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Search: Posts Made By: james.frazita
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Forum: C3 Tech/Performance
11-17-2014, 09:15 PM
Replies: 52
Views: 7,489
Posted By james.frazita

I have been looking for over a year to upgrade my...

I have been looking for over a year to upgrade my Muncie 4 speed transmission with a 5 speed in my 1968 427, 435, 4"11 Corvette. After much reviewing, calculating and sole searching, I placed my...
Forum: C3 Tech/Performance
03-28-2008, 08:29 PM
Replies: 22
Views: 1,834
Posted By james.frazita

Paint New Alumium Heads or Not??

I just received a sent of Edelbrock alumium BB heads. Anything special to keep them looking good? Will clearcoat yellow? Paint them Chevy Orabnge to match the block. I drive the car often. Any...
Forum: C3 Tech/Performance
03-15-2008, 10:15 PM
Replies: 142
Views: 8,368
Posted By james.frazita

Big Block

I am going to SCCA Autocross my 1968 390HP Big Block convertible Vette this year for the first time. Anyone have a suggestion for suspension springs and sway bars? This is a 4 speed car with 4:11...
Forum: C3 Tech/Performance
02-09-2008, 09:22 PM
Replies: 8
Views: 857
Posted By james.frazita

Valve Guides Leak

Has anyone ever tried JB Weld or other products to seal valve guides on 427 heads? Machine shop has tried three time to fix but the new exhaust guides leak water into the exhaust chamber.

Jim
Forum: C3 Tech/Performance
02-08-2008, 10:22 PM
Replies: 0
Views: 537
Posted By james.frazita

60499 Edelbrock Heads

Does anyone have experience with the Elelbrock's new #60499 heads with their 427? I am using TRW2300F pistons.

Jim
Forum: C3 Tech/Performance
10-17-2007, 07:27 PM
Replies: 16
Views: 588
Posted By james.frazita

Good Stuff

Thanks, I will compare the RPM to MPH calculation on both the 3:55, 3:70 and 4:11. I run about 3000 RPM now at 55 MPH. Rear tires are 27.3 inches tall (BF Goodrich T/A's).
Forum: C3 Tech/Performance
10-16-2007, 07:45 PM
Replies: 16
Views: 588
Posted By james.frazita

Gearing?

I have a 1968 - 427cu in, M21 close ratio trans with 4:11 rearend. The car was an original 435 HP but is now a 390 HP with a crane cam. The 4:11 gears are great for local street driving and drag...
Forum: C3 Tech/Performance
07-30-2007, 04:21 PM
Replies: 4
Views: 795
Posted By james.frazita

Reply

Not sure if I need to install original valve size. I use TRW 2300 pistons with cutouts for valve clearance. I will clay them in this winter to see how much valve to piston clearance I actually have....
Forum: C3 Tech/Performance
07-30-2007, 03:50 PM
Replies: 4
Views: 795
Posted By james.frazita

Smaller Valves

Is it possible to down size 2.25 intake valves back to 2.15? They are on a set of 3919840 BB heads, 427, 435 HP. The heads are basiclly stock and have never had hardened valves installed. THOUGHTS!!!
Forum: C3 Tech/Performance
07-19-2007, 11:30 PM
Replies: 200
Views: 123,878
Posted By james.frazita

Thanks!

I will move it tomorrow to the open port. THANKS for the input!

Jim
Forum: C3 Tech/Performance
07-18-2007, 09:54 PM
Replies: 9
Views: 892
Posted By james.frazita

The gas cap allows air into the tank but not out....

The gas cap allows air into the tank but not out. Like a check valve.
Forum: C3 Tech/Performance
07-18-2007, 09:29 PM
Replies: 9
Views: 892
Posted By james.frazita

No Canister

In 1968, there was no canister to relieve vapers and there is no return line as the car was originally a tri-power.
Forum: C3 Tech/Performance
07-18-2007, 07:12 PM
Replies: 9
Views: 892
Posted By james.frazita

Gas Tank Pressure

When I go to fill up my gas tank on a hot day after driving around in my 1968 427 Vette, I get a large gush of hot air out of the tank. It has built up a lot of pressure from the temperature increase...
Forum: C3 Tech/Performance
07-17-2007, 10:18 PM
Replies: 200
Views: 123,878
Posted By james.frazita

427 Avs

Barry, so it sounds like I should move my vacuum advance from the timed port to the open port areas on my Edelbrock AVS carb. It is on a 68 Corvette. This will improve idle and performance?
Forum: C3 Tech/Performance
06-12-2007, 04:08 PM
Replies: 5
Views: 409
Posted By james.frazita

Response

Yes, I am using ARP bolts and white sealer.
Forum: C3 Tech/Performance
06-11-2007, 11:42 PM
Replies: 5
Views: 409
Posted By james.frazita

Leaking oil BB intake

OK, I have seen some of the threads on fixing oil leaking intake gaskets. On my 1968, 427 GM aluminum intake to an Iron oval port head I am using Fel-Pro 1212. Should I put some (small amount) high...
Forum: C3 Tech/Performance
03-26-2007, 09:39 PM
Replies: 21
Views: 4,085
Posted By james.frazita

Good News

The machine shop gave me no problems with this issue and asked me to bring it in as soon as possible and they will make it right!

THANKS for all you input!
Forum: C3 Tech/Performance
03-25-2007, 09:16 PM
Replies: 21
Views: 4,085
Posted By james.frazita

Thanks

THANKS! I'll let you know what happens tomorrow!
Forum: C3 Tech/Performance
03-25-2007, 11:25 AM
Replies: 21
Views: 4,085
Posted By james.frazita

Found the problem!!

With the exhaust manifold off and the intake on, coolant was dripping from the outside of the valve guide! Easy to see! It apprears that from all the things I can find that only the exhaust goes...
Forum: C3 Tech/Performance
03-25-2007, 09:02 AM
Replies: 21
Views: 4,085
Posted By james.frazita

Will check

I am planning on taking off both intake and exhaust manifold then pressure test the coolant system to see what is happening. Early investigation it does not apear to be leaking into the cylindes but...
Forum: C3 Tech/Performance
03-24-2007, 11:44 PM
Replies: 21
Views: 4,085
Posted By james.frazita

Inside

Inside! I will look at it again tomorrow and refill the radiator and hopefully, I will be able to see it leaking.
Forum: C3 Tech/Performance
03-24-2007, 11:28 PM
Replies: 21
Views: 4,085
Posted By james.frazita

No

No, I have the exhaust manifold off and it is wet inside the head casting.
Forum: C3 Tech/Performance
03-24-2007, 11:22 PM
Replies: 21
Views: 4,085
Posted By james.frazita

White Smoke

Oh no, it is clearly coolant. I started it up to break in the cam and there as alot of white smoke from both banks. I just removed the exhaust manifold and it is wet inside the casting on two of the...
Forum: C3 Tech/Performance
03-24-2007, 11:04 PM
Replies: 21
Views: 4,085
Posted By james.frazita

Water leaking from exhaust manifold!

HELP! Just finished freshening up my 427, 390 HP enngine. As part of the process, all the valve guides were replaced with stock cast iron and the heads were rebuilt. After putting it all back in the...
Forum: C3 Tech/Performance
02-03-2007, 07:52 PM
Replies: 5
Views: 644
Posted By james.frazita

Thank!

I am impressed! You saved the day!
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