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Originally Posted by Ryan00TJ
(Post 4849326)
Larry will tell you to go with a PSI shortblock. He sells them. It's a better than stock block. Also has a bigger bore. 4.350" vs GM 8.1 @ 4.250". Only real downside is that it has 1/2 x13 main cap bolts and no windage tray provision vs GM8.1. GM main cap studs are 12mm and cannot be used on PSI block.
If wanting to run a windage tray setup in a performance PSI 8.8 block you need ARP main studs and align hone accordingly. |
Originally Posted by techman
(Post 4849323)
Why not just go the entire Raylar route? They are the de-facto experts of modifying 496 platform and you will probably be ahead of the game when it comes to cost. Especially if you want to upgrade HP and maintain stock appearences.
Larry has done great things with the gen7 engines... but I can build a budget shortblock for substantially less by doing it myself. |
Originally Posted by Dragracer_Art
(Post 4849344)
Ive swapped a few emails with Larry at Raylar... and will eventually buy heads/cam/intake from him... but I typically prefer to do my own assembly work and have machine work done locally. It saves me a ton of money and I have my hands on it every step of the way. Been building engines for over 35 years now.
Larry has done great things with the gen7 engines... but I can build a budget shortblock for substantially less by doing it myself. |
Originally Posted by Ryan00TJ
(Post 4849326)
Larry will tell you to go with a PSI shortblock. He sells them. It's a better than stock block. Also has a bigger bore. 4.350" vs GM 8.1 @ 4.250". Only real downside is that it has 1/2 x13 main cap bolts and no windage tray provision vs GM8.1. GM main cap studs are 12mm and cannot be used on PSI block.
If wanting to run a windage tray setup in a performance PSI 8.8 block you need ARP main studs and align hone accordingly. I like to stud everything I build thats not a bone stock application. Ive seen main caps walk around too much on bolted stuff. I will watch ebay for a PSI motor. Seems like that makes the most sense for a rebuildable core. I can scrap the top end and still be ahead of the game by just using the shortblock. |
What will you do for exhaust? A few options out there and all will require some work to get routed out those side exits.
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Originally Posted by Knot 4 Me
(Post 4849349)
What will you do for exhaust? A few options out there and all will require some work to get routed out those side exits.
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FYI Trey at River Speed and Marine is in with PSI and building up the Gen 7 platform. He has PSI blocks and cranks available to sell.
He's in development of the LS platform heads for the Gen 7 that Chevy developed and never brought to production. It would be worth calling him. |
Originally Posted by 87MirageIntruder
(Post 4849361)
FYI Trey at River Speed and Marine is in with PSI and building up the Gen 7 platform. He has PSI blocks and cranks available to sell.
He's in development of the LS platform heads for the Gen 7 that Chevy developed and never brought to production. It would be worth calling him. |
The PSI rotating assembly is a great base. The big question is are you doing the HO600 or the HO525 package?
Somebody post the link/picture of the River Speed and Marine heads. Are they compared to the Raylar stock aluminum heads or the Raylar racing CNC heads? FWIW, the Raylar heads were designed by Reher-Morrison and 10 years ago, I dropped them off at 2 places to port them and everybody knew the story behind them and insisted that the only thing they would do is screw them up. That was 10 years ago but they are pretty decent bang for the buck. |
Mike Head use to be one of RM top cylinder head guys, not sure if he's still there been yrs since Ive been to the shop.
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