Since I am on a tight budget, and know barely anything about performance matching (I know how to install everything, this is just my first muscle engine build up), I was considering the LT4 Hot Cam and the World Products SB-Chevy Sportsman-II Heads. Will this work with the 1989 350 TPI intake base? What else do I need (keep in mind my budget) to make some decent power out of the cam/head combo? Any help would be much appreciated. Thanks.

 

i'm no tpi expert by any means, or expert at anything for that matter, but i believe the stock base and runners can be improved on a great deal with aftermarket parts. i'll move this to the tpi board hoping you'll get more help there.

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ICON Motorsports
1st & 3rd

 

Tom Keliher and I both have the same heads and cam as you are looking at. Tom's car has a slipping trans. and runs low 13s, 12s are very possible, I have a completely new engine, only had 150 miles on it when I ran it, with no posi and 2:73 gears, no tuning at all and a 2.42 60' time, I ran a 13.6 , I am positive that with tuning, I still have the stock 305 chip too, mine will be running 12s also. Many people will tell you that the combo won't work, but I know first hand it does. I have an Edelbrock base, but the plenum and runners are stock. If you got with the setup, try to pick up an aftermarket intake base at minimum, the -all stock- TPI will choke the engine and won't give you maximum performance.

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1991 Camaro ,polished TPI, 355ci. Sportsman 11 heads, LT-4 Hot cam,Pete Jackson gear drive, on,and on, and on... 13.6 @ 102.5 with a 2:73 open rear, no traction, no tuning, no practice. Car is pictured in Chevy High Performance magazine, June 2000 issue.

1985 California Edition IROC red, polished TPI and polished wheels, otherwise completely stock 305ci. 700r4

1991 fullsize Blazer 4-wheel drive, 350,700r4, Pro Comp lift, K&N, TBI spacer, 3" Catco cat, 3" cat back Flowmaster, etc....

 

One more factor on my times, I hit the brakes just before the traps, not knowing it at the time, but everyone watching noticed and I do have it on video. 12s are very possible...

http://sc3gfb.org/members/jason.html

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1991 Camaro ,polished TPI, 355ci. Sportsman 11 heads, LT-4 Hot cam,Pete Jackson gear drive, on,and on, and on... 13.6 @ 102.5 with a 2:73 open rear, no traction, no tuning, no practice. Car is pictured in Chevy High Performance magazine, June 2000 issue.

1985 California Edition IROC red, polished TPI and polished wheels, otherwise completely stock 305ci. 700r4

1991 fullsize Blazer 4-wheel drive, 350,700r4, Pro Comp lift, K&N, TBI spacer, 3" Catco cat, 3" cat back Flowmaster, etc....

 

Thanks for the info. How is the idle on your car? Did you get new rockers and lifters too? How can you use the stock ECM, the computer doesn't detect any sort of problem? Thanks.

 

Try carparts.com or performancepartsonsale.com for the best price on a edelbrock base. You NEED to get one. You can find them used if you look hard enough for $250-300. The sportsman heads are a good one, especially for the price.

Also, port out your stock plenum and your next mod should be headers/catback after the engine is back in.



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87 IROC-Z, 5.7, auto, 3.27, leather, !cat, Holley fpr, K&N'S, SLP 1-3/4" Jet-Hot coated headers, SLP .218/.224 .495/.502 cam, Comp 1.5 roller tip rockers, $uperPITAram, Edelbrock lower intake, Holley 52mm tb, Dynomax\Flowmaster catback. Coming Soon(?)- Fasttrack/Accell DFI

1989 Pontiac 20th Anniversary Turbo Trans Am - 161,000 miles, !cat, 9" K&N

 

The idle is very good, it sounds like something under the hood, other than just a loud exhaust. For any info you need on my engine, go to http://sc3gfb.org/members/jason.html

I have listed most of the engine mods. I have since swapped the SVO 24lb injectors for GM 24lb. injectors. The SVOs were a little much for me considering the stock chip. I have a DFI for the car, I just need to take the time to install it and learn the tuning it takes....

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1991 Camaro ,polished TPI, 355ci. Sportsman 11 heads, LT-4 Hot cam,Pete Jackson gear drive, on,and on, and on... 13.6 @ 102.5 with a 2:73 open rear, no traction, no tuning, no practice. Car is pictured in Chevy High Performance magazine, June 2000 issue.

1985 California Edition IROC red, polished TPI and polished wheels, otherwise completely stock 305ci. 700r4

1991 fullsize Blazer 4-wheel drive, 350,700r4, Pro Comp lift, K&N, TBI spacer, 3" Catco cat, 3" cat back Flowmaster, etc....

 

would that set up work for a 1985 irocz camaro or would i need to reprogram the ecm or the prom or which of them if nessesary. my engin is stock except for the exhaust it is borla with 3" pipes

 

Where can I get a good deal on an intake base? Or, should I just get me stock one ported? Thanks.

 

Also, do I have to have these World Heads ported, or will the be ok with the LT4 hot cam already? Thanks.

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1984 Camaro Sport Coupe - 73K Miles
5.0 Carbed LG4
COMPLETELY stock except for a K&N Air Filter
F41 Suspension Package
700R4 Tranny
3.08 Rear End
New Paint
Best 1/4 Mile Run:
16.760 @ 80.74 MPH

Coming Soon:
350 TPI
Complete 3" Exhaust System
Aluminum Drive Shaft
3.27 Disc Brake Posi Rear

 

One last thing, will the valve springs the assembled heads come with be ok for this cam? Thanks.

 

As long as you aren't in a hurry, get one from carparts.com or performancepartsonsale.com...I think they sell them for around $320



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87 IROC-Z, 5.7, auto, 3.27, leather, !cat, Holley fpr, K&N'S, SLP 1-3/4" Jet-Hot coated headers, SLP .218/.224 .495/.502 cam, Comp 1.5 roller tip rockers, $uperPITAram, Edelbrock lower intake, Holley 52mm tb, Dynomax\Flowmaster catback. Coming Soon(?)- Fasttrack/Accell DFI

1989 Pontiac 20th Anniversary Turbo Trans Am - 161,000 miles, !cat, 9" K&N