i recently purchased a 89 Trans Am with the TBI 305/700r4 (blah) 2 weeks later i purchased an 91 L05 oilpan to pistons. it has been rebuilt with stock roller setup bt rebuilt with high-compression pistons, walls are smooth as butter. 2 days ago i purchased a set of completely reworked and ported '72 #882 heads rods springs etc from my buddy(off his 406stroker) also i purchased an Torker 2 singleplane, 670 HollyStreetAvenger rebuilt w spring kit. I plan on changing the stock .38- roller with flat-tappet comp .488 .488 (all from 406) i am mainly wondering how much overall power HP/TQ im looking at with the .488 flat setup and compared to saving time and trouble and just putting the top components on it with the stock roller .38- setup. Also what would the stock roller setup with my components make if i decide keep it roller? Thanks

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Milk toast and gritts with the before lunch runs. great scrap metal truck engine ...


Javier

 

Sounds like a poor combination to me. 882 heads are junk heads, and that cam is probably a low lift flat tappet cam. neither of those is doing that motor any favors. Plus, a single plane intake is all wrong for those heads, that cam and that little carb. You really need to do some homework to understand what types of parts will work best together.

 

Y do you thirnk i made this thread?

 

Would you explain to me exactly why that wouldn't be a good combination, why dualplane would be better, cam is .292 duration, 670 wouldnt be bigenuf?