ported out tpi open headers lt4 hotcam

[@shawnspencer5694]

Sounds great I like when you here the horses galloping

[@vctr3394]

It sounds nice, but I definitely have questions, your project was that good man seriously Good job

[@candocannabis]

the 305 heads raise compression. I put bigger valves in the heads

[@MasterWitchDoctor]

that doesnt always make more hp.

[@trainsbangsandautomobiles824]

Ive heard from builders that engine dyno'd 305 heads WITH larger valves on 350's and while it up'd the comp alot, power was about the same due to the very restrictive ports

[@candocannabis]

I ported the s#(! out of them.

[@danboudreau4699]

Now that sounds nice

[@CedJones1984]

I want mine to sound as good

[@brockkellenberger]

Sounds good! Why 305 heads?

[@sportsmansparadice42]

I would assume higher compression. Combustion chamber size are smaller than 350ci heads in general.

[@bengarcia2074]

sounds great. Question, I also have a 305 tpi stock but how high can I go without having to make block ajustments and or little adjustment; when camming how do I go about this. I'm a young fun willing to learn.

[@Mr.Vazquez]

Want to do this to my 91 c4 corvette, what's the specs of the engine build ecu/prom or standalone ecu and trans specs 700r4 etc. plz

[@stephenjray1988]

Who does your tunning or was it tuned at the time?

[@davidoutdoors74]

did you have to upgrade the chip

[@mxlman26]

Did you got an aftermarket ECU ot was it tunned???.... what about the performance??

[@MasterWitchDoctor]

mxlman26 what performance?

[@Mr.Vazquez]

Did you have to tune/ reprom? I have a 91 c4 L98 tpi I'm working on this seems perfect, did you have to run bigger Injectors etc.?

[@candocannabis]

I did have a pc tune and I did have bigger injectors

[@UCFCamaroSS]

Who did your tuning? Its dialed in good!!

[@georgesantiago6005]

Need more gas pressure.

[@XscoutsniperX]

Who did your tuning?

[@candocannabis]

www.scotthansen.net/index.html

[@MasterWitchDoctor]

305 heads? DUDE WTF IS WRONG WITH YOU? 305 heads have tiny ports and they have ZERO room for putting larger valves in. 1.94 is the largest intake valve you can use and if you go that route you are stuck with a stock 1.5 inch exhaust. Further machining with weaken or break the bridge between the valves and you wont have clearance between them and the valves will contact each other. The combustion chamber sucks (its an EPA friendly design for emissions). Do yourself a favor and get a set of casting #113 aluminum corvette heads. They have 58cc chambers like those 305 heads but the ports (170cc intake/ 78cc exhaust) out flow those 305 heads by over 50 CFM. Porting that TPI intake makes roughly about 8 hp vs a stock one and the SLP Siamese runners actually lose hp. These are videos on here with a guy in Arizona that flow benched a stock and ported TPI intake and it gained almost ZERO cfm. Do yourself a favor and scrap the heads in lue of Corvette aluminum heads and that TPI intake in lue of a TPIs Miniram. In all honesty I doubt that set up makes 300 hp. Ive built too many of these engines to know otherwise and if you disagree then you really dont have any idea of what youre doing because you have mixed matched pieces and parts.

[@candocannabis]

you are correct about the 113 heads.

[@MasterWitchDoctor]

geezus my Corvette would run off and leave you so bad its not even funny.