Vega Racer

Guys looking for a littel input on this build. It's at the shop waiting it turn, Looking for aroung 775 at the crank.


LS3 block 4.075 bore.
Texas Speed 4340 Crank 4" stroke
Texas Speed H Beam Rods 6.125" w/arp 2000 bolts
Wiseco 4.075 piston + 11.8 cc.
ARP main studs
ARP head studs
Billet barbell
Improved crank scraper & windage tray.
Moroso # 21149
Melling High Volume Pump
Melling premium double roller
BTR Spec solid roller cam on a Cam Motion 8620 core. 260 272
Morel solid roller lifters #5425
TEA TFS 255 heads 64 cc. W / Manley hollow stem intakes valve.
Crower shaft roller rocker 1.7
Push rods Smith brothers
CID Intake W/ 4500 flange
Holley 1050 cfm Domanator

Afolly

Your build looks impressive and well-thought-out, targeting around 775 horsepower at the crank. Here’s my considerations and observations based on your components:

Comprehension Ratio
Camshaft
Heads

gnx7

iTrader: (28)

Afolly is most likely a bot.

Run as much compression as you can for the fuel you plan to use. 416ci will need everything you have to make 775hp flywheel... including some very nice headers (stepped with real collectors) etc. You probably want to set your sights a little lower unless this was 14:1 with a really nasty cam.

Do you know what the heads flow CFM wise?

G Atsma

After checking Afolly's profile, I agree he looks like a BOT

Vega Racer

C/R will be around 14.5 to 1 Cam is 260 272 with 745 lift on both sides 111+3
Heads flow @ .700 In. 373 Ex. 254 and still flowing
Slip On, 2.00 in. Primary, 3.50 in. Collector,
Fuel Q16 Race engine only.

Fishmasterdan

Thought I would chime in maybe to help out a little. I am 4.155 bore LS7 based 15-1 on alchol. Makes 650 to the tire. So close to what you are looking for . I would suggest your cam is on the small side. You need something north of 800 lift I am 846, you are close on durations. My heads are said to flow 390 at 800 CFM if that matters.

helicoil

iTrader: (104)

I would lose the HV pump and F-Body pan combo.
Minimum 4.5 CID, and it will need ported to match heads and intended RPM range.
RPM is your friend, this combo will need to make power to 7600 MIN. Its doable, but things need to be right. Steel valves aren't going to help.
What ring pack?

Vega Racer

My heads will not flow those numbers of yours. Maybe off seson next year !! Thanks for chiming in !!

Vega Racer

Tell me why I should get another pan?

02EBC5Z06

iTrader: (1)

You are going to run into cavitation issues more than likely. I know a lot of guys run into issues once they hit the 1.3X 60ft mark on them.

Look at a better aftermarket pan like the moroso.

65LSXNOVA

because the pick up is in the middle of the pan. The f body pan is a ok design for a street rod/cruiser or 12 sec car. Once I started cutting 1.4 60fts it became a serious issue. I went with a china 302-1 knock off as it has the pickup tube 3" further back in the pan.

Vega Racer

Thanks everyone for the info on the oil pan.
I ordered the Moroso # 21149 today.