LT1 ported head pics
Thread Starter
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
LT1 ported head pics
Here are some pics from the guy that is building my engine and also ported the heads. Average flow is 260 intake, 170 exhaust (258-263 was the spread on the intake, I forget the exhaust spread). These are going on top of a 383 and Comp's 280XFI cam. Should make nearly 500hp at the crank. He still has to install the new rocker studs in these, springs are Comp 918 beehives that came with the 280XFI cam kit. Valves are Ferrea 6000 series, 2.00"/1.56".
It's been nearly a year since I've driven the Vette, I am sure it will be a completely new experience!
It's been nearly a year since I've driven the Vette, I am sure it will be a completely new experience!
Team Owner
Joined: Nov 1999
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
I've got stock ported heads and they work real good. Yours should make plenty of power. 
Large Impressive Member
Joined: Jul 2003
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Nice. What lift were those numbers taken at and what are the rest of the details on your build?
Thread Starter
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Unfortunately I do not have the flowsheet yet, but I recall those numbers were at 0.600.
The rest of the engine is built with a Scat 9000 3.75" crank converted to LT1 balance (wish I would have gone forged), Scat 4340 I beams, SRP pistons w/ floating pins, plasma moly rings and then of course the Comp 280XFI cam kit which includes the 1.6:1 pro mags, 918 beehive springs, hardened pushrods, guideplates and standard lifters. The block had all the machine work done to it to make everything round/straight/parallel along with oil passage modifications to improve oiling. ARP hardware is holding everything together.
The rest of the engine is built with a Scat 9000 3.75" crank converted to LT1 balance (wish I would have gone forged), Scat 4340 I beams, SRP pistons w/ floating pins, plasma moly rings and then of course the Comp 280XFI cam kit which includes the 1.6:1 pro mags, 918 beehive springs, hardened pushrods, guideplates and standard lifters. The block had all the machine work done to it to make everything round/straight/parallel along with oil passage modifications to improve oiling. ARP hardware is holding everything together.
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Thread Starter
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Originally Posted by STL94LT1
Is the spark plug hole threads damaged in this picture?
Actually I cross-threaded that about 5 years ago when I did my first plug change (#8). Oops. It never caused problems so I didn't deal with it. A tap was ran through the threads to clean them up when they were ported and it should be fine now. Since you noticed it, I'll bring a spark plug with me next time I am at the shop to make sure it goes in clean and straight. 
Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
Originally Posted by rickreeves1
What package did you go with? I havn't decided yet.
Thanks
Thanks
LE2 heads with a custom cam for road racing. He is also porting my stock intake. The LE3 intake valves will hit the stock pistons. I called and talked to Lloyd and this is what he said and suggested.
Its going to cost me just under $2000 for assembled heads, cam, and intake.
Thread Starter
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Originally Posted by cuisinartvette
Who ported those?
Thread Starter
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Originally Posted by Zix
What compression do you plan on running?
