I want to get into mid 13's with bolt ons with my 1987 Iroc-z, but eventually I will add to the TPI. This will be my shopping list:Edelbrock base intake, AS&M runners, TPIS ported plenum and 52mm throttle body. What do you guys think?

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1999 Camaro SS LS1 m6
1987 Iroc-Z 5.7 TPI
1984 Camaro

 

that will only get you into mid 14s

 

more like low 14s. But still, that is an unbalanced list of mods. Too much on the intake side, not enough on the exhaust side. Forget about the throttle body, the stock one flows plenty. Put that money toward a catback and headers.



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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

Built on Wednesday

 

I already run 14.3@94mph with 2.0 60ft. I have 3.72 gears and hypertech chip (thermomaster) 160 thermostat and fan switch, and replaced catalysts with oem unit and adjustable Borla cat-back, gutted air box. Iroc-z is a L98 350 TPI not a 305 TPI.
Thanks guys

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1999 Camaro SS LS1 m6
1987 Iroc-Z 5.7 TPI
1984 Camaro

 

I ran a 14.2@98 with just a full exhaust

 

14.2 @98 is pretty quick for just an exhaust! I assume you mean headers also? What year and make? I don't think the 3.72 gears helped very much, actually may have hinderred the performance because I tach out in 3rd just before the traps.

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1999 Camaro SS LS1 m6
1987 Iroc-Z 5.7 TPI
1984 Camaro