I managed to source a 305 TPI motor locally and am about to embark on the rebuild.
I know many of you think (as i once did) why build a 305 instead of a 350 or 383?
Its a simple matter of what is available here in the UK, what parts are available here and in the US.
Doing the research i found the 305 is capable of an easy 370 to 400hp without force feeding it, although i have a very nice Garrett charger under my bench at the moment im resisting using it on the Astro build.
I couldnt afford to go the LS route either, expensive to buy and more so to build, yes its lighter, yes more HP out of the box...but HOW F****G MUCH????? so thats out of the question
Firstly i needed proper sequential injection which the TPI can give me, it can be modified to run LPG with consummate ease which is very important when you consider our gas prices here.
Secondly i wanted external injectors so i could bin the uber SHITE spider.
Must be older style to mate to my R700 or 4L60E gearbox.
So with the engine bought (very cheap) and only covered 70K miles, she is stripped and off for crack testing and machine work, decking, bearings and line boreing.
I am ordering a set of Trick Flow super 23 175 ally heads from Summit racing, a Comp Cams XM280HR with 0.495/0.502 lift split, a 218/224 duration split and a 112-degree lobe separation angle, usual ARP bolts, Pro Comp roller 1.5 rockers etc.
Im not bothered by Cubic Inches and the search for ultimate power, anything that gives me above 350 usable HP will suit the UK roads well enough, if i go much higher the LPG system will need completely re designing, and i aint gonna do that!!!
I have eventually given up on trying to fix the POS V6 and its constant miss-fire, time to sell it and get some of my money back.
The only thing that isnt 100% clear is if i should stick with the 4L60 or drop in a R700 to dump the electronics.
I know many of you think (as i once did) why build a 305 instead of a 350 or 383?
Its a simple matter of what is available here in the UK, what parts are available here and in the US.
Doing the research i found the 305 is capable of an easy 370 to 400hp without force feeding it, although i have a very nice Garrett charger under my bench at the moment im resisting using it on the Astro build.
I couldnt afford to go the LS route either, expensive to buy and more so to build, yes its lighter, yes more HP out of the box...but HOW F****G MUCH????? so thats out of the question
Firstly i needed proper sequential injection which the TPI can give me, it can be modified to run LPG with consummate ease which is very important when you consider our gas prices here.
Secondly i wanted external injectors so i could bin the uber SHITE spider.
Must be older style to mate to my R700 or 4L60E gearbox.
So with the engine bought (very cheap) and only covered 70K miles, she is stripped and off for crack testing and machine work, decking, bearings and line boreing.
I am ordering a set of Trick Flow super 23 175 ally heads from Summit racing, a Comp Cams XM280HR with 0.495/0.502 lift split, a 218/224 duration split and a 112-degree lobe separation angle, usual ARP bolts, Pro Comp roller 1.5 rockers etc.
Im not bothered by Cubic Inches and the search for ultimate power, anything that gives me above 350 usable HP will suit the UK roads well enough, if i go much higher the LPG system will need completely re designing, and i aint gonna do that!!!
I have eventually given up on trying to fix the POS V6 and its constant miss-fire, time to sell it and get some of my money back.
The only thing that isnt 100% clear is if i should stick with the 4L60 or drop in a R700 to dump the electronics.