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Afr 210s
LT4 Intake port matched to heads and for a 58mm Throttle Body
Crane Gold 1.6 Rockers
Beautiful.
Originally Posted by cv67
Guessing my the #s those arent the comp port? Looks like he did a basic cleanup on them...(but why are the valves still caked up)With a good head and FI you dont need a bunch of cam
I like the smaller of the 2 , that will work perfectly with the gear you have now and allow you to stay in the torque band longer....youll love it.
If you cammed it up and geared to suit you would have to (still might wana consider it) run M/T full time so you dont wrap it around a pole. On the strip it would be awesome not so sure if its worth it just as a street car
Is all this stuff smog legal just curious
Love sleepers..failed at my attempt on the Camino, wheels and exhaust note give it away
On this 88 I just picked up down the road would like to build something with brute torque...stock wheels, stock mufflers so its truly quiet etc. 3.45 gear so it can maybe dip in the 12s. ..not super fast but fun enough.
Noone expects an early C4 to do much past 0-30mph
Yea I get that... The kid in his 2010 SS didn't expect me to blow by him on the on ramp either.... he did catch up once it was all the way to the floor but as he rolled past he had that look of "whats going on under that hood" and confusion... its pretty fun. Unless people hear it (its quiet until I nail it really) they just think it's an 84 lol. I've driven more powerful vehicles but this is just right. Good balance and just sketch enough to be fun but no too much power where it is unmanageable on the street.
Guessing my the #s those arent the comp port? Looks like he did a basic cleanup on them...(but why are the valves still caked up)With a good head and FI you dont need a bunch of cam
I like the smaller of the 2 , that will work perfectly with the gear you have now and allow you to stay in the torque band longer....youll love it.
If you cammed it up and geared to suit you would have to (still might wana consider it) run M/T full time so you dont wrap it around a pole. On the strip it would be awesome not so sure if its worth it just as a street car
Is all this stuff smog legal just curious
These were purchased used off a running car. I am sure the port work was done before they were installed. They may not be the best heads, but for the price I paid they are more than enough to get me to my goal. I am going to clean them off in the tank at work and get the seat pressure checked, installed height, etc before I use them.
Smog... what is that? I left CA 5 years ago and won't go back. Nice place to visit, but way way way to much government and taxes to live there.
Brake components have been ordered as well.
DRM Bias spring, Carbotech Street Pads, StopTech Slotted Rotors, Gooridge Stainless Lines, Black Brush on Caliper Paint, Red Caliper Paint. Will be a very nice street upgrade.
I placed my order for my 58mm Throttle Body. Decided to go with AS&M, and went ahead and placed an order for a set of their runners for my L98 while I was at it.
Nothing wrong with AFRs they are great heads youll like them.
Off a running car explains that I suppose I was ignorant..for a sec I thought "who ported them without cleaning? lol
Carry on!
As long as the intake is off the engine, I'd suggest coating the inside with epoxy. It insulates the air from the hot aluminum, sort of like putting a plastic intake on your car.
Actually, after the header thread, I'd suggest looking into the GMPP dual plane LT1 manifold. It's based on the Edelbrock Performer RPM and is supposed to be good for 30 ft/lbs of torque over the stock LT1 manifold.
As long as the intake is off the engine, I'd suggest coating the inside with epoxy. It insulates the air from the hot aluminum, sort of like putting a plastic intake on your car.
The only real issue with the epoxy is the benefit is more pronounced on strip cars where you make a pass and then cool off.
Thermal conductivity is lower but in the same breath, once it reaches temp it takes longer to cool down because it is insulated. And I know it'll take longer to reach that because of heat flux and resistance models etc. Its been a while since I've tried insulating because I've mostly been working woth heat exchangers but... I suppose there is merit but to what degree for a mostly street car. I assume in the ports since that is the actual.air stream you are trying to insulate?
The only real issue with the epoxy is the benefit is more pronounced on strip cars where you make a pass and then cool off.
Thermal conductivity is lower but in the same breath, once it reaches temp it takes longer to cool down because it is insulated. And I know it'll take longer to reach that because of heat flux and resistance models etc. Its been a while since I've tried insulating because I've mostly been working woth heat exchangers but... I suppose there is merit but to what degree for a mostly street car. I assume in the ports since that is the actual.air stream you are trying to insulate?
I'm not talking about coating the outside, I'm talking about coating the inside. I picked up the trick when reading an article on NASCAR cheats.
Actually, after the header thread, I'd suggest looking into the GMPP dual plane LT1 manifold. It's based on the Edelbrock Performer RPM and is supposed to be good for 30 ft/lbs of torque over the stock LT1 manifold.
It will, but it does require modification for fuel injection. You have to weld fuel injector bungs into the runners, mount the fuel rails, and either get a 4150 style throttle body to go on top or else buy or fab an elbow so you can mount the LT1 style throttle body. Accel used to make an adapter for this setup:
I don't know if they still do or not. I believe Accel was bought out by Holley a while back, you might do a search on Holley's website.
Before anyone tells you a dual plane won't work, the Edelbrock Performer RPM this manifold is based on is good to 6500 rpm. And was advertised by GM as giving a 30 ft/lb torque boost through the midrange of the rpm band and no loss of top end horsepower when compared to the stock LT1 manifold.
It will, but it does require modification for fuel injection. You have to weld fuel injector bungs into the runners, mount the fuel rails, and either get a 4150 style throttle body to go on top or else buy or fab an elbow so you can mount the LT1 style throttle body. Accel used to make an adapter for this setup:
I don't know if they still do or not. I believe Accel was bought out by Holley a while back, you might do a search on Holley's website.
Before anyone tells you a dual plane won't work, the Edelbrock Performer RPM this manifold is based on is good to 6500 rpm. And was advertised by GM as giving a 30 ft/lb torque boost through the midrange of the rpm band and no loss of top end horsepower when compared to the stock LT1 manifold.
Um, weren't you going to put a supercharger on that car? Exactly how is that keeping it looking "stock"?
Maybe it might be better to consider it "bolt on" appearing. Yes, you will see the headers, exhaust, and SC... but I don't want to get into something the car is not or body modifications. I want it to appear to causal observers as a slow C4. It already has the SC and exhaust. I don't want it to lose the flavor of a 96 Corvette LT4. Also would add, I imagine the sound of the cam will give away some clues, but leave people guessing. Which is what I want.
I don't want to have to alter the hood, add flashy wheels, spoilers, racing seats, harnesses, an engine that doesn't look factory, etc.
Am I reading that right, 30 deg negative split on duration? Interesting.
May as well port your LT intake, Ive gotten those anywhere from 350-370 cfm think thats enough?!
That dual plane is a real good carb'd piece for a NA app for sure, it does in fact do better than most any DP out there.
Am I reading that right, 30 deg negative split on duration? Interesting.
Yes, as I mentioned above, LE and I had about a 10 min. conversation after exchanging emails for a few days. He was pretty confident this will be the best for the overall use of my car. Have to say, his name is getting him a nod of confidence from myself. It will absolutely go to the dyno once built so we will see what plays out.
This will not be a 1/4 mile car. I am sure I will take a few passes on it, but it will see parade duty more than it will see the traps at the top of the 1/4 mile. Shows, cruises, parades, and some fun racing.
Originally Posted by cv67
May as well port your LT intake, Ive gotten those anywhere from 350-370 cfm think thats enough?!
Posted above, Port matched LT4 with 58mm TB bores. Opened up, but looks stock Should match the AS&M TB I ordered quite nicely.
Originally Posted by cv67
That dual plane is a real good carb'd piece for a NA app for sure, it does in fact do better than most any DP out there.
It may be, just not the route I am interested in. I don't believe there is space under a C4's hood to mount a TB/air cleaner or an elbow. Not to mention I think it would look rather ugly. Just personal opinion there. If this was a purpose built race car where aesthetics were just an afterthought I might be more interested. I just have a vision of what I want to end up with and going that route just doesn't fit. I wouldn't turn anyone off from it.
Should match the AS&M TB I ordered quite nicely.