XtraCajunSS

iTrader: (2)

There is nothing in this combo keeping it from 500RWHP except possibly the cam. I know a lot of the members on this board haven't been around long enough to remember when the first 408's and such were making 500+ through stock ported 853 castings, an LS6 intake, stock ported TB, 1 3/4" headers, and a hooker catback. I know this is fairly easily done since we and a few other shops from way back did it repeatedly.

You don't NEED high dollar cylinder heads, FAST intakes, massive headers, etc... to get the job done. Any of the above makes it MUCH easier but a well thought out combination of modified stock hardware and the right cam will do the trick. I would find out the exact specs of your combo and have a custom cam ground. With the proper information I could help you reach your goal.

Thanks,
Shane

SpinsB

iTrader: (5)

Pm sent

SpinsB

iTrader: (5)

speaking of MTI I know alot goes into compression ratio's of motors but what would be a good guess of the compression ratio of my motor? Or how would I find that out?

mike c.

iTrader: (1)

Take it to the track.. I have been on 5 different dyno's and some of them were 60hp difference. I really go by the weight of the car vs my mph. I'm a believer in the high dollor heads for a reason. You get what you payfor...period.

mike c.

iTrader: (1)

I don't like your heads for power and could get a better cam. Buy some AFR heads from mammo or TRICKFLOW 235 heads from tea. i'll bet you gain 30-40hp like i did over stock ported ls1 heads. forget the ported l92 ****. it makes great peak numbers,but does not perform like the trickflow heads. I know i had them on my 402ci and gained 20hp 15tq going to the trickflow.
WHISTLER-shops can inflate dyno numbers to sell ****. but when you put it all on your car and go to a different dyno it is not close. I have seen this before. I got 540hp on a mustang dyno with a 402ci with trickflow heads.my cam is a 247/255 632/632 111lob.

blackonblacksls

iTrader: (1)

Guys have made 540+ with stock shortblocks and ls3 heads with cams 10 degrees smaller than the guy in the post above me... ls3 stuff would be my choice if I was you.

mike c.

iTrader: (1)

BLACKONBLACK-Well,i had the ls3 stuff and went to trick flow...DID YOU? I seen the difference on my own set up. the peak numbers were the same but under the curve was a 20hp and 15tq jump and the 1/4 times and mph jumped too. Also my friend,i have had this set up on two different dynos and one dyno was way higher then the other since you wish to only bring up numbers. so,should i hit a dynojet and get a 600hp(because one dyno was 60hp higher)number and say that is what i make....rather keep it real. after 5 dynos and NONE were the same,people still like to talk numbers..lol How mayn motors with different combos have YOU had? I have ran cnc ls1 heads,cnc ls3 heads,AFR heads and trickflow heads on thee different combos. nine different cams,different exhause set ups ect. WHAT CAN YOU TELL ME BRO???

SpinsB

iTrader: (5)

still working things out with what i have now. Waiting on some sponsores to get back to me but I did get a sweet deal on a fast 102 so even tho some say I can get to my goal with what I currently have i had to jump on this 102
I will be sticking with a cathedral port head just not sure what route i will go. Any suggestions on a 102 TB (fast, nw, anyothers?) pros cons

SHovV

iTrader: (1)

did you ever get your oil problems figured out?

SpinsB

iTrader: (5)

Not completely but better. I was getting oil down n the valves thru the rocker arm bolts(they didn't have thread seal on them) but I am still burning oil. Im gonna do a leak down test to see if maybe the rings r bad??

Slowhawk

iTrader: (12)

I think the down low torque curve looks great. The whole top is just restrictions.

fatmat80

before IK bought the FAST I would have done a leak down test. Its almost a given the top end is crap. Doing that would have ruled out your whole combo as crap or a keeper. If the bottom end is good, look at getting a head and cam combo to meet ur needs. If you are on a budget give tsp a call their heads and cam packages are priced great and perform.

Johnnystock

iTrader: (6)

Its all about budget/money anyway and the combination of parts, of course. I wish we could all afford AFR ported by mamo, but its far from the reality. So dollar for dollar LS3 stuff is very impressive.