Ported TPI vs FIRST

[Faceman89]

Looking for some technical advice. I have a stock 89 Corvette I’m slowly getting back into shape. I know the factory TPI is a major bottleneck for performance. I currently have a factory lower intake ported to 42mm and a ported plenum sitting in my garage. I do plan on eventually having the factory heads worked and a larger cam installed along with headers. I guess my question is, how would a FIRST TPI system work in a factory car? Or should I just get the AS&M runners to compliment my current ported lower intake and plenum?

 

[Grumpy]

yes, I'm all too aware that good performance parts are expensive and yes over time the technology does improve, the FIRST INTAKE is vastly superior to the stock TPI intake and certainly a big step up from the ported TPI, but remember its a combo of parts, and the stock CYLINDER HEADS are also a MAJOR FLOW RESTRICTION TO AIR FLOW RATES, the CAM and headers and exhaust system also contribute,
porting the stock heads and intake in my experience is basically wasted effort and money compared to the FIRST INTAKE AND BETTER HEADS NOW AVAILABLE
to get a huge seat of the pants boost in power that you can't believe , those air flow rates and are required and VERY BENEFICIAL TO YOUR TPI COMBO, (ESPECIALLY with the BETTER HEADS AND FIRST INTAKE)
really you won't believe what swapping to the FIRST INTAKE, a set of 195CC-210CC AFR or BRODIX HEADS will do to wake up the TPI engine, the combo plus decent headers and a mild roller cam , well its generally an easy 100-140 hp PLUS (the parts selected, displacement and compression, MANDATORY LARGER injectors etc. obviously effect results) and
(yes any significantly more performance cam change greatly benefits from a higher stall converter and a change to a 3.54:1-or-3.73:1 rear gear change)

theses video's may interest some guys

what goes in needs to exit with minimal flow restriction, DECENT LONG TUBE HEADERS an (X) pipe and dual 3" exhaust helps power and torque a great deal

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Grumpy, I'm interested in your expertise. I roamed around your site some today, so if this has already been discussed please post a link to the discussion. If you were to pick the best heads and cam combo for a SBC with a ported, stock tuned port setup, what would it be? I realize you can get...

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[Faceman89]

yes I'm all too aware that good performance parts are expensive and yes over time the technology does improve

the FIRST INTAKE is vastly superior to the stock TPI intake and certainly a big step up from the ported TPI, but remember its a combo of parts, and the CYLINDER HEADS are also a MAJOR FLOW RESTRICTION TO AIR FLOW RATES, the CAM and headers and exhaust system also contribute,
porting the stock heads and intake in my experience is basically wasted effort and money compared to the FIRST INTAKE AND BETTER HEADS NOW AVAILABLE
to get a huge seat of the pants boost in power that you can't believe , those air flow rates and are required and VERY BENEFICIALY TOO YOUR TPI COMBO, (ESPECTIALLY with the BETTER HEADS AND FIRST INTAKE)
really you won't believe what swapping to the FIRST INTAKE, a set of 195CC-210CC AFR or BRODIX HEADS will do to wake up the TPI engine, the combo plus decent headers and a mild roller cam , well its generally an easy 100-140 hp PLUS (the parts selected, displacement and compression, MANDATORY LARGER injectors etc. obviously effect results) and
(yes any significantly more performance cam change greatly benefits from a higher stall converter and a change to a 3.54:1-or-3.73:1 rear gear change)

Hello, 91 corvette building a 383

Im building a 383 for my 91 Corvette, looking for info on different combination that will make this a quick street car that may see some track time.

garage.grumpysperformance.com

I appreciate your knowledgeable response. Maybe I will leave the intake alone for now and focus on a set of headers. I have decided I will use the ones from TPIS.