WANT SOME IDEAS ON MOTOR SETUPS

82CapriRS · Apr 1, 2008

i recently have decided that im gonna be building a motor for my 90 lx. at first i thought it would be fairly easy but theres soo much new stuff out an so many different setups that can be done. what i need help on is this, i know im using a new boss block so it will have to be finished at a machine shop before any thing further. but goin from that what would you guys do? like i said its goin in my 90 lx which i drive on the street an 10.5:1 is probably the highest i can go on compression an being able to spray. should i go331? 347? what kind of heads? it must be a roller cam but what one?

any of you guys have a setup up similar? any videos of your car with that setup?
all i know is i would really like as close as i can get to 450rwhp as possible, but with the lower compression i know its nearly impossible. please help me out and thanks

oh, as for trans an clutch. tko600/ spec stage 2plus is what i had in mind. but speak your mind an thanks alot! :SNSign:

88mouse · Apr 1, 2008

Is the car going to be more of a weekend car or a DD?

85_SS_302_Coupe · Apr 1, 2008

High compression, custom cam, Twisted Wedge heads/matching intake, enough strength to run 7000rpm.

My buddy's stock-block 347 is all Eagle internals with forged pistons, custom cam, Systemax intake and all the necessary intake stuff to go with it, Edelbrock Victor Jr heads with 2.05/1.60 valves, a T56 and 3.73s. It just came out of the garage for the first time about a month ago and still needs tuned but it's already nasty as hell on the street.

BlownFiveLiter · Apr 1, 2008

Ok guys, 3 posts have been removed. When it's a serious topic, can you make an effort to keep it on topic? Mmmkay, thanks.

90five0oh · Apr 1, 2008

im goin with a CHP 331 shortblock with the trickflow h/c/i. compression should be right around 10.5:1 which is about all you want for the street. i wont be anywhere near your power expectations, probly around 350 to the wheels with a good tune. but its gonna be nasty on the street i promise

82CapriRS · Apr 2, 2008

sorry about the wait. the car will be more of a weekend car but i would like it to be able to be a dd if need be for a short period of time. thanks guys an keep em comin

82CapriRS · Apr 4, 2008

Bullitt347 · Apr 4, 2008

With the Boss block you can easily go with a 347 combo, BUT, do it with the 331 stroke crank and get the extra 16 cubes by going larger bore. This has 2 positive effects. First you do not get the side loading on the piston skirts and cylinder walls with the typical stroke of 3.4" for a 347. Second, by going with the big bore, you un-shroud the valves from the cylinder walls. This leads to better air flow and cylinder filling from the heads, plus you have the extra cubes.

82CapriRS · Apr 5, 2008

thanks alot bullit! i really appreciate it alot! i was thinkin that setup with CHI cleveland heads which come in at 2.05 intake 1.65 exhaust with a cam like the anderson motorsport b451 i believe it is. its around 570 lift both intake an exhaust side with 1.6 roller rockers. doing a little research i found out that edelbrock now makes an intake to do that an essentially build a boss 302. its claimed to be good from 1500-6500rpms and is called the E BOSS. could i make the power i would like or close to it with that kinda setup? would it be better to go AFR185s? any ideas anyone? you guys rock thanks an keep the ideas comin!

just4bob50 · Apr 5, 2008

If you are going to NA you could still go with the 347 crank and rods with a 4.125 bore and end up at 363. Your questions are the same ones I had a year ago. Do your self a favor and get with a professional. I went with ( Rick_91GT ) www.RNHPerformance.com for my engine. He probrably spent 3 hours with me over several phone calls to answer all my questions, and this was just covering the merits of different builds. If I was going to stay NA, I would have went with a 363, but I knew I wanted boost again down the road, so we went with what is in my sig. Good luck

blckstng96 · Apr 5, 2008

pour gasoline all over the stock motor and throw a match at it,that **** would be HOOOOTTTT

82CapriRS · Apr 5, 2008

thanks bob ill deff give them a call. thought about 363 but i dont think i would wanna being that i want to make sure the block will last knowing its gonna cost me about 2500 bucks after machining. its just a matter of choosing a big bore 347 with 331 crank like stated uo there ^ or actual 347. either way thanks for the advise. blkstang i would throw a mtach on it if it was a 4.6 lol. keep em comin guys!

just4bob50 · Apr 6, 2008

If your set on a boss block, cool, but I have seen the Dart 8.2 deck blocks go to 382 cu in i think. Im not positive but I think the numbers are some thing like 3.55 crank, maybe the 5.4 rod still, and a 4.155 bore. There are a couple of builders on various sites developing stroker kits for stock & aftermarket blocks that go well past 347. Im sure if you talk to Rick he fix you up.

82CapriRS · Apr 6, 2008

i was set on the boss for it being 4 bolt main on the center 3 main caps an screw in freeze plugs. you can go up to 363. ive heard good things abiut dart but the man of war block i though was the only block that they make with 4bolt mains...it having all 5 mains with 4bolts. but its another grand on top of the price of the boss. they make the sportsman too but isnt that only a two bolt main? i need something strong to handle a healthy shot of spray or good boost. not sure on what one just yet. thanks again.

TweekedGT · Apr 6, 2008

Drop a 351 in and be done. Will eat a 5.0 or 347 and have room to grow.

just4bob50 · Apr 7, 2008

82CapriRS said:
i was set on the boss for it being 4 bolt main on the center 3 main caps an screw in freeze plugs. you can go up to 363. ive heard good things abiut dart but the man of war block i though was the only block that they make with 4bolt mains...it having all 5 mains with 4bolts. but its another grand on top of the price of the boss. they make the sportsman too but isnt that only a two bolt main? i need something strong to handle a healthy shot of spray or good boost. not sure on what one just yet. thanks again.

Dart sportsman has 4 bolt mains except for end cap. Rated for 1200-1500 hp. Ill try and find a pic of the bottom of the block to post for ya.

blckstng96 · Apr 7, 2008

boss block is overkill for 450hp regardless of spray or not.

5spd GT · Apr 7, 2008

TweekedGT said:
Drop a 351 in and be done. Will eat a 5.0 or 347 and have room to grow.

A 347 will be quicker than a 351, assuming the same topend pieces.

A BOSS block is not overkill, if you are looking for 100% reliability.

Really, I would get a DART over a BOSS.

Longer skirts and thicker block.

1991vert · Apr 7, 2008

i went with a 363 and a blower

MAC'n89Blckstng · Apr 7, 2008

82CapriRS said:
i was set on the boss for it being 4 bolt main on the center 3 main caps an screw in freeze plugs.

oooooooooooooooo screw in freeze plugs!!!!!!!

WANT SOME IDEAS ON MOTOR SETUPS

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