Quick99TransAm

iTrader: (15)

Ok right now i have 2.5 5.3 heads on a lq4.My questions is it worth it to swap to L92 heads.I think the l92s will give me room to go but what do you guys think?

firebird99

iTrader: (2)

The guy i just bought my shortblock from has a set half ported with springs tit ret. valves everything plus intake with rails injectors,tb for sale if your interested all brand new with reciepts let me know ill get you his number

Sales2@Texas-speed

iTrader: (5)

The only issue with putting the L92's on an LQ4 short-block is the compression drop. You're going back down to about 9.5:1 static compression or so (before milling and thin gaskets of course). What camshaft are you running?

Quick99TransAm

iTrader: (15)

I have a stock cam for now but was thinking about the 228r.But i have herd that l92"s like split duration cams.

Sales2@Texas-speed

iTrader: (5)

With that compression, and depending on which bolt-ons you have exactly, I'd consider our Texas Speed 225/230 LS3 cam or similar!

mike c.

iTrader: (1)

save the money and buy a set of trick flow heads. You will gain more and have a better product.

Quick99TransAm

iTrader: (15)

Car has full intake and full exhaust.Matt how would i use that cam in my set up would i have to swap to an ls2 front timing cover so that the cam postion sensor will work

SweetS10V8

iTrader: (4)

Im pretty sure that LS3 aftermarket cams still have the rear cam sensor pickup on the camshaft.

tspence45

iTrader: (30)

All you have to do is tell them what application the cam is for, and they'll set you up with what you need. Because I have their 231/236 cam for an LS3/L92 in my LQ4. They'll just have it ground on a Gen III 3 camshaft, instead of a Gen IV.

Sales2@Texas-speed

iTrader: (5)

When you order, we just indicate it is a 3 bolt cam core and everything, including the stock location cam position sensor, will work perfectly!

Quick99TransAm

iTrader: (15)

What do you think about this cam for my set up 240-246-.600-.600-114

thedak

iTrader: (1)

Way Too Big

402GOAT

iTrader: (2)

id be looking at a custom grind. l92's flow well enough that it takes a short duration cam to make most power.

WKMCD

iTrader: (2)

I don't like a single one of those numbers for the L92 heads.

Quick99TransAm

iTrader: (15)

What do you guys think is it worth the swap or stick with the 2.5 5.3 heads

Fourman

mine is 234/242 .598/.593 114 and i made 523WHP and 468WTQ peak with >400lb/ft from 2800-6700rpm. i think the last 3 numbers are fine... with 39 more cubes anyway.

dont overlook what Matt said above about compression... personally i think youd be putting a lot of money in while getting very little out. in addition to the heads, you will need a new intake manifold so get ready to do the 'full intake' again. The heads will flow a ton but with the killed compression i think you may come out even on power and possibly down on torque with those huge gaping intake ports killing velocity.

Quick99TransAm

iTrader: (15)

was planning on milling the heads and running thin head gaskets even if i got compression to 10 to 1 would it be worth it.

Fourman

LQ4 pistons have a dish, right?

watch getting a big cam anyway... my cam did not have enough clearance with my LS2 bottom end unless my L92s were unmilled and using a GM .052 gasket

good luck

Quick99TransAm

iTrader: (15)

Correct Fourman LQ4's have a -8cc dished piston

1SLwLS1

iTrader: (6)

They may be a dish, but they don't have valve reliefs so as stated, check your PTV again.