BLKWS6

(yes i did use the search button )

But being new to the FI....looking for a few suggestions for a cam. Motor will be a stock 346ci w/6.0L heads (stockfor now...till i can get them ported). Right now i have stg 1.5 5.3L TEA (unmilled) heads and a FMS11 cam (228/230 112+4)

Looking to make close to (or over) 500hp with a T67-70 (rear mount) but would like something that still has some lope to it. Or is that possible?

(also about to be in the process of building a forged 370ci)

what can you guys suggest?

MIGHTYMOUSE

iTrader: (59)

dont think there has been extensive work done to see what camshafts help out the rear mount the best.. it could swing either way.. i suggest staying with what you have and saving the cash for something more imperative... or even putting the stock cam back in... you can certainly get 500horse with either.

BLKWS6

Yeah...i was thinking about swapping back to the stock cam. Would it be possible to keep the 5.3's ? Or would the CR be too high for FI? (about 10.7-8:1 now)

JZ 97 SS 1500

iTrader: (2)

That compression is awfully high. As for cam, for a rear mount, I would run a dual pattern . Since the turbo is so far back and alot of exhaust efficiency is lost you can run a larger duration cam.

Jose

BLKWS6

If i could run the larger duration...could i still run the 228/230 cam i have now? or would the lsa be a problem? (112+4)

Or would i be better off going with something like a 226/226 114 or 115? (of course i would switch to the 6.0L heads too)

JZ 97 SS 1500

iTrader: (2)

I would run the dual pattern setup. With the 228/230 your going to have some overlap. Even though the turbo is so far back, the backpressure is still there. The dual pattern cam would be a better match and help keep from any possible reversion at higher boost levels. Also since the rear setup suffers from lag you also run a smaller A/R, which just adds to backpressure problems at high boost.

Jose

smokinHawk

iTrader: (48)

i would sell your heads and cam and buy some 6.0 heads, maybe ported if you can afford them. id try putting th stock cam back in or get one with an lsa of 115 or higher and a duration in the 22x range. no real sense in going to big of cam on stock cubes.

BLKWS6

Well i have been looking at going with a GT67 or 70 with something like a .80+ A/R...would that cut down on the backpressure problems?

JZ 97 SS 1500

iTrader: (2)

The larger the A/R you can run the better.


Jose

BLKWS6

Ok...cool.

smokinHawk

iTrader: (48)

id run a .96 a/r if your shooting for 500rwhp

BLKWS6

cool...Could a regular intercooler be used instead of the meth injection for say. the STS type kit? or is meth required to run higher boost than the 5psi base?

JZ 97 SS 1500

iTrader: (2)

You could run a regular IC with the STS kit, but it would be a tubing nightmare. But it can be done if you have enough patience.

Jose

BLKWS6

Cool....if i do go that route i would rather use that than have to use the meth. Thanks for all the info guys!!!

JZ 97 SS 1500

iTrader: (2)

If you need a custom IC built let me know.

Jose

BLKWS6

Thanks....will do