ramair92rs

well this afternon i fired it up for the first time, gotta say im looking forward to a test drive. still tryin to figure out what gears to go with 3.73's or 4.11's, but i was hoping you guys could throw some guesses at me for what kind of numbers i'll be making and maybe some 1/4 mile times. i've got aluminum LT1 heads with a zz4 cam a gmpp lt1/lt4 intake with a holley 600DP on top, any input would be appreciated

Orr89RocZ

iTrader: (20)

i think it will pull to 5500rpms easily and make some nice power. that cam and worse L98 heads on a ZZ4 is said to make 355hp. you should definately be around 320 with those slightly better heads even tho u lost some compression..but just alittle bit.

and i'd stick with 3.73's with that 700r4

and how hard was the conversion to LT1 heads? how are u running the water passages in the heads? any accessories on the motor still?

ramair92rs

converting the lt1 heads wasnt as bad as thought it may be just had to get the extra coolant holes welded up, as for the coolant i had 3/4 inch holes drilled and tapped on the front of the heads, it takes some grinding on the alternator bracket to get clearance for the coolant line but all in all its not to hard. only accessories i have are water pump and alternator.

shouldnt my compression be higher the lt1 heads are something like 53 cc and my stock l03 heads had 58 and i had to have the lt1's milled alittle

Orr89RocZ

iTrader: (20)

i thought stock lt1's were 62 cc? i'm not sure.

Zepher

iTrader: (1)

58cc for LT1 and 54cc for LT4 heads.

ramair92rs

so are there any other guesses for what kind of numbers i can expect from this combo?

1320_Guy

iTrader: (3)

Have any pics of the install?

ramair92rs

i'll post some this weekend.....and if i can figure out how i'll put a vid of it so you can hear it running

1320_Guy

iTrader: (3)

You can host vids on Photobucket.

ramair92rs

quality, but gives the general idea....check em out let me know what you think

http://s158.photobucket.com/albums/t...&current=Video
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http://s158.photobucket.com/albums/t...Video-0045.flv

ramair92rs

http://i158.photobucket.com/albums/t...92rs/heads.jpg

http://i158.photobucket.com/albums/t...2rs/heads2.jpg

http://i158.photobucket.com/albums/t...rs/engine2.jpg
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this one doesnt really have to do with my current setup, was a summer or 2 ago but this is what it used to sound like

http://s158.photobucket.com/albums/t...=chrisscar.flv

kronos

Hey ramair92rs I'm getting ready to do this to my lo3, and I was wondering how you were able to go around using an ac delete pulley? what did you do about the tensioner?

KWIK84

iTrader: (5)

Quick rough guess, depending on the weight of the car 14.2 to 13.5. Good luck and let us know what she does on the track!

Z.ROC28

Thank god I finally found someone that has done this conversion. I was planning to do this with a 350 block I have and destroke it to a 327 to somewhat get the classic 'RS' feel to it.

ramair92rs

dont know why but it didnt send me emails on replies, anyways to answer the question about the ac pulley i got around it because i dont have AC and i have no tensioner either i made my alternator bracket adjustable with the help of some carbite bits...so far no track times im still having some tuning issues, i cant give it full throttle from a stop, it'll hesitates, sometimes stalls but from a roll runs like a raped ape at full throttle...and im thinkin 4.11's might be alittle much think im gonna go to 3.73's