Cam and head selection???
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Car: 06 Trailblazer SS
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Cam and head selection???
I want to change my 305 to a ZZ4. I need advise on heads and cam. Emissions is a factor. Car is just for fun but will see some track if I am feeling frogy. Would like to see some mid to high 12s.
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
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Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
That T-5 isn't going to handle 12 sec timeslips out of a TPI 350. The 4.10 gears, in my opinion, are too big for a TPI motor. It'll run out of steam by the end of the quarter. Go with something between 3.23-3.73.
Get some aluminum L98 heads and a cam with duration around 210/220 (give or take a few degrees) with lift in the .480s-.510s.
Or get a nice set of Pro Toplines. I know someone on these boards is selling a set at a really nice price Then stick in a 218/224 cam or something around there (CompCams XE268 would be nice)
Get some aluminum L98 heads and a cam with duration around 210/220 (give or take a few degrees) with lift in the .480s-.510s.
Or get a nice set of Pro Toplines. I know someone on these boards is selling a set at a really nice price Then stick in a 218/224 cam or something around there (CompCams XE268 would be nice)
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Originally posted by DuronClocker
That T-5 isn't going to handle 12 sec timeslips out of a TPI 350.
That T-5 isn't going to handle 12 sec timeslips out of a TPI 350.
-- Joe
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Cam and head selection???
Originally posted by 92heritageRS
I want to change my 305 to a ZZ4. I need advise on heads and cam. Emissions is a factor. Car is just for fun but will see some track if I am feeling frogy. Would like to see some mid to high 12s.
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
I want to change my 305 to a ZZ4. I need advise on heads and cam. Emissions is a factor. Car is just for fun but will see some track if I am feeling frogy. Would like to see some mid to high 12s.
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
The L98 head is not a terrible head, but unless you got a set for around 300 bucks i'd pass. for 1100-1200 you can have a set of really nice heads.
Stay far far far away from pro-toplines. The Alum versions have an oddball intake port which doesn't mate to any intake on the market. It requires extensive work.
Also, it requires special head bolts to clear some of the springs.
Thats why they are $500.00 NEW on ebay every day of the week.
-- Joe
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Car: 1997 Corvette
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Axle/Gears: 2.73 IRS
Originally posted by anesthes
And why not?
-- Joe
And why not?
-- Joe
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Originally posted by DuronClocker
I would think a dead-stock T-5 would get blown apart with the torque that a 12-sec TPI 350 motor would be putting down.
I would think a dead-stock T-5 would get blown apart with the torque that a 12-sec TPI 350 motor would be putting down.
Pro toplines: https://www.thirdgen.org/techbb2/sho...ro+AND+topline
-- Joe
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I want to change my 305 to a ZZ4. I need advise on heads and cam.
sorry I don't have advice for you, 92. But if people do stay on topic I would surely like to read what they say about heads and cam.
Are you planning to stick with TPI, or one of the other efi setups?
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Car: 2009 Pontiac G8 GXP
Engine: LS3
Transmission: 6L80E
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anesthes:
I think your comments and the other thread applies to the 200cc heads or below.
I own a set of the 220cc aluminum heads and the intake port fits a 1206 gasket really well.
I know that there is one or two other members on this site with the 220cc aluminum heads that haven't had issues...
I personally think it sucks that someone would design an intake port that can't fit to a 1204 or 1205 gasket with a 190-200cc head...
As for the T-5...shift it right and it can handle some power...the key is skill, not the trans...to a reasonable power level anyway...
I think your comments and the other thread applies to the 200cc heads or below.
I own a set of the 220cc aluminum heads and the intake port fits a 1206 gasket really well.
I know that there is one or two other members on this site with the 220cc aluminum heads that haven't had issues...
I personally think it sucks that someone would design an intake port that can't fit to a 1204 or 1205 gasket with a 190-200cc head...
As for the T-5...shift it right and it can handle some power...the key is skill, not the trans...to a reasonable power level anyway...
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Originally posted by 88TPI406GTA
anesthes:
I think your comments and the other thread applies to the 200cc heads or below.
I own a set of the 220cc aluminum heads and the intake port fits a 1206 gasket really well.
I know that there is one or two other members on this site with the 220cc aluminum heads that haven't had issues...
I personally think it sucks that someone would design an intake port that can't fit to a 1204 or 1205 gasket with a 190-200cc head...
anesthes:
I think your comments and the other thread applies to the 200cc heads or below.
I own a set of the 220cc aluminum heads and the intake port fits a 1206 gasket really well.
I know that there is one or two other members on this site with the 220cc aluminum heads that haven't had issues...
I personally think it sucks that someone would design an intake port that can't fit to a 1204 or 1205 gasket with a 190-200cc head...
People say "yah $500 bux for a pair cool" but if you look at the flow numbers, they flow less than a Sportsman-II out of the box. Then you need to spend HOURs porting an intake to match the oddball ports of the heads (if you look in the thread).
B4CTOM had numerous issues from head bolts hitting springs, to pushrod hole issues.. Oh they also require .100 longer pushrods.
-- Joe
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Cam and head selection???
Originally posted by 92heritageRS
I want to change my 305 to a ZZ4. I need advise on heads and cam. Emissions is a factor. Car is just for fun but will see some track if I am feeling frogy. Would like to see some mid to high 12s.
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
I want to change my 305 to a ZZ4. I need advise on heads and cam. Emissions is a factor. Car is just for fun but will see some track if I am feeling frogy. Would like to see some mid to high 12s.
car will have SD TPI T-5 and 3.73 or 4.10 gears. Thanks for the help!
Flat top pistons
AFR heads, milled, block decked, .045
quench and a target C/R of 10:1
The TPI will never rev, so I'd go around
224/230 - 224/232 duration on around
.510/.540 .. 112lsa / 108center
Then tinker with timing and see where you go.. Hog out the TPI setup to a 1205 intake gasket.
-- Joe
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Car: 06 Trailblazer SS
Engine: 6.0 LS2
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Thanx anesthes. So I think will start with
ZZ4 short block
AFR 195cc
port the p!ss out of my TPI base and plenum
SLP runners
http://www.summitracing.com/ comp cams PN# CCA-08-502-8
or CCA-08-305-8
What do you guys think?
And for the T-5 http://www.g-forcetransmissions.com/tran_gt-5.asp is an option if it comes down to it!
ZZ4 short block
AFR 195cc
port the p!ss out of my TPI base and plenum
SLP runners
http://www.summitracing.com/ comp cams PN# CCA-08-502-8
or CCA-08-305-8
What do you guys think?
And for the T-5 http://www.g-forcetransmissions.com/tran_gt-5.asp is an option if it comes down to it!
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Yeah, I agree about the smaller port Pro Topline heads with the standard port.
I wonder if the Topline Vortec castings suffer from any of the same problems?
Also, I thought that the stock TPI base couldn't be ported to match a 1205 gasket...do you mean an aftermarket base?
I wonder if the Topline Vortec castings suffer from any of the same problems?
Also, I thought that the stock TPI base couldn't be ported to match a 1205 gasket...do you mean an aftermarket base?
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Car: '87 IROCZ
Engine: 395 ZZ4
Transmission: ProBuilt 700R4
Axle/Gears: 9 bolt 3.70s
Good start,
I was wondering if the AFR 195cc heads are emissions legal? I dont think that they have EGR provisions.
Maybe the 195cc Trick Flow heads from Summit Racing have EGR stuff. And save about $400 over the AFRs.
The ZZ4 is a great beginning, stick with that block. You can use a stud kit for the main caps and get a bit more reliability.
Yes, you will have to port the $$$$ out of the stock base manifold or buy the Accel base and slightly port that one.
The cam???? I would go with a 224/230 with about .525" lift,,, Comp Cams has a cam close to these specs.
To go 12s you will need great flow, the runners are going to hurt unless you get the large tube runners and match port the plenum to the runners. For that matter, you should match port everything!!!
Anyway, thats my 2 cents worth.
I was wondering if the AFR 195cc heads are emissions legal? I dont think that they have EGR provisions.
Maybe the 195cc Trick Flow heads from Summit Racing have EGR stuff. And save about $400 over the AFRs.
The ZZ4 is a great beginning, stick with that block. You can use a stud kit for the main caps and get a bit more reliability.
Yes, you will have to port the $$$$ out of the stock base manifold or buy the Accel base and slightly port that one.
The cam???? I would go with a 224/230 with about .525" lift,,, Comp Cams has a cam close to these specs.
To go 12s you will need great flow, the runners are going to hurt unless you get the large tube runners and match port the plenum to the runners. For that matter, you should match port everything!!!
Anyway, thats my 2 cents worth.
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Car: 1989 GTA Nighthawk
Engine: 389 CID TPI
Transmission: TCI 700R4
Axle/Gears: 9 bolt 3.23
If you are going to spend all that money then get a new base for it and if you have the money get a SuperRam.
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
just to add......I would get the edlebrock runners instead of SLP ....they are bigger...and look to me you can open them up alot more than the SLP units
good luck on your ride man !
good luck on your ride man !
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Originally posted by D's89IROCZ
just to add......I would get the edlebrock runners instead of SLP ....they are bigger...and look to me you can open them up alot more than the SLP units
good luck on your ride man !
just to add......I would get the edlebrock runners instead of SLP ....they are bigger...and look to me you can open them up alot more than the SLP units
good luck on your ride man !
A 2.8l remote EGR can be added to the HSR or victor.
-- Joe
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Car: '88 Formula, '94 Corvette, '95 Bird
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Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Originally posted by D's89IROCZ
reallly . I never new that ....heck I should read that stuff more closely ......maybe a swap is in my future
reallly . I never new that ....heck I should read that stuff more closely ......maybe a swap is in my future
If you got a TIG or a high amp mig your all set. If not, mock it up, and have it welded for 30 bux.
-- Joe
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