking i should go turbo first and get some power flowing!!! How about FLP trannys? Stage 4 or 5? Where can i buy those, are they def worth it? Ive heard good things
Bulletproof and forced induction dont belong together. There are ALWAYS chances of problems happening.
Old 10-10-2005, 11:11 AM
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Originally Posted by ddnspider
i disagree....its been stated b4 that droping the CR a full point you lose somewhere in the neighborhood of 3-5% so do the math,lets say you make 400rwhp...drop it a full point and you lose WHOPPING 12-20hp and you DONT have to spend more money all over again for new heads and cam and such.its stupid to do things twice.For examply,PurEvl is making about 450rwhp on his 408 at 8.5:1 CR until his turbo kits finished.dont do things twice,be patient.
Yea I have seen PurEvl's numbers on just the 408 at 8.5:1 CR in his sig, but thats on a 408. Now if he were to do the same on a stock 346, and drop the CR down to 8.5 or 9.0 with a blower cam (such as the lingenfelter GT2-3) what kind of power do you think it would make? I always thought that dropping the CR from the stock 10.1:1 to say 8.5 would hurt NA perfomance more than that. Im not trying to disagree with you, I just didnt know that it didnt effect the power output NA that much?
Old 10-10-2005, 11:45 AM
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well i have that specific cam in my NA car now.all the car has is intake/exhaust and the cam and it made 350.so you figure with boltons and heads you could possibly see high 3--'s but why do you care what you make NA if your going to boost it down the road.so you make 340 NA now,still fun to drive,then when the turbos on you make 600+,have your cake and eat it too.
Old 10-10-2005, 12:03 PM
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No I agree, theres no reason to dig into the engine twice, I just thought that lowering the CR that much would really effect the NA HP numbers significantly (like a 20% drop or so), and that doesnt seem to be the case. Thanks for the info!
Old 10-10-2005, 01:06 PM
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Hmmmm. i want a 408...... can i get one fully built in my car for about 7 grand ish? Or whats the price? I jsut dont know how id build it tho.... build it with low comp for FI later or pure power now.....
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Old 10-10-2005, 01:56 PM
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You can get a 408 iron short block with forged internals from once of the sponsors for about $4000. You could also get a 402 forged aluminium short block for about the same. Youd then have to get a cam and all the valvetrain componenets, heads (figure around $2200 for afr 225's), then an intake (assum a fast 90/90 combo) and then injectors, etc...so its gonna be expensive. Im sure you can PM one of the sponsors, such as MTI or HPE or one of the other ones that builds engines and they can get you a quote for a complete longblock 408. Id guess though that any complete longblock, 402 or 408, is gonna be at least $7 grand if not more.

Last edited by 98Z28MASS; 10-10-2005 at 02:08 PM.
Old 10-10-2005, 01:57 PM
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Also you would want to build it for low comp like PurEvl has. He has 450rwhp right now and that is NA on a 408 block, which is damn good.
Old 10-10-2005, 02:00 PM
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that would be what i already stated.....APE also isnt a sponsor and screwed so many members on here.and you dont NEED AFR's but if your going all out go with either AFR ALL PRO or others have have a thicker deck if your making 1000rwhp or more.
Old 10-10-2005, 02:01 PM
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Heres a link to the 402 short block:

https://ls1tech.com/forums/generation-iv-internal-engine/243997-ls2-402-short-block-sdpc.html

and another 402 short block:

https://ls1tech.com/forums/generation-iv-internal-engine/357798-texas-speed-402cid-ls2-short-block-special.html

as for the 408 you can contact Texas-speed and they could quote you a price
Old 10-10-2005, 02:08 PM
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Originally Posted by ddnspider
that would be what i already stated.....APE also isnt a sponsor and screwed so many members on here.and you dont NEED AFR's but if your going all out go with either AFR ALL PRO or others have have a thicker deck if your making 1000rwhp or more.
Yea he just asked though what to build it for and i was just reiterating it for him. Also I apologize, APE isnt a sponsor I meant HPE. Ill fix my last post and yea I heard they fucked a ton of people huh? Im sure there is a post with all the info but just quickly do you know what happened? Was it faulty engines or not delivering on time? I just mentioned AFR's too because they seem to be the head of choice for the 402 and 408 blocks, but you could go with any head, just naming the best thats all.
Old 10-10-2005, 02:15 PM
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HPE is whose doing my motor,theyve been awesome with me so far,and a friend who has the same motor as me is doing quite well atm. APE basically just took most peoples money and never sent a motor.
Old 10-10-2005, 02:23 PM
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Wow what a bunch of ********. Yea I saw a few guys with some stuff about APE in their sigs and didnt know what happened, thats a shitty move though, especially by a sponsor. Yea I have only heard good things about HPE, what are you building right now, 408? Also, what are you using it for? Are you going turbo, spuercharger, or nitrous? I would love to have a 408, but im gonna start with camming my 346 right now (FM13 goin in real soon) and see how I like that. I was gonna forge my stock short block or go 402 or 408 and eventually a turbo but I dont get to the track a lot so im gonna start off with a cam and see how it fits my power needs/goals and go from there. No need to build a 10 second engine if I dont need it. My buddy though is actually getting his 402 short block from texas-speed. Hes not sure on the heads/cam combo yet but wants to spray a 250-300 shot (already has a direct port on a fast 90 intake on his 346 spraying a 150 shot).
Old 10-10-2005, 02:28 PM
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Turbocharged, forged 383 for me.
Old 10-10-2005, 03:00 PM
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Nice, what turbo kit are you going with?
Old 10-10-2005, 05:15 PM
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what i was saying before is that as long as you are responsible enough to not push your motor further then you should you will be fine and not blow the motor. just get a good tune and run it safe and you will make plenty of power reliably.

that way you can have your power you want now, and save up for a motor. if you buy the motor now, ya, it will be forged, but you will get antsy and want to do something to it.

Thats just my 2 cents.
Old 10-10-2005, 05:49 PM
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Originally Posted by ddnspider
im getting so close i can almost taste it!did u check out Ed Blown Verts numbers with the same motor?im hoping for a bit more than that,i was talking to him about it and saw his vid....freaking sick setup.i get giggly like a schoolgirl every time i think about it


just dont screw around with your tune or kiss the motor in the car now goodbye...another point is was trying to bring out is that you have like no down time the way i was saying and other are saying.which is always good for a DD.
as far as the tranny look in the boosted lists and see what others are running and follow suit tailored to you needs.
So hurry up and get yours running.
Old 10-10-2005, 06:28 PM
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Hmm yea.... well i would really like to have a big ol rumpy engien with huge ehads and a cam and sick n/a power but if i go that route than i cant turbocharge it or anything and that will get to me. Im sure 500-550 would be mroe than enough for the street and im sure if i get a low comp motor and turbocharge it ill kill myself. I mean exactly how safe is anything only 750 hp o nthe street? What will i need to get ANY sort of traction? haha man.... Is there any comprimise here, like a decently low comp motor where i can have about 475 NA and still turbocharge it later or what? Also what head/cam choice do you guys suggest for me NA for both..... if i were going to turbo later.... what comp ratio, heads/cam would you suggest? And if i were jsut shooting for a big NA numbers, what comp ratio/heads/cam would you suggest? Im gunna PM HPE and Futral now and get some sort of prices going. Thanks men. Maybe ill make a post..... to build 408 for street..... build it for turbo later or made NA now and forever
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Old 10-10-2005, 07:41 PM
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Well i jsut sent detailed e-mails to HPE and Futral so we'll see what type of 408 they recommend i build and the prices.
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Old 10-11-2005, 09:57 AM
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Nice, yea I mean again its all in what type of car your looking to build. Just out of curiosity have you ever been in a 500+ rwhp car? Before my buddy blew his engine he was running his stock 346 block with a 231/237 cam and a 150 NX wet shot, which put down 500+ rwhp and 500+ rwtq and that thing was a monster! It pulled like a bat out of hell, and traction on the street was pretty much non-existant since he didnt have the proper suspension/traction mods, such as some nice sticky tires, a 12-bolt, etc...He went for the power first, then blew his engine, and now he is rebuilding it with a forged 402, moser 12-bolt with 35 spline axles, and it looks like a th400 (if he can afford it). This is why im starting with a cam first, see how I like it, then im gonna go from there. If you look around the forum there are plenty of heads/cam and even cam only cars dipping into the 11's in the 1/4, which is friggen fast! If you havent been in a car with that much horsepower before Id say stop by Exotic Performance Plus and see if Bob or one of the other guys can give you a ride in one of their modded cars and let you decide how much power you really need.



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